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 0xfbbb8addd79ae532b4328c60288c137f1fad8cc1b83650f36602319508a5bd4b. 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/abe8dafb-541d-4d0b-898c-cda0aafadf3d.json and https://artists.proofprofile.net/proofs/artist/abe8dafb-541d-4d0b-898c-cda0aafadf3d.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 0x7acbdf03ab44084a8d7d6f8528e204645156ad529a2c7cd628944fe03a28b47e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZW9L2367924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7b62cffdd2f24a609f9a67b80e52d84302394a6204510e8cb5d6003361a6ad. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BXP0K2400858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa397adf595fc63b97db9a85123e4e6beceed5c110a2bbf07a0aa9ff088365471. 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/ES22F2500295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a87d7493b073bab0e8c27168189d5d40f481936f01db18fbbd324e6d173fe27. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/AEA3A2582751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c601ef10ebb9f0b2a419458f6b5e529b956e32fbafa6f3c86b613ba87aea14a. 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/BCZ582500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83ff887b80d34272d397ac66803703b8fc3703e2a036f328bcf83f92948e4aa. 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/BCLWS2501025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1318b860748fce005864b96fe5b1f1e9d3f2f66f6f0783c2110de1678fdc53e0. 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/BCIH82215553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315cbfe6d821ea25922b9911e51c19e0fdd9d8ad27ec96a125da88015a3206e2. 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/BCVK92501247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8689d8246c5214072ebc9e717a1d96d26c13f72472b919462a67c86a3b8e9655. 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/QZNJV2526371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c7e73b1fe48dd572a61dd8fb0aacd9620e4e792f598a6f51454330a6b72903. 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/BK16P2500362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc15290cd78e2988b714fcf554d89a6b2bceb2197d404cb0f2f65439e09b5467. 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/BCLWS2501269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0078c62ce5a1e327287e41cdf3757a103b5ab877ea7473127ea7402ff894a9c. 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/QZMZ92595164.
Não Olha Pra Minha Cara Não (Slowed + Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb27a9e479ddbfcc830e125387880d60a11ad679c33504af8bce09c0def76e5. 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/QZHN72395515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef08d42c3505668861e64b9a9f222f65b44cd34a5248f5775cd93dd9fec17ce. 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/QZHZ52184469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad46b503ed5094cfc5cf4fe6e1873ee80d253d3d21704ab8bc8c429bfc402b2. 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/CA5KR2351690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53d8f51796b24c25d56990699b6d83379f897de6fee6037811b75fe5025bace. 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/BC9MG2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b9019b0a870e3a4bcf0de80b891af6b5c7e77c2d295303489ee05e911713d8. 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/BC9MG2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863a66b3721ea05309638a20c900a51936b348e84a9d800baabab5fe59a225c. 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/GBMA22418381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7502adc50e24abff9a7d64f198422d423cce2f0f21ce30f2be046a986a371b55. 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/QZ5AB1824176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926aa9727a7cf49deca3f045f4c469062e2641788726081c813228e71edfc1f8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXG6R2100939.