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 0x65aa903ce79bf375cd92bc35ae7f5db3e6cb1c5503668ad45f812d7a8e479017. 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/7a1668e0-12b8-4ce0-8c62-537a718fe190.json and https://artists.proofprofile.net/proofs/artist/7a1668e0-12b8-4ce0-8c62-537a718fe190.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 0x69c2b0dc17bf3d88ab26bdb1dc994bee2d6eacc530f577be01ec146ab06047f0. 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/USCCW1611322.
Ahi Estas Tu (feat. Nneka) - Version 2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d971084335e7cb1ed7a112925af1639579c82ef6510cfcb8dd58e2a1cac375. 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/ES5021300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e4419d50c6fbdddbcc46692ffc1b414d09a875432f842d8591147c5e0703a3. 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/FRX620550020.
Camino Interior (feat. Paco Fernandez) - Too Much Ibiza Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062b157729f63a8b4d2581fb26dfeb33e0adfcea25118614741a64e51a6179e8. 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/ES5021300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e50e37b95d1f8624208faf4ce3f9b326fe60025d582b350b75441eac0a1bea. 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/ES5080600196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e135301f2d17d923eeed7e2204d65e1e41a5936094c997a50e492ce8414917. 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/ES5010700157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d57e8e2c2e24a219718c72d86cf14ec0ec90c477454b1f9d375162762c0be87. 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/ES5021300598.
Hoy Puede Ser un Gran Dia - Tributo a Serrat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8597014d0c66106bbbe25dd4900452546e5b525d2a95902da650c082d1f1f1d0. 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/ES5110500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2788daa15c5a03da6ca66a4e9c65169c65f7a39877d7c4c60cf6f3fdfc58cd. 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/ES5021300606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e7bc9fb173f2b02536760bb7efce39d40a72eed2d1eeff03e27f99d3ee0cb9. 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/ES6100926203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c198d3c231dd68b3a018999c1c572b286215ebcb87d103e17139f13ecfd825. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5021300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f94456419d657afe27639734554d9c3e676ea9d3d92a37708e9a30d076e1307. 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/USMAR1610901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997bddd9b21f4c42d3d4429cb18df6736291621b10a64ab87d257d60335c64b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USMAR1610902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c77bf6db295b915219d00043390f42e4cf4de13811b4510bc70d3ace4033a2. 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/USMAR1610903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585d03fd790def8abc85090c6b9498825a2116ea9a439a536f9778afc6e7247. 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/USMAR1610906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce551e36bc1bc01305499505394c5bddee409949c738dec4dbf3a12fa9679cc. 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/USMAR1610907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa198432f667f36ba2a9dc10a652f84c3df7c8420a4e4bcf3bde1ca0394b216f6. 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/TWU712409912.