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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b625107ddad6853b07203b21f187ac6b332a8f90ee38b678f9c34a40fbaddfd. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c93fa91-2d47-424c-a990-d63a5c9dae84.json and https://artists.proofprofile.net/proofs/artist/5c93fa91-2d47-424c-a990-d63a5c9dae84.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5230595175e11f08f0b184e6f83491f12515bb919bd36814e92647ea0c5961f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PYD832100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2153509bf250c03e2b2c75d0189687d0b4f6c2336c30a13df407c7ea8d49f034. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PYD832100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02737de386ea3e3475bd0246a30509941f7a950b4265f2fa3a450463327210f5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PYD832100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9713e1702346e7769cbe840b3b994d08df9bbdcf450fda65979467a929b3ee8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/PYD832100008.
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 0x702328a308aab201fc1f283ee5e76d12b47cebb167dff8f020b252e0a85bebb4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PYD832100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08224ebc44900965048d41661e087fe3ef4780954874994928f2d2831dcb255d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PYD832100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eaa70419e5aa9b7daaa44a7583f878bff9c51b1eaf9489269f4cd6ee3a7399. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/PYD832100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fd49e1ad4c1d608608af27871c87a54d190a6fa8a6b92125fa9cd93fb1c29c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PYD832100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdf194f9c2448bf1293f4910ce9d6a422b45023357432ec4b3b468c4e0d0570. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/PYD832100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf1deff4181ed34325965e10fc42bec8d406f849edb88a0be16af8549929c90. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PYD832100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fbedf7c155bb01b3fe1b4ae5df794ed44e3fa05330c5a6f5df71d2b1488676. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PYD832300006.
S.O.S rmx (JULIETA RADA, MARINA PERALTA, LA BOMBA DE TIEMPO, MAURINO, MAYRA SÁNCHEZ, BIANCA ORQUEDA, TEKOVETE, LUKAS HANKE, LEANDRO RAMAJO, ANA LUA, GUGA BORBA, JERRY ESPÍNDOLA, JU SOUC, RAPH
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efdf95874698e1d6c880b25861c4437121effce575e0be9ae5e0cd5c9401953. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PYC842504657.