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 0xf40cd159590ee29716b2f5fb8559662184dbc3893fab51aab2652554dc9c3701. 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/a6a633d1-3146-49a0-a9e5-f0ed35750eb9.json and https://artists.proofprofile.net/proofs/artist/a6a633d1-3146-49a0-a9e5-f0ed35750eb9.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 0x6a76eeb4638e4ce0278f1e7cdbe0cced1f6f085045ba1a96c221243530f92481. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/MX3741501158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd867ca306b475e58837b4ec324b2f9002eccff15fb25b8257d652b1c350d6cc5. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/MX3741501160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdb440640f795685d3009956b7e55ab81c380972f0fd4a7962e1cfd1463bf89. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/MX3741501161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12259b84771d99aab077a9de17b096b916bb47b7a0d040434fa15280eac3d62. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/MX3741501162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce10e8ed7804739d295d13577f1820f008d4c1bfe5fec183ee5728f69b2173c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZANL1704225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f2b64ef36aaa27cb93a14762de062fc97f065fbec2a7b981122f041bc3dce9. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZANL1704227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce10e8ed7804739d295d13577f1820f008d4c1bfe5fec183ee5728f69b2173c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZANL1704225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba492b42300240f86eb51d7fefac544377a070cbe7fea1492daea32e82272b4. 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/QZANL1704229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92592d4b9ffd0d79a5addcb28f8a852613167b37da368cdcb93e17cb3af6f7e2. 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/ARIXB2206319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92592d4b9ffd0d79a5addcb28f8a852613167b37da368cdcb93e17cb3af6f7e2. 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/ARIXB2206319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1af622c4450e23b639d7d3b79a61ecd96f0f7f93e90af0d1b01a427efa66d1. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/ARIXB2207171.
Amaneceres - Los Musicos de Jose (San Juan Project Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104127a1a5193401a15b6673dfe6096099a8fdb001c111e554bb31602bbbf51f. 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/QMCXZ1900159.