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 0x41606f17d6c7dfc121783d5bf689834d144489a21c42369430c4dd700d97171b. 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/b7408028-2742-44f8-b284-62bd19a3efa0.json and https://artists.proofprofile.net/proofs/artist/b7408028-2742-44f8-b284-62bd19a3efa0.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 0xc5d3d1b025b4b1b7fb8141503403c212f1420dbdd62537af706494c47968799e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRX202152018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66ead41badcf54ec943800bad3e26571bd691612aa8e8551de35ec5074a0715. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRX452480967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1118b1d3f2de4daa3c6289e1d15d2528c22ccfbda2181132afafdff82119e86. 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/USUM72306667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1118b1d3f2de4daa3c6289e1d15d2528c22ccfbda2181132afafdff82119e86. 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/USUM72306667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd03ef8c52210dc301525556e65cf48e7e02828b814ee9d9f283a7213fdfd73. 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/USLD91746831.
Barranco Mix: El Vampiro / Tingo al Tango / La Bonga / Festival en Guararé / La Yerbita / La Adivinanza / Ron Pa’ Todo el Mundo - En Vivo
Barranco Mix: El Vampiro / Tingo al Tango / La Bonga / Festival en Guararé / La Yerbita / La Adivinanza / Ron Pa’ Todo el Mundo (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c4658d7f9813af6eee399abd1f67af1cbf517eef6aba4004c4830705fab5e9. 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/USCGH2213032.
Las Manias - Black to Tropical (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66ead41badcf54ec943800bad3e26571bd691612aa8e8551de35ec5074a0715. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRX452480967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0441971c9dc72bbf2765b4977274f1c8ffd23a2b2061329fac461df850dd5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM82066903.
Lo Que Usted Diga (feat. Gusi & JKEscorcia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd03ef8c52210dc301525556e65cf48e7e02828b814ee9d9f283a7213fdfd73. 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/USLD91746831.
Que Dios Te Bendiga (Canción de Cumpleaños) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3845b9ef717ce7cce3f0fa218cc10bf74a55bc7546886ae2993cc2c22e1a36. 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/USL4R2426566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822bbf00e0046ac44cba9a9be9b84b8dcad74571aa020e04a5497701efb146ea. 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/FRX762464163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4042a196bdfb4dbaf1aea169f2e9745213bbcfaddc78137f6ed51f96782494. 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/DGA052309395.
Homenaje a Diomedes Diaz : Sin Medir Distancias / Mi Primera Cana / El Condor Herido / La Reina / Ron Pa' Todo El Mundo / Caracoles De Colores - En Vivo
Homenaje a Diomedes Diaz : Sin Medir Distancias / Mi Primera Cana / El Condor Herido / La Reina / Ron Pa' Todo El Mundo / Caracoles De Colores (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41d033fa5910f4af169ccfc86557dbab090f3aa2db4de8ff1dde1772212b43. 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/FRX282319258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb5ef1412e40746e7c229591e92ee7afe3ba9bc2886fba28b028dc431d1fb66. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ES55G2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb5ef1412e40746e7c229591e92ee7afe3ba9bc2886fba28b028dc431d1fb66. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ES55G2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954848becce140d37f72280e29df9eefd795ce96a89e374b3f302ce92e78d4be. 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/FR2X42507897.