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 0x0ba9b7e90a2ca5aaa62c54a73aa48097b1cb9482f5dcb886cb76bf24bfc00153. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46573b5c-50d9-4d15-bbef-09d7830dc816.json and https://artists.proofprofile.net/proofs/artist/46573b5c-50d9-4d15-bbef-09d7830dc816.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 0x5a428933eb570e692bba30998a5a44135c8516f1ada0aedba33af7cbbc14ce03. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QMYW20500717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0757224f423a10430f98a4bcef135c0fcf9163a6eaeb2d00d2f48841d8df66. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMYW20401438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac8b5ada27f6d041be5a5dd30987ea5b9ed85b19882ece9b4f1d6adc777bbb5. 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/QMYW20500719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f808765d5ab5168251c3cbb5b6e08929ee8ae3143a63ee916a1e535940086. 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/QMYW20500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c023ad77edf58b713f25da4b9ac295d14b737a8e7aac7809913b8cc3251b7. 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/QMYW20500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1098cb8f574aafc771eabf89f33de9fa9e2f5c17e84b4deaa27eb65a1829a020. 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/QMYW20401439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c7e2d247a6c2748dfba069e49d50eb1a4c98d9660aebf861015eea55aee912. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMYW20500723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e85c9e684cdff33e65196fb5db9e271078ecc2710c6dcc7882af39be09339c. 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/QMYW20401448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a52a99c2d1d9d55c860cd415c803aac6907182d030c00fb2e739b41b38417d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMYW20500725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec99a41d023bd58f716015a510223a5884056fd6fbbc2c811560306a212f6b7. 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/QMYW20401445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbead8d72fdb5c3472309563e58051def2712eaeadd04c24a0c5c55b39e8496b. 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/QMYW20500727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce260743dd3fcb9a8d0e9545457fd382ed19640762678dddec66c7dbb3c5772. 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/QMYW20500728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bf2400353d71aa431d62e5e392e78f0af1ee097b7ce4d45fc911f7a72e77ed. 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/QMYW20500729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a80bd12703adc90efa1b2c914b35b996e4e54af824d64803e98012eca7e5a3c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QMYW20401444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156a8c284825cd89f05e8747731da611f11f7e5c4964cab0e38240ffe61e55ef. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMYW20500731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653eac4bf5664bec70be09cc3aecdc02d258dd5785455a05627daf1293479827. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMYW20401451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b33310edae75ac25755571e672d97bde26c549d03c1f7362af00b584ed6d0a. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USMRE0853601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91bf4c4c29eff3ae31db18c8a9a9a0e51d9959e53cecb236e660886cdca18c9. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USMRE0853603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f01d551c3389a3bd49c76a59e8077b289675869fc35bfeb33e2c777d149c84. 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/USMRE0853605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c85e27a9477936a1e19c7b2b3f9514174d4bb1e82376ec2ba71cafaf846468. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USMRE0853606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc868ce82b72a1b0c94ee516c26f7e7c66ece794b605f96d1148bdc06ffd7d152. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USMRE0853607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb4f4b1374c7c41f5307136c3b7caa5fff7b275951aeb2fa866c359e63d170b. 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/USMRE0853609.
Parrandeando en Navidad (feat. La Calandria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec91a7729e2bf2a4ecf359360ffbf1c92aff00c94ccfbe73723d64a58f008094. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USMRE0853610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7339d36f6ee21676fd8da50e9997fb00ec477170ae407c48e22d78b0ee4d5f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USMRE0853611.
Te Quiero y Tu No Lo Sabes (feat. La Calandria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ce13c98455e7b992e972090333bb993bed9f6d2d0845492de4b0cecc449a78. 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/USMRE0853612.