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 0xe635debff1583606d0a92ec48528f05aa708c6102f41aba7a70b07b0f83f0b13. 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/6d3b2b1e-ee83-41db-bd28-f04e06f55265.json and https://artists.proofprofile.net/proofs/artist/6d3b2b1e-ee83-41db-bd28-f04e06f55265.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 0x3a1df2ba5a5e6054bb8551f6c0ef388293ba3c73d5abd357d8f28159f0fa2fa8. 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/ART9Z2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b843397fb5500e7310772f2769cc106e136c7dda554e14a1d3d20ea94f7f05a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:52:13Z), 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/ART9Z2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455cd52bd669efa28ac5d9f885e3573969a83b8ea3c090ab5afbb33cca6eaea9. 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/ART9Z2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9241373317356fb60cc9622f9326b26f2576966f5ea88fea7a9d3911280f8732. 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/ART9Z2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767ec77c50c35ec3e5ee0e33046a097ce9c383f2b1f808de4d6f7d3315261b06. 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/ART9Z2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b29cf488983c65d1a7082782b287206179ecc392385d939d0f6ce267696019e. 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/ART9Z1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e9a5fd6534f54c73b4327ce12dc69ef6541da811590b2edb3327281403302d. 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/ART9Z1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cac3fbbe29503d9c9ed0e775b6203c96c65fe49430011e82e90d29303391b2. 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/ART9Z1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05bbf6ca06f4aad31ee801f9688f6f72a4533718a84de9cc7bae895bd2a6628. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ART9Z1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacce40389871b1c64c1214ccc254532e71dce3c6d0c06e4f7d4a1516052ade55. 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/ART9Z1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c3d03da099108cd2b96520b96ec345245da8236e453571f82d90e8bd136b50. 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/ART9Z1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f1fdb61f37c8357024e2209db54324cfecbc89aba3850c946cdc0bf12f5d3e. 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/ART9Z1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e7fa668b2ec5c8396199664964ea3117faed7c8d392732e90eeae0d3ac7fd1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ART9Z1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce90f794022ba479ebc2b1ea16ea14458eb5d49d0987370e9d9db8f3f926361e. 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/ART9Z1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41f68b477b746950ad54e13baf392a6887d9331c1fd9bbc5fbcba40e4fbf98e. 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/ART9Z1600008.
Junto a Tu Corazón (feat. Walter "Chino" Laborde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a50e886d0718c6e439fdbec824c7797e5db38c04cdfc95d87eddea08fbb3ff. 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/ART9Z1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931aacf5ce61375dfd0540b96d89e5ac670cfc78c7f4d5e1204bfcdd571e13b0. 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/ART9Z1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ab151a7b82cb0d66a52ec0e8532546f2f7b3f12ecd2eeae4f590c1d05987c0. 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/ART9Z1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbd8a82a6757ca1e24cb6a9f7b1c6295bc029176f324c900d462fef1e7fccad. 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/ART9Z1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcddf5fa63f89ce9084f0d8b7bc46138b395bf545ed0850a97a5ae1418d9af7c. 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/ART9Z1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b7107d7f51eed4e6035d1f77c790a47221d552d7150d654d6dfe20473cebad. 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/ART9Z1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfd58dc90a5cd8afec5d0693e6c3141b1e9b864c93fcb75c9fd944565268f4f. 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/ART9Z1400010.