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 0x7a46795f1502bd3ca67e951fdcdcaae08337b0068e838da3731be287c217edc5. 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/da3f3c18-eb32-44f1-8855-6815f601ea4d.json and https://artists.proofprofile.net/proofs/artist/da3f3c18-eb32-44f1-8855-6815f601ea4d.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 0x830aacda2b438c6e3ced1caac7a418e754f9c532716f009863c18d5cd8a89cd3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/MXF369030996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7de0f85f473c54e50caf0fd2995156b440f65e20d08fa832c605ddcf6804b6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/MXF369030988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d20e497936fd9449a30f838de6357e55450cbfbcad70e5f2ea7e60cd435ed8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXF369030986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7a124022f4c2b1c3ec78511dea40d495fbac174e99adb33956446276accc33. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/MXF369030990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa359c5b022f8797e93ed4a3dfe34f46b8a71d023feaed5a41ae5406e75aeec. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:30:21Z), 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/MXF369030995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dffde25f65311785e75d2dbccd30efb79bb5f0a5c62fd42ed70bce13fc7972. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/MXF369030993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144b6eb36526c12bd3c2e4200ff73c55d99db844bc0b394ecc687a2ec4ae5974. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/MXF369231699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87704af32de74eaaa5eea7a1ec08e2c07a19a640d81cdbae8e2d44d2a95ff0f. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/MXF369231703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d05fd97498ab7c5a6bb74c0662449f96228497fbd4094ba13c94899d9d1c41a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MXF369231698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b5fa62ec26cd8572853569b23c5d62438e21eb2e4f73951a845582b062aeb8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXF369231700.
15 Éxitos: Voz Y Sentimiento De Manuel Ascanio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236860784f8bd7e343dbd3ee96e7d2c0d95f25b8b356b5a8d1d9d4db3d90a1d0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:32:58Z), 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/MXF369231705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf1faa04a90008eb0105b3614f6552d8f66216798316d87d42a6a6e058856c3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:09:35Z), 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/USMP69862313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde90ae47007efb09cffba122e6e9b1e519749031687ea65d7dce1006e0af705f. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USMP69862314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6beee793e2ddf7243bbd641732f58ff616e854bcb5f3e905c15aea66820b1e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USMP69862315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f551787b9276fd533d8f339c56b6ff81b1c858e17996e250bad079ac72ae08. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USMP69862316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534931fd5f1ae912badae15fd86134dd31299afe652ef4379ff11975e9ba1929. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USMP69862319.
Colección de Oro: El Trovador Romántico, Vol. 1
Colección De Oro: El Trovador Romántico, Vol. 3
Colección De Oro: El Trovador Romántico, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8897a5645f45c83d1e74379bfe794af0059f36e3bee4b5c1765075a4ee76b36e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USMP69561767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bc16b48bfa2fbd9c6a14fee1f03b9d75790a126e854c8f9b9717689d7f72f5. 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/USMP69526176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd871fbecf0c13bc8da72cb11232b43ef53e9265dc6a8c2646b22bb2929173f8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:46:04Z), 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/USMP69536176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bd1cf1721bc041d0bf5ca5c050980595b220df739705eb4edf82f685660007. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:21Z), 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/USMP69561762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80d9dfa85d09baf72f7864289f0a7061952f1e62f4e49a4094fbd5c47d359df. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USMP69561766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7e01fa36a5f39c2347bbfc37a4b6d115b48bfeddc6a7b373eaebe932ee1c64. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USMP69561765.