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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0a42984b10b772d61ba64bbfb2507b5f32ac4331158ee9915c2c763849c09. 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/ff542739-3183-4601-88aa-3710b7cb0135.json and https://artists.proofprofile.net/proofs/artist/ff542739-3183-4601-88aa-3710b7cb0135.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b929dac27c8dd2dba9b7e8f7e8ec6f2067789c6fe7b6997db4108c820eb074. 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/QZNWV2148304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7002e521ad349712eea0a93f4631a25855662c33b75a6ae97b080c5935434da3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZNWV2191482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eaf048d0c8bef62254eb5115ea60c5a95ebd61cc52d5fa86b927438f2ea675. 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/QZNWV2191483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ee366e8085e53bc13bd963c228f8aa49a6cfe52c82403b60506cc6cd0a2819. 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/QZNWV2148308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c574bd238878808d262ee4f1f9c4e1ac9936b3939086b1dd3f80b7dace51ce. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZES62312517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4792800a3b8aff6acb933567935d12574ccdc9f7896d9330ac6b872ab04553a. 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/QZES62312518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7a63b49443ae5d22b08cf817d727947a899a65707464808b72320bc1ca44d6. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZK6Q2392878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1179cda2fa58334905e6e28c9ae0a9b0106f6ff9a27faa3edcfa2ff9235067d8. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZK6Q2392879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35957be9fbf33fa634262c1abcf1f251134df9992214ad0720a5277bb3cda87e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZK6Q2392881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7ff27ebf6cbeee52bddc8f81021bbb60ff39983fb4ce89f048900813cfdc58. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/QZWFW2408914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efdc3e1757a196276a9acefb36725157f1a0a895a37b5addb697517514032c2. 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/QZWFW2408916.
Bob the Habit Builder - Rocket Skates Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0699642e4290e1a990064011386ca22de3141da0ecab1313aeb835131499f5. 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/QZWFW2408917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77fa3adf42506aae3d82be600949e9d18fe3a252646a1875cbdb25c0f50bb7b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFW2408918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0a3e674354b6a2ef63582c8592b25d53999740ee4ab61bc6ea439d9ef4d441. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFW2408919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d953872eae6bfbfcfd7944546f3a1fa605a750746d596926529e35313110c8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFW2408920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28299e0f79f391593c66beee1514b9f738cc52d936f0ac6cd74857265d257c9. 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/QZWFW2408921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8633b99c360b28e460894a9c1671e1f02ebd13ca6f3ade0a69d78ee0dba1d913. 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/QZWFW2408922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef193ad25ad047b58a68409f824e7d37945cc19bee2dff47ee08b0a6b48fd624. 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/QZWFW2408923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14707faac87c786f9c4cb6209558df46d4394215220593bc615d954a7e35eeca. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZWFW2408924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bd3f1b0fad995c401e8a06b402093dae06b0fccbd22f1f59df462c2c83ba90. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFW2408925.
Bob the Habit Builder (Taylor's Version) - Crooked Creek Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61a5a2f06fc947343faadb3305ae227e9686fb58781474ed37b66177f20afdc. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZWFW2408926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3353e2358186e10a3f614a8beb79d8f9b813d5bbd04635766f55eaa604567d. 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/QZWFW2408927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c2b4fcd168842b2127d3b335abb4fae253229ee2f0ba27a2bdea0a9f1f6ef1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZWFW2408928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7b58d03579b67b911303255a35eefb8df05b5a58843442957184c427fc882b. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZWFW2408929.
jort!!star!! (exciting!!excellent!!remix!!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d3ba7a288c2eded8f52fcb7a025da1816786a37928ae810f9c716e0143c54a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZWFW2408931.
Trevor Wong Guitar E-School Graduation Party [Salem's Corydalis Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf278e3849923e3c3559c9b1913968cad742078e651fcb39326a35d69744e59. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZWFW2408932.