1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a25da4d7a07e264c7f9c552128eaced264450605fa72dfc346155279d1e614. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e144ea6e-d060-4d46-884e-80f233c29930.json and https://artists.proofprofile.net/proofs/artist/e144ea6e-d060-4d46-884e-80f233c29930.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f4bbe8db2926f8bf9b185c4c3209d78c0eb9fe44e70627bc79fddce1d147a9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA81865793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3430e9e8dd40a1d61af24347353195c5eb3457408bf8d3d691605173d5d1e56. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:52:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA81865794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78f0dbf0a783f8601b21c2f430b7e6282ac7be24f8088a84c2f9d189302528a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA81865795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f007a8c970b1d434705a620905705ca1da29c28761e064a8ae0271c14b50bf. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA81865796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb2e1bae20d91f89aea4a38512fc76156712c8756d21069ac76084e6d6c3bce. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA81865797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82c69b694afffb15ed8d49a048cd7e2506ff7879ac0387ed8c1f36604647019. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA81864468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7a6fe166c9e09dadb4c72cd19985c1bb9a227c3a6bb0566f11e4baa448ac99. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA81864469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f4a7a152fa4c539b8ecc9cbc0ecefefc940f9c2463f99bbbb6f91622c904a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681610105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1e61ddcfa07b850dc500cbe6d86898b665a0bfecc33ef8c0806f7a0b04c1c0. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681610106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a4a46e38884d91c329145d213c4f47568b8f00439c331c26d08cf745e84ce4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681610107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c645087ce68f2d90dcac985492aa42b17751a10cfb7ccbe9228237b940c313. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681610108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc354adc6cc8e5250c832ec2cff60ef568bc410c25c6614e975bfcb334b3f8669. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681820001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae98110e3aab75299e25eabd85477d87fbfadb48813ddf096c22d1bb2fb9293. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681820002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b5c9c558f1a07eb21ac33be980e6af1357250fce7eb6d874fc5bd71fc3bb9f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681820003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fa241b29d7e9ea4a27f901aa3840196f82a984a3fdef86de36cab602f3e24a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681820004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8699f20868e2500bd297aa5c0685427d48020d27335532d3870db4fcf5ea0320. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681820005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7869662a014c15987f14776e07cf43cb20851edb97055476e3f2d6809d624ea9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681820007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1383b70e4fc80fc136ee00e5c5d5f9109d9cca66fa85c164e78e0478e7616e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681820008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa038d427a8a6af88b25baa1782b61ebd2b46fdc178fde7adeb6a3ad2e4beef4a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:24:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USN681820010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68409368ea945374c970484f366a44a0842f8418e1863dd7f58f62fb5187405. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA61995776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477bd206ebbebdf8c71e0ed5e28db8d6b92a5ed5cbc6a9381ed98703b9dcad8e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:56:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82035175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9388210621f7e053ff69d23ed8805fee8495c6a7fedf73634298db233d9dc0cc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDBY2001195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed32f50aeb5c6dd20eb8915f687ec188395de1f25e1188a37d7723f8b5df3c48. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDBY2001198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526481729e6e66a7f2a9f81ee8da935fa927211bcc5944ca54e5481862bcd230. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:31:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDBY2001199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d336f25e28b1c12b17f57c6555641823ffc0a4bd85b23fb2eb7c157b22a90f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDBY2001200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b8b9e732e0c7080da5f19930247983e07ce47160f5b153109d2dbd33014be7. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2154014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47495c3bdf68b063ac39eac672ff507299f5d48d41f95982ecc292fe4ff4ceb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52298232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046d6ef370ab824894e76b15822fba504e53d0f99dcaa0df16310dd31d64352. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2267811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35f80d66cb7f4b16c9662809cff2ce41c33b52a5c03ec1aa38e894ed9cf5011. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2224743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea148cb1f9532db9a5ed547c7cd1e6a2010f9f224072292b8cb94191a2596672. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:54:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2222418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b45e332b43c71619cd9115edb6fe67f52b74edf5bd720af908fb24fdef4dad. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2224744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb962fb44bba1b95f842ef1049d3e12e8653c033cfdc5977e5d0f46e5c9432d2d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2222433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3adc6099ed5ef8a663172f83bc18e558d077c2ddbcc259659123984f607add3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2224745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18693ef6899c7cd3c297c8e25386887a8aecf44e48941256b6b3bc4904a696d1. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:17:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2224746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c5f19c10d03058cf9accd6871857851ab6d01063b6bdbbd95e33950902d2de. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2224748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429db058dd78fa4235847824af7165cb0c5fcd09a35f356e8d60a7255e75699c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52359907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbadd06bf515e636f3cf565e0b275845e8c0ca4646bd8caadfc61dc325db648f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52359908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbc0ee1d393aeb8f3c0716ea24eeba15bb326efdb0e817e6be3cd44a5736108. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN42384045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18093ba99ffb1ca7284e3bf9b71f78e501a9f88f4667b1ea0fa198633683f6e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN42384047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eacedc40dbd5221eecf18084d92425586e515bd29e49b22e00d2cde0eb6665. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2360322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d15b2ed6c5818f7e67493a6d039cd1e474980cf9fc7f48488a476974a775aa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2370427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecc117296492555e8aa125c74aeef3bb1e3e96dd799e15b19ea8feca27f3a81. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2370430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4605b0c9fc1849c15f1b0f1434b6b599e755a57fa23b45b883f32e2464c03c0c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2370431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033255b9d098764f6dcbe9ed6aad19d2fe02ed68cbed3be462c209846f937616. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2370432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37537068ee682c3ab363621b36d282517e990e2c9730868b0f3fc4a147c7f77d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626d26bd54e5e8bff7ab7e1dd57138e29ecb251bc8670c7b9de7a4eec17a09c7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835013b40f165eae8b42dfd6b5c2692e364e371d13f50f434c4e30aeb8bfc4c6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c37922fcd4015bd3268a39a974fab38cdf6e9cbd8d134b6d7feb3ff6a4e2106. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6a84dfec1a0140533db07d204aef3c90a0d67958d5f43ab97877dbceb28377. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:25:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd82fb87b3e2d6051a846feafe8a41ae98b92f3bb474c4a9874b051aea3b7857. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26f59c479c9f312b8c4eac32a0920b0e80c6ac3305f1069ceaacf957bcb41ff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc183f747164b64c6df0436564ef4c64fea2e1cd68f8331f395153585f4088caa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fccd9f8d981b620778441540d7aa1bcb71c9cc55a7438b3cf99f890a62be9c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42481615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6ef35be17d6a975409ec0363066ddb9529af2e867bd2e09683f17203d15aed. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWZ2459630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7163e1fc296b2a19ee7ade8b18fb87a5eba51fa57655200900487a7feb727a69. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282495341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5eccf5ed6784dbb87484b72080a56dff4cf5d1a9640c38d1cf5db5747a0bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7281945951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657a188d2e121c4b3a8d0d98791651670a780b35643185a8171540054f2fcba9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2249195.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch