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 0xd104425a7daae466b6417d40122074328435271b4b5a20844bf9734333d5d7bd. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff987239-80c8-4c3a-8299-df11c19758d8.json and https://artists.proofprofile.net/proofs/artist/ff987239-80c8-4c3a-8299-df11c19758d8.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 0xf082b4acfcbd728afac78834bf0fee2b3a96e4ce251fb1e3ba3d851b4de8be84. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZ2J21505742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26100637f68ec0d727d92165bdbe97217664c08962049aa4af3e3c72656e6177. 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/QZ2J21505703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae10fd668c692e5dfc924e777b0dd3321ad6f0fa362b1604fde08003b59b9e2. 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/QZ2J21505743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d38a68f93f55dc670f8988272854734150eed490b3dbcead8124c347d0c214. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZ2J21505611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26fd525e07e12c479bcefbe9f8b90ccd501698ba2c334db79685e09e983e357. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZ2J21505744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1035c6958c58d8e83abf9267bdd3779bb87b524977fda809eb1971d34b5880d. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZ2J21505745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ced4503412c6d22fb585c1ec833f737ae5a525fcb5c77c29588f2491c75c2b. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZ2J21505746.
Te Siento ft. Alexxander, Coron3l, Agustín Ramos (Parte 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed10b02084a66a023cf498ad23cdb89e6bea5754d37eadc2b2abc6bd6a69be4. 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/QZ2J21505747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2806304edffcf541cc7fe935adf775655aea01636537a2aab070fdd3ffe1e4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZ2J21505748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c5169051d44f201f7a7e7aee0f3e3bec3d7057c2aac949d15913bb7f31190f. 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/QZ2J21505749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b989349dd3a5e97818386d808c0a979ed6b533e4faf0162bcd2116a340775c. 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/QZ2J21505309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e20d966bbf69b1a7c2359ac3845dd28d4f63e2612e5b722ebb98955c33a659. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZ2J21505750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9380b6ad5dd150e699420ea2d38323a52c126b38af8e004cf3be14ddc8dbae3. 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/QZ2J21505751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78291bcf60d441bf8a068b84105a988643276422b470c9d5eb6b2025036efe91. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZ2J21505752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48634b39d99efcf8394d06bf29659ae38459bed87825b4493062384cee433a5b. 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/QZ2J21505199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75467af976553707e12a2db1ebede885548ac1ccd292bb7c265900805e79374c. 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/QZ2J21505753.
Indestructible (Remix) ft. Anmily Brown, Oveja Cosmica, Ada Betsabe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5da6ab192ca9db537c24cb8f5262e942ec0ee765e5c47ebc9c168f2a32b3eaf. 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/QZ2J21505676.