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 0x68b3024cb768408a7da446dbfb3df33e929b0dee7ed0b5e5d7d2ccb584c8d3cd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6d2e5bc-092d-454f-8e2c-43de17bff9b3.json and https://artists.proofprofile.net/proofs/artist/c6d2e5bc-092d-454f-8e2c-43de17bff9b3.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 0x0e3ac795a7e5ee78b7852c57a70f3e8f7610610aa50c7076e6c19de83f6e9487. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFQ2197891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862b622b5676a180175c400c6c1132eb0c44d51bdd79da89edf9c3c7c5342ad8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ62078553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6664073a6ddb59a9b7267c36e4146d16464bc174ffde64ae9320279d422c294e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USY242478940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf459263a163627d0863dd10c8a467b64fb33a39d1f8a212fd7d69e09b84894e. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:34:08Z), 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/GX53U2474174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848cc304c06caf9e99e093c7f05d818346800daf9886a6bc34f632d19e959edb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX3Q92403063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3cbd3a7aa0bdc0011fb6098ae23ca0356bed156b5f2c1b1f99f5dbd7cfc9a1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKXN22356240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7382fefd9c5613a9cfa69e4c1fd82aa52532aabdfad088ddb9133433e90b150e. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/GBLFP2386878.
Natalia de Castro Reina del Carnaval de Barranquilla 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4782b72b5b84d573cbd40a371eeb73a8b30067709eb550e56ae960da3c501d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92317865.
De Millón a Cero, Mis Cinco Sentidos, Vivo en el Limbo. Tributo a Kaleth Morales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813bb481e592cb4786c1907bbd9e4fdb4c9a1f9a123504af50999ebaeeb8ab89. 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/GX53U2062609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8938c9550e40523657d4f1fcc6f0679c6640079c5a5270895ae46d504cbb056b. 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/COAKK2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c3edb4d209ee21e13f9983513b49ce955eeafa84f2f0cefdcdd8ddc0ad7aa0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME2125410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ba29421bd6d9fbe72f9ed7737c2bf67355a7a8f4e9e0676f111d815e7469f8. 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/QZDQH2151169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5bfdf4a561f243b41ce96c08b3a8110aca78b323eb2aa9206adebd5dd6751a. 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/GBMA22098626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27243caa1e06da3d9151be124d0fd90dd6446f958e79e1ca6017ae79316ff207. 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/USHM21986427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d036152f8e57fb309a7e3b8dec1476e9dbf344c51605b795626c4e91150ccb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USL4Q1815066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd421ab09767025ea3c1706f1e2438788c45a2844210db592bf4af8b430393e. 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/USDY41872555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fc5a8667c77a1b55e3ed2668e5b8ceadbbcf84cd19431a9a5834da4d3fa4c1. 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/USL4Q1761371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdcafacb6042659dd0607d5f2908978e7f1b22257cb59768e1a7b6c537986ef. 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/USCGH1761951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb64afc288216291d8bf253d3c7f8ce29743b41b5c8435f6f77e1ca2969cad16. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG1659992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa584672f7bf3f842442d301b851e66238ddda53c8701cc8e5a3982a896659b3c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ1634243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd550f2f5c332d15ba3b582781cb82725ac3a55b2769d72a997958f620e28f548. 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/USCGH1663935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2982c158ec79eefc94301835047039bfd47424b9777a28e6be95986426f48a05. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USHM81549399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a822965294b1fe595bc15f76d1cafdca612c9bd19424ef35440a98bd9a68668. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM91472134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5fab8658cc3d49c8dc550f5c33c1ea05d554985587d39bdcf526d9acac50d4. 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/SE6I32005107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec94302d61be5a8c63fa55e03a6a3937b870e7d2e07662417bfac6f2ac74549. 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/SE6I32043514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae4ea715fba62609b96c420abf398ed35c184a681307523a6ecd6bf79a9b290. 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/SE6I32061892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97c6e9921d8785d9f4205dcac0addd8800cf4913bc5180e5984783429b3d6d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6I32005016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f7921906a710510c01db7cb9ff44de050ef4cd04ba51d7ec9fa033c936585f. 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/QM7282346163.
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 0x2037c99a37d43bc2bd8da163a62aa5d1d0be930c10674122a1abb2148a75e698. 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/FRX762464162.