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 0x020f2cf27e555d82d72b794f8891f5c29fc981ab432c6ba8349d78a2e1237698. 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/a2a2dc5b-1c3a-44f5-bd69-c2b475795e4f.json and https://artists.proofprofile.net/proofs/artist/a2a2dc5b-1c3a-44f5-bd69-c2b475795e4f.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 0xccdfed3fef61d7fc7cc8d2ba77ff2c8c02fbb70dd73680bfef5c6a5cab967ba8. 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/USDXS1200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8eeca0763a7a6694c8c9572f407dd0f52718a6b9adcfeeda308ce74766512. 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/USDXS1200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a284f65314635a73ecab67078d4b365b85dcb6a169a9cf88eda816ccab34484. 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/QM4TW2172485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b86971bc306cefbdc46bb53713adb8cfcb19830a40d9d43dde6efdf037830. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USV351342944.
Los Dueños De La Calle Con Humildad & Respeto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafba9430c0a87c7f361abde7353fc4d7a2764b8d3209aad95fe37b3e8449a230. 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/QMJTU1351000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f5c9d750d5d14db7b2bc8c572fd5526de56d343d75363bdd89f822fe29d24f. 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/QMJTU1351001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60d235601ffaa3b6b73c33bcb4b488718d0ed30765da17c541f5f9dae6be23c. 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/QMJTU1351002.
Por Ustedes Doy La Vida (feat. D.Ozi & Ñengo Flow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0917084ce2ca2ae837dbf3996cbbc37837d62fd8bde84c6498a34675141c92. 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/QMJTU1351003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1607f25949dd9ca12ef271f473c5d590a50aedee09d0ed5ebc66b2240756cd7. 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/QMJTU1351004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e8082c732933a381f5583db68a512b8f31394f7af443f6f2f5710e09ca78fc. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMJTU1351005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e56906df1daaf833f3ee5831c0bde1a3c186973fa8121aeb76c1d8b9414fb44. 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/QMJTU1351006.
Aquí En Esta Prisión (feat. J Alvarez & Kendo Kaponi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb313355f4ce96ea3c89516a05a385d0d3e91b4801bd1cdedc026a5a6df1e7ec. 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/QMJTU1351007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea49ba56320013ca010920280062014aa600da081cbe43c27c0d9775fac4807. 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/QMJTU1351010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722ccecde38033d6be92e53680b748c9548f58fdbee97088225d21a99e3293cd. 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/QMJTU1351011.
Los Rápidos Pa Las Misiones (feat. Franco El Gorila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3d62d6b4dd43e060d8fd9e51d3740a1bafae1967f986f4741133ee3b6af635. 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/QMJTU1351012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16fb850753a957b8aa17879c82c1584329fdbe8f5d8da778deac88d75340ffb. 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/QMJTU1351013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b364fa4801cd3395a6338f3b013a97abaf5f3a87d9f11f1adeaea11dda5783. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QMJTU1351014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956fef12b614d18105d11d4db2c6caba895bf3ccf034bbcee9145bb98b8ea770. 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/QMJTU1351015.