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 0x10cdcd7f2f781cff67212d2267175c1bce49e15a836a9999d351c9829ac70e26. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/368905d3-f2e8-4e47-844d-d3ac3b73c0da.json and https://artists.proofprofile.net/proofs/artist/368905d3-f2e8-4e47-844d-d3ac3b73c0da.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 0x5c1b89780973cfc605c371f6e0f0d87e54c46af3b11e4b1ddc21c5e92ab94c9c. 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/ES5150902004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd971ac2946bcf4e3af40b0589d3f7225f1407b76e1579ba51a46149c2f168342. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ES5150901999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f684f7430ae5f851cfe0bbd51fe66b8f3666739662301eac13a1f070e742c7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES5150902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ef32bdb112aed5279ef585f57ebdea17c450c1ac4bd6b8f79c17c9ebbad874. 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/ES5150902006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd971ac2946bcf4e3af40b0589d3f7225f1407b76e1579ba51a46149c2f168342. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ES5150901999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5a2a295614a222894422f131e285748765880fc6ee5a2bb1ed966de498ad84. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/ES5150902000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f684f7430ae5f851cfe0bbd51fe66b8f3666739662301eac13a1f070e742c7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5150902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a4cbf640b0b35abd0898eaac9dad9a4b3f80d656aa4ef71376ac1ee1e85255. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES5150902002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3961ca866e65fd7d6c4786369fcbee0bf10a131699b7836b7b5600959f5dd79a. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/ES5150902003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1b89780973cfc605c371f6e0f0d87e54c46af3b11e4b1ddc21c5e92ab94c9c. 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/ES5150902004.
Ciudadanos de un lugar llamado mundo (Spot San Miguel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf230b8153563c123c8ed61c73c573b614743eade852119364005d547fb2cead3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ES5151101363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9811b819bcad2b5cad1925ad621fed6d389b5443033796489880b2de279a50. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES5151202432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df1dd26f1686ca0dcb7de2471d5a8b7b4d628c2e818972697ea429710c32bff. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES5151202433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9de999622edfcf393aa7b8d6ef629a7c417fe6a3fe188631e1b9609079221d. 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/ES5151202435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc9b05397108a68f70cb715591222fdd55820f7e8095c8737516aa852b2c396. 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/ES5151202447.
Nadie va a pararnos mientras no dejemos de cumplir años
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a297d6fd37d03d23efbc17de828535a53c866f9b774ce621e72547af8a6bb4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES5151202438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca3b86b284c7fe0a7831056f91204aa10e517de388d247266bafe0ea7f19425. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/ES5151202439.
Delafé y las Flores Azules vs. Kulyela EP
Estonosepara (Singles y Rarezas 10º Aniversario)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3961ca866e65fd7d6c4786369fcbee0bf10a131699b7836b7b5600959f5dd79a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ES5150902003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ef32bdb112aed5279ef585f57ebdea17c450c1ac4bd6b8f79c17c9ebbad874. 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/ES5150902006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84e4afb09140d4fe9a74bf3c4c54301294e87ff30e7da5663653503022f13af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES5151400790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399f8a3174fe23ab328ae2e95266f881b11a46f309cb69ca68d0e0722fb15b21. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES5151400791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf230b8153563c123c8ed61c73c573b614743eade852119364005d547fb2cead3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES5151101363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c43f2cd6629659f373319c0f746774105b70834765f0c1c2c3c6fe0bd6c750f. 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/ES71G2306502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e2bf8f918e2d80759df117eade4cecb0d426f1de00f2ffeb35ca485c5eb494. 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/ES71G2404950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e259712814a1412ded9308b15064133f41d4b6563603c6305919924f3a90ce. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ES71G2500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbd12319c0b3fb97a4c998057c891a690f3e8461bebc1d533848e1c6784aacc. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/ES71G2500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5e0cb9b9b8750e4a1c9492c5571d9d7e0ac9a7afc565316c90fa372645e763. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ES71G2500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf5bbb0b12df3e34e1fe4dd2afc983ffad96eff8226c767a7697e8f91e71c7. 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/ES71G2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd55e115bd0be9746d4677eae701e088ef7c6e26d9642ff6232bc20008cabff9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES5151400792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1684d3c814d9e89a2007edfaebe7fe5a7bb6ea8db17c0efb4889c09bd5bbf4. 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/ES5951103683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2580d48da0d44a40a1a3b285135b12d19e0f73dcafc0304f0f50bcfa283d9c. 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/ES51G2300007.