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 0xf2da2dc658b839f0a3c1f6b4197877f1a1bced1190af6b928a68f1f819760f72. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/510974d7-a6b5-441e-8b3b-e2c25c0ec40a.json and https://artists.proofprofile.net/proofs/artist/510974d7-a6b5-441e-8b3b-e2c25c0ec40a.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 0xc5e1de200858dd0d8a276cdcf6827740eb5cfb11d32496e1a161ebefa1a4db1d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHZ31926400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467dd597dc6c6f22593cf99ebd26dfa094be5605697ea82ea8e5fbe195464942. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2551173.
El Gran Golpe (feat. Realista Tinta Negra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322942945f8f64016910f0938346334ee3630c7ad0bc1d54ff23400d61ebd472. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1716140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f15aae0d4a4aaa65cfbfe3c0ce1ba064d0a862972b3b24a7085890783a0a445. 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/USUYG1716142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3275db1e40ac78b71617603654c8f62f1078bc14da2b6d939f2484dfbd2886a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUYG1716144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3d2697fc89e4d7cff5b71b2325096b26bca6d3c9de67032124c48690cf7dea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1716145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29f10b82d47f50e98cf20cb7ae4e17a26a897956aa88c7c2c5e5678628a4518. 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/USUYG1716151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b4e38604df1f1ffcdd5dd2a8608f4e80ea01cf2de3be2e9b423ee914934868. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USUYG1716152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb90fc13eaf71a554e9c21e43497e1680b49e36b82a2ceb106b90994c45e1bd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USUYG1716135.
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 0xc16dfad20dc3d297a921211c1f83e6cadc3f7e69002a068a4b819ec91b5b560f. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USUYG1716136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbfc6658c266c3557b23fc93044b0dbcf8bc4dae891ffae9c0ce1a2d192bfc4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USUYG1716138.
KATARZIS (feat. Alquimia Antumalen & Maldiman Black)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d30cb9d48c61b2447ce69b6ec148b8d504ef94d9b329943004bf8104c4209c2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USUYG1716147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99137272c87dc68426ce62655e2064de8e8c9b77f806b614f8c11855068f80e0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USUYG1716148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6858f56e6f6b963d7db900e3b60aea466853650d612ceaf29af997edde313d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USUYG1716153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394ccebc0c6b2fb9440baea2d8b85cf9dce0b675e6c5eae5a6cee5af18be3f87. 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/USUYG1716155.
Cueste Lo Que Cueste (feat. 767 Republik, Siete Ache & Dr Bastord)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e03decba0fbed92c4b0d0946df36217b44fa367e6141f84eb07efebd5fe66f2. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USUYG1716156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e8fbac16be8c14281e6b04f8a5a0f97c821f840217906cab7c99778774cf25. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USUYG1716157.