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 0xfca27d8575a917df3548c8f62181e7c34d970e42b3c25dcac1ab06a9c0248359. 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/784f5f94-affb-4ea1-9059-e75a0b728f8c.json and https://artists.proofprofile.net/proofs/artist/784f5f94-affb-4ea1-9059-e75a0b728f8c.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 0x6e15c9c30ade29bcfa38facf3e5fe2af2651b9de90730f1414348420fc203757. 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/ARD8P1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822e4efac46bd61a2fa15ee39f13a5a54aea70286b98a02a01a808bd93ddb5b0. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ARD8P1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c61806c660301c67fa0b336d84072598680d09770f0cc35110c510cb91c4fbf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARD8P1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bd6cb70a33a1769cf26f758904b3d12c5a3d127d81164972d7fd824829dba8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ARD8P1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9ed9be99500269fc4cfb60c8e8b813bf2cdcb3206335cf526f2a46de7fc288. 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/ARD8P1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d686d8ac68b65413b400f48326e496b43054298ef62a42e15a6af598b74ae. 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/ARD8P1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca07c58e48d854c39046ffa1d2c8b994fcb3568dbd9b08882474c2916cfbd55. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USANG2223509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfa18f5511e83dbb96e6d9ac49cec3771411365e81401379961796f14eacdea. 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/US3DF2450570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4ceb10e11c60d25b12af684b59d6df9296dd18e98cb8d673908bfdc9edb415. 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/US3DF2402305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca000e2c5c7d4c84133b9569b64b96b82120b50bbca2dd381ccd927ed2c94794. 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/USANG2294197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50020634a0d3bc5845d53684e2df6d63f2fabfdf5e67b890cd0124b08e8b596b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QMANG2203280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb2b1c3e3af5db70574b876532bb44b9b55ef0001c5df2ba0e26d45244eaac9. 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/ARD8P2500002.
MOSTRA - BLUJÄUS & FRANCO DI MARCO REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd449df39f34ae20ff78e255ef674036979423abca08888739671d820e72dc4ca. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ARD8P2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbe9028e958bb52d103f0b42db7d78d4e4acac2f67a11f7e0320e60ced37937. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:10Z), 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/ARD8P2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34bf23a54f5169004a4df280e65bc97ca8b08152294461ed0f72c4008db6407. 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/ARD8P2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2955ce328d5208484d94670c096f75ea9054e40e9f0938527f4b591c5cc5d3db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES7312000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151b4d24dfdd291a206efecaa848c1dcee6799d01663f48c0f6cc8932fe59a5a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AEA0Q1714544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed5a059fb78c15ec1e3468e98b0747e658ba63c3e67f9b584f90e76c98d36cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKXN22153315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d490ce72f4eb86c441907424bb75f343fbdf93f04868fab8d85aeee362c135. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGJ1826322.
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