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 0xb7dfffc217fc4d28dc50da774b3adf1b20339f5bb69540f8b426dc1afa2f90d7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c560847b-29f0-4301-b1cd-10df575d912f.json and https://artists.proofprofile.net/proofs/artist/c560847b-29f0-4301-b1cd-10df575d912f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Del Amor, del Pago, del Hombre / La Alarma
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 0xebb95b374c4ae72d717f46acfd7389c68a1ad1f84b5c67bc1267204d4eab10a1. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/UYM120200151.
Por el Gusto de Cantar: Canciones Latinoamericanas, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cfa4f3410db4854b0f3b34f80ba44d504a2d86c032f00be6949fdc67ce35e5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UYM120901409.
Las Canciones para Alfredo Zitarrosa 80 Años
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b73a7adc755a2be357bef38bb2ecba9a9da432951e9aabe681c6a435fca084. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:05:26Z), 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/UYM121401051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a81f373e34612f1fd9324a228c4fb25af7df4b5e40d84be6d77d99f80e0d690. 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/UYM121401052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7579e05937cdd0e51c4d002b6664a07d09143b5e1c99ba193d1f6fed146042. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UYM121401053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d335662ad33fc8a8fa3e4d01205d24ae2f32d5a975884338bcb238e3c0cd8c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UYM121401058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9216db9d57d0b891d7db4d6756364d99810367082160335cd107b7a2e5ed38. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/UYM121401054.
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 0x84d333fdb966973a4c84a53f1660103f8f95703ff78cd23cdc21e243433b076d. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/UYM121401056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc88dc7b88a36bbc15197d140b6a5f1921db2ea29f50845032b54f74cb91eb6d. 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/UYM121401059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99bf0e9a3e4ac412afbfaf67e382f2b05c0bb015010ff6caa4f6bf47389e50b. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/UYM121401063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe3c6fc1008d4ce3a435baaba216ae2f93b1db3d46341b743394bc4bba2798e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/UYM121401066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8c277e88cabf44655bdda9cc43846f18af7d2fe008c7da812f2eee2af8fefb. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/UYM121401067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7098e8b2e99fc121d8e62a9194752077e62f6a57313b564a531dc41690259dfe. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/UYM121401070.
Ayer Crucé la Frontera (Cantiga del Desterrado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d26e6e91ee1e5eb2c43eefdea0db9ede6863eca1e9f6b868bf931cb45c05f62. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:06:28Z), 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/UYM122200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57fa6d615a27cf4215ed398170837c25b3da86cf5e5846e77870b78109538ca. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UYM122500658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f0d18a219e37058782cac30523ee8cf7c59ed5d1aff3504b5210dc01a04ca8. 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/UYC120800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7723de9a7d3bfeed5008dc52723eecbb839ee11802284036fdaef34c13dadee5. 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/UYM120701443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d2d562bd3d7d7883f55586b9407839031366613be8be9b19161ccd8440c2cf. 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/UYM123000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cec5a600d4e51dce71a61ccda0f31daf3776a40acb1f0135681a95f2419d9b4. 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/UYM123000344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf751036384f14a4aaeeac596ccd8ab292f00ff0f17822a513094d74e8ff88b61. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/UYM121902555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26274237e5ec26fc493afcf3be4cc51fa18cecb23d8492fd4ec22f9abf6a90b4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/UYC120800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11ba3aee91565ba7d8566cb6a7e79afce725aaa9dbbfa251173a5d515097067. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UYM123000347.