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 0x3694e8b06acfde7c24349afc7f40822f6847761dcc77e76b0772f164331c1793. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/268159d1-8088-4bb3-aa74-f2c46fdc04bd.json and https://artists.proofprofile.net/proofs/artist/268159d1-8088-4bb3-aa74-f2c46fdc04bd.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 0x46d673ad0b3d9fda186bd1352f3bf44c5100265473201a1130a6d91d04ff419b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUBKF2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e03be1df01851c910ff89ce273d2db578e31293994271a44c8552372c40c17. 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/AUMEV2258394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963c0b914854753dd9680ea03f69f0185602e7237668e8498e0e93d7df26ebf2. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QM6N22283597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35da01783780e80f2e6d985a6e5589f277173af22ca1c2c05b8294985d2c2856. 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/NLAM42200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4935c253173a51ccb85989876aa34df59ec77f5df8c515830b036ba7ff0e8663. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6P42221128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc309d3ac596adb88144753b8eafe27c56435df2b3b2a4a9a71db3399119139b. 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/AUGBT2227827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebcb1ae62c7c7367b613309795aa85bf1d1f55ce9ab43df0b5271b329e586e1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2317779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff50a7d0a2e2056335039bc6e91f94018d23289e1b03021b9914a37e72c5995d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZES72397494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fad278608004287cd133f89a7b3fe127ca6b732dc3f9c8c1c33f0b766449f5. 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/QZES72397495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3932505dc86013acdb5be8f1399868d250266a3dd8805aa64587da018f9ceb6a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZQAY2355387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9ea8283f508eb23241120ddeaa356b9f4e44b5e1ad9902dd2626c72f4e2ebe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2339261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56154a2c694980d15d70882ef4f066ffa70ca3c33f4e658fc13025e8d1836795. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6P2303083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499c2e12105ef21956e8231900c313779bc21f1b96c2712ecd55150edb37f695. 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/AUMEV2344674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7610df09547dc0592677d57fbd1e8eea5cba57c6c2834aaa6866d573b9d16c3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:15:37Z), 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/NL4WT2300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da87e4153df0a09da626c5f152d3306b1e94aaedc79daf7c7742f629b0da09f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:34:39Z), 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/NL4WT2300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c6c99fd5938c48ddf169893c355ad8e582076da46090bc4ca26db2edc3e49e. 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/QZWFG2359029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d4cb81c8c19570a66915e7e139eb806d24b3bfe1078ab48aea528e569ebeae. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFH2326762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e2e1c8160ead984897d5c7e78e955636c2ac340af98da0e28ad8e7e8e8df5f. 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/AUGBT2346497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1dc36a72ef83752b5096f2be1e17055f8beb125c50d34fa136d165224e2b55. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZWFH2326639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a496f59a962c983a1e4c8014fa22c0f76f0ea5ae75129a67253c6885525b30. 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/QZDA42462663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b7379f0cff4c5e5c7840aa7c53928ed8f32e85f728abdf5cbf4f388f754431. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUGBT2338205.
The Never Ending Search For Love - Strings Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e210054f03ad9c4ae4c225610928ca76b9cb3001ef2327f60b5fbc02e31f339. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZDA42462665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab99ec1cae654a31161bdc68e45ae4d96ab3bd968a3a19d36a4a1ce86486ab38. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZDA42462688.
Will You Grant Me Our Last Dance - Strings Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065e35a41b09c2628197af24b580950e90ae221fea550ce4dda793c7953a9f88. 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/QZDA42464507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f26c24e68d2a5d733ddae3b4188a1fb49579ea95feaac3b9ddd7ee97d29db0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US3DF2488425.
It's Beginning to Look a Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfb57e7f1ac662c73cf54cdfe4fb714d4f438f1f0a61196b43073a13075fd0d. 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/QZWFS2418674.
It's Beginning to Look a Lot Like Christmas - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfb57e7f1ac662c73cf54cdfe4fb714d4f438f1f0a61196b43073a13075fd0d. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:58:47Z), 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/QZWFS2418674.
Rockin' Around The Christmas Tree - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2057709abe780e17d72f185621ba000ba84934de81b6c0b0acee931238acbc2. 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/AUGBT2467209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a13b9a3834a96d4b8dc6e9a3b3f65a5d08ee0b4e2345f594f92b51ee4ebb40. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/UKZGC2403319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc8ac88fd468ed1874571b49a9a5ee9b835100e9ad73e8c7980ddbaf79c9a87. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UY07M2500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742fffee8a0231b7f5644b937314dabab9707640c6fb3112d52978a5b6bc1c1e. 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/QMFMF2501908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9160492f4f5f1b3d90e166bd567e2605a6d7f838cd17cbad8346bf1bf9a8ef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5FN2335527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd507dd6de5e3535b8ebacdd260f9551e492e01164aea5f3043268ba217bd799b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUGBT2228839.