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 0xb64223b595f3c4d8027f74d8b6d7d2c85bcedbbc850ade7769d6df2588806ca2. 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/eaa87957-7304-4779-8ae3-462654c6a6e7.json and https://artists.proofprofile.net/proofs/artist/eaa87957-7304-4779-8ae3-462654c6a6e7.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 0x1b9628ced83b3cfe7ffa4a31f5187be4db16b232c7a9f0dd7aefc329fa39a381. 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/TCAAT1039930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ce5a353f8a79d059fd7f037d1ffdbb9639139a5f7a522ef9f638d58a489eb4. 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/TCAAT1039932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d6382436cd41c9bf5b71609a97eb0e91b3d42f2ffcc585a2da2304e261d4ed. 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/TCAAT1039935.
Mi Bandera (feat. Andres "el Jibaro" Jimenez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca5a5aacd1b04ba8235619219518cf4637059fa6f1eca9715b192692b1007ac. 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/TCAAT1039937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ec9087508a4a62758298e6859a8bd45b7ace048650153dd268796762930ea. 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/TCAAT1039940.
Quiero (feat. Guillermo Bonetto-Los Cafres)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684ee10e7050cd6d056c1639d01b7eaa9c3899e477be96fda6c386126230a4da. 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/TCAAT1039944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816ff8bf5caf9250eff5d9119faadbbc8a11dd00ed527ee95db9d6cc35f24b7b. 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/TCAAT1039946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fdd794935a7223308a7c65f289df81fcaec6f78dc56242a869345bf701010f. 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/TCAAT1039949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd7b36ab1054a556a91e62acf79a8bdd08da7d2a98c1e698f02174909f970d2. 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/TCAAT1039950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f7fa5512054e1247f5eb4ad8bbe910ebb30502ae4104abeaa2e1ef69c14b51. 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/TCAAT1039954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522f7fe83adf358efa1334c658b64cc7d2ae6a18808edb89a68328f3104a82ac. 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/TCAAT1039957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597830d50eae557d75344cb89905ed0f57ad31a183ad1d3cd63a6f4557383165. 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/TCAAT1039960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8592512b8face1755885e310b0eb2c6575ef047903455a3872202081999896. 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/TCAAT1039961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfcb20aa883d7f44bfe5dd4e14fd69946c91537fb742a8d54ea15fd6a11fc6c. 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/TCAAT1039963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199da152735234041a82fc42f0928d9dd443e3d96ef6e6581d4216cbeb7bfb2. 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/TCAAT1039965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe223c200005d5cceb7dc6c8638d5f45e234e007c67f9f1c6623235061798de59. 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/TCAAT1039966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25be2a8afb62ea7df902386c3b83e8063f3ad9412112af0b2fce226e0719d9fb. 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/TCAEC1937791.