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 0x2532a18eec43fdad4caee0bea4ff6368912392c20d51b1744739c981dd20f8e2. 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/13d85854-7fc0-4433-b5a2-dd2eecd21ea4.json and https://artists.proofprofile.net/proofs/artist/13d85854-7fc0-4433-b5a2-dd2eecd21ea4.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 0xe941336de046034a2a3aeaf8245087d3fee30e2333bd9aeba7b0a4768a720e1e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMBZ91560578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4515a76590acbb5e2af5c24b21435984069ea94883b4920ff5a1546044ebfd3. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QMDA61578610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7454486ee6ef938537a43a258f7e716bf112a6d6d3b3ed03a28bdf3e6573fae. 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/QMDA61578611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332f76d3071a09937adeb7da0d78d78cf307a772419c590f062d3e1bcfadfd99. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QMDA71581185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e2ccf64076cc44168b44c284522d1a512ad0bf1ddf0ec5302b37234dd549c2. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM6N21777712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1110467fd0f12c2578730dcbb772e244ee6ea04fe0d156e6d662f4c3f5e1b4b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QM6MH1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57382ad6b0ec659d25d6b60ba878eabd3c6a4635182ee8d67bc0cb1edffb4afc. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QM6MH1900010.
Ambientes de Aliento: Shepherd (Psalm 23: 1-6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdc15e625e9f578f7e2d99cb03060c4be808ba0814a2d61caa9450d84e965d9. 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/QM4TX2031028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8223e958441f657217e9de2b9addd0a4624c05997bd2d0d797fba6a7476c55. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QM4TX2031031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cd9561d956072404052e76ca54019f001d6095a8a481106ece3e817eb0b2d4. 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/QM6P42074027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7a64ec20b2267c86de9735c97e8bede8267e978f229a38def7e7c11c358bbe. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMBZ92011113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae8ba9dcdc06d713d2386d93b436578234f2e1f73483a913624fd84363cf5ba. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QMDA62293440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f17087982163b67c493378b17bb93963b61422474a2ac890a6e8dfa434828f6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QMDA62293441.