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 0xb8ba42f9db028e7cc134d71be8c35d2f320a6359adb4edb771d4c55c6194a024. 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/efb965e2-9054-4aa5-9b6b-ab51abc11fa9.json and https://artists.proofprofile.net/proofs/artist/efb965e2-9054-4aa5-9b6b-ab51abc11fa9.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 0xa4a65c91da481d8596743a405664031a261d461757ae9200d8ec5c2ad0cdddc3. 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/COC011631424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc064c9c14d5fdcccac3355a1b698f653495e615cfc370fce76aaa5db792c9d1e. 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/COC011631425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf103038290d24a895fbb6c794683592cd496abe61666bd14f6436372f3995f6. 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/COC011531153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7ba36061d05f059c61d1821d1243d301e59c09791a19125c5df1f3e3c707cc. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/COC011732312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43743b37e337fcbca084234655233d21f7a99728082efb98dc797dac369e363. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/COC012034224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd675cdd67bf0f880158ff64f4b410ec7f76f91d3e3d1778f0573a08519e10998. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/COC012237013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0f9b27147db51c5ae64e2017b84da78490b5f8b2695966efed96be677bf784. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/COC012339112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b9f93b941ef8e1ccac1df7f99c69d84735791616b0e5e4a55a63701016ea1. 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/COC012339080.
Paguan Paguan (La Patineta) - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa518be5ae9912bb20025273d333d1aa5acd20453705d6a3ae4ba3d4e6d53dee3. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/COC012339114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a50fde1ffbb4453cbb3b261de80d9f21d3da81a4018be5eddfe1df4c185470. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/COC012339115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95ae43c9e78148d3ba2482f01e45a9e6873b824c85049e54eeb29d2a8d6f869. 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/COC012339113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8f3c74599cae68740d64455d572f7074b0d9a44f3ec906bdbcf6dc0bcac318. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/COC012441686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc880fcb78c6bd1509822f93403c8416aaf7f239a27f14ff82c287cf6481ca1cf. 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/COC012441187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0808823f52adf9c72469de375bbb490160891e016bcd86e0b82e2da498825d1. 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/QMUR72300060.
AEO - Cali Flow Latino Medley - Live at Gran Teatro Nacional
Alma, Corazon y Salsa (Live at Gran Teatro Nacional)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02f6c39e3f06a171b04573300c1d3d4094d8f12493007127769f6a757d0301a. 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/QMUR72400012.