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 0x931f4673a68b1ad656142b76530fb76c064365eb666654db526c849deecf90fe. 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/4d79a4a5-045e-470d-8657-7304d2fd14d4.json and https://artists.proofprofile.net/proofs/artist/4d79a4a5-045e-470d-8657-7304d2fd14d4.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 0x5c529b0ecb343c84880db1e1caacd58e5c4ef933211fbb53022ac793f6bd9845. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARG601012739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb921ae92c397ecfc312edfd0994cc8a3deaf62139a11bc72d18fca79a98da. 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/ARG601012741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e12e188c83a9843b80242702e1d2d024fb0f89cb4d7bda6bbe8037a9ba8d343. 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/ARG601012742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66b7f7c65c8360213995d6a142f44d43b4732c4a6843eaab64da3e1b4026ba4. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ARG601012746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba2674423b52232e3af4d20761a6634c46c35ba8b76188e89c4779d1ead1b91. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARG601012748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceb807ee9e03723401c5d467d5e90cd95972c2f93725e40e4444f82f92624df. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ARG601012749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0bec3a30518defa251b42f7f90c008654a5e4fc64a0aa02cce47153cf2d504. 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/ARG601012750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad7c6287421fb5fa3b7ae3afcaec3888c672bb934e12358a5eb46613c02a6fa. 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/ARG601012694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d42bff651524c37446c7aa9572aa9aa85488a6985ff13e739322b910868c33. 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/ARG601012715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8f553f21a82da440930d15a4d132a8e8c79dbf6de4652bd309c7dae1b848c8. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ARG601012725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35282a2749bd3a5e63400fc46761f37806905f6f90d2febf02152d1511d0acda. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ARG601012726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd39c9068911ae22c38aa74aa060358cba1e1a11e20e9bb1526497f6c21d388. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ARG601100318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8308200ab7563d0bb3b82b27d27d5aec149a6948d73beefdf90a3dca18675524. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ARG601100324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb272187bfb4ace26bc2955d46597d4eba6b17e67f3e1b0679b7f008a010e15a7. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/ES71G1608418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937172c8dfa0eaee2138c5169728bcba5766e181a1b2b73ad7ae75a2abc2cc4f. 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/ES71G1608428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf14e9f8fad8f1316fbb75223d88bed93e45c9785df1a7414cc2d7c5fcbf484. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES71G1608430.
Si de Cantar Se Trata (En Vivo) (with Facundo Saravia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4daeae4dad42c7fc8d800c2ec1cf266c81350f263d426f6e65c6eb9679f927. 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/ARF101600337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62271f3507e3aa641971c3d0f9e90ebbd4f13dcd4bf22b340eff35687082ea84. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ARBAC1600014.