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 0x277f59aaed42b91e1e8b2c8f0054525aed43db4d29cdea8b184b7e9ebd4fcad2. 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/f5b8ac79-ba10-4bb3-a2eb-47012fb2f0a9.json and https://artists.proofprofile.net/proofs/artist/f5b8ac79-ba10-4bb3-a2eb-47012fb2f0a9.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 0x87b0e658524566f8c38f6f569a48312b955964f86c6bce3e484f5ca8f731e798. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/ESA011854794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dab0eaf938e69d90e8a6153278be558f3cd266352abcd6f747740b70dff671. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ESA011854799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b8f5cdb19705a9e84b47d0e0114ae123ad55fecee08f62736a47fcc94a7b8c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:38Z), 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/ESA011854800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9bca2d6c358fc8a6125d457b2cbf856d5f20c364548670c33440f682119eb6. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ESA011856148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71446d9501b33497f2ab5e260753a232f501bdd937261371d3321ccf275668a6. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/ESA012136032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7ff3d9005f5e041d745ee042bb265ec28a31bf2c84e6175d1fd141476f7cc0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:41Z), 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/ESA012138544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1488787d9cb179e5340f37918c74e548d1fd5b1aece3e36f8fa7e22e02c042f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ESA011672596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715511da488068507302bcdaac66c4ad563a1f665abfcecf977a533858afc709. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:34:34Z), 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/ESA011672598.
Quererte Jamás / La Piedrecita (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f90157991e20e146a812e07ccb347b67451fe13850c5d7eff53182fac4a5444. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ESA012239306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdb68ef11baf85bc5dc1d1a8681013b4b1962d940e33097cf4a0fbeb6745f47. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:40:44Z), 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/QZNW72277150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb5a9b9a3599aef4b439ee10c97c9a59cf33ebc6b3d62c23ef2f9bbd86553fc. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZNW72277151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e421aafb20f900661bce76e04f57a521abe5522869bd59f40e11a34d6b005e7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:33Z), 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/QZNW72395701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65757078502f8f53fe9d104caf6dfa8821a37ff55e78f96f7b840d8256603c4. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:36Z), 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/QZXLZ2308362.
Chileneando con Guitarras de la Sierra (En Vivo)
El Sinaloense / La Iguana / El Camaleón / El Foco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd209e597fc08a0758d900cc2c8f967bf05920ecbe62f4bc0214183a1d7c18e34. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZXLZ2507990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233a18623237b506b631817d6242b40e677a759d7f0e42df135a58a81fe21fe0. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZXLZ2507993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e25419c872a12ea848192a329e9af4765d367ae3e7ef982c8c3ecc68f3cbfd2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MXA3S2400659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1450c947583fa29b9cdf329b2590e4b18d32803271103d07f656f4ce30a9f38f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/MXA3S2500758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aea52ca217378a0b95499182b507fe7c21027f4bcf0d63493633c13e24abc4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MXA3S2501548.