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 0xa3168a648d071deb4c620d9145cb30f0f2aa07c1e257c61427a141f6bc6dbc7f. 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/1e80772d-0d65-4581-989f-f0e385091212.json and https://artists.proofprofile.net/proofs/artist/1e80772d-0d65-4581-989f-f0e385091212.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 0x4953881cdbfbf51a40864fc4ba62723e5857e35081efa5bcad694f48cd9c6c0d. 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/QM4TX2223992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b78ff872c5d0db664cd91720f270ce2866b9669dbc67ddeb5332bb782f4e598. 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/QM4TX2224011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e247a623a243b7606494ad2493aad76b4aa96a24ac154eeec0336dbb85bb48. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW2284037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0f47647294f8020fa281119c90bbe1bb5e015d2bc78094b6246cde6b706e31. 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/QM4TX2224015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320b72eb1ae6b0349a8327052928b52e3350a989b68c707dc45682f202fbdf6f. 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/QM4TX2224023.
Forevermore (feat. Ryan Avery, Elesia Taje & G. Morris Coleman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa390711f213168eb8fb8190fd4069cf99373839a8acae5e8b12b6477c447a2f8. 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/QM4TX2224040.
Forevermore (Reprise) [feat. Ryan Avery, Elesia Taje & G. Morris Coleman]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772e13aa655a38178d71c785235fed62059074fe2630a8bdbe6235ece16af132. 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/QM4TX2226656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4adc4b8ee51a4d4e677efa61e878b6f912eb2b3db94c8478ed3807d53133741. 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/QM4TX2226894.
Lay It Down (Reprise) [feat. Anthony Brown]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7663102eafea7bca732857f02c89368eb12270043055eab6af30a2464158f6. 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/QM4TX2226803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c441d18ab40638b0dd2e13d0d6e0932b65157bf0f7d83b4fb494a7e6e90066. 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/QM4TX2226895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a08b5b3b78b3dfa96920aa57113a75277a79f03cc7ca8b840c6c7b962fbcc8. 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/QM4TX2226898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda15d8d82f41d4965df6e3b40f710dca765e8bae0154675d996c3789fda98bc9. 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/QM4TX2226900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd79d693fcb88adc1fe40b1280e44b27d13d863937ce7cc4704ed66d7c5fe38. 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/QM4TX2226903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18325a21ead5a148e35720d72ad42922ecb43283aad1612a1f9f70b0a827499f. 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/QZTB32463847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45005f86ef879806148cfcdd79b9aa5b0a27fcd3d76274881ad2baa0c655c962. 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/QZTBF2465447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2286fd7ad064ed22c0746399ee4cbcf7389c9d11a9d7f093313d50da4b51e6. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:00:54Z), 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/QZFYY2505141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e63e517c0b64ecd1af007b17bbe1cd97a5819b6279fa44f9119e451acbab5c5. 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/QZDA82565911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d531d8fb5e0ad03d6f2303a86abb09d865f1e42308d9a2b085503b52a2fd91. 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/QZHN92526341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c7e2ace3985115d510f04932d7fd96126091c3406cf1a2f2abc61e40b65c85. 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/QZHN92526342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a703d5bc7d0b75babe2d290f1b0136a3498dca88cb85d8f33ed2f53a6095a26. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHNB2539673.