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 0xd28d408c3a1ac838335a4fc39e8138d6d3913ec7812699a721631e84ddcb09d1. 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/fa07d19c-4433-4ab9-9e55-cbac53ec786f.json and https://artists.proofprofile.net/proofs/artist/fa07d19c-4433-4ab9-9e55-cbac53ec786f.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 0xafa479391708e5c09512dec31acb988498f36a3160c9a89b22688cc8f9e9ca5a. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/DEA371304213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c44207497d242da9936b6629a23f2dc70d18806a135a868fb1705ffb71ecb0. 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/USDY41843812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600caf36fcc905505d2908607882156bc86d9e80e3e76c90cdce98c34effd02d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGH1824689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10142186e1d1d898398e6e324b2aa14e65d13e384140c9b8fbfb995c6bd64f3. 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/USCGJ1815921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431d070add9128217d916eea7b3e2dd5f620816b89a20a0818f8636137a05c80. 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/USHM81705050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa837b68640f42f0114eafdbfd3908143a37561c279c1885bdfe7157c5ec68f6f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ARF101900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b0995960dbbc7d8b82c03bdfc3c2b3f5c62ffea1472e4c3d711e61b2727288. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/ARF101900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa837b68640f42f0114eafdbfd3908143a37561c279c1885bdfe7157c5ec68f6f. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/ARF101900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb290104542ac7ba2fd0e122599e0275f44acd594258aeb53fdaae935114193b6. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ARF102000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa308871cf1d1ead114c97cd78bf5a8ee1779ba5b8d168fa6ff2c5d4745aac54e. 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/ARF102000223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40aef122ccefb3548c8d3f6422b20e781ce699f7c11fcee44704df2995d5bbdf. 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/ARF102000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b0995960dbbc7d8b82c03bdfc3c2b3f5c62ffea1472e4c3d711e61b2727288. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/ARF101900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a1ea79f2040c6eeb5076ee2539d447f26ae58643d87a6dfdf5c78420543dfd. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/ARF102000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83891096463395833f3895aef375246dc77ca21b1f3ff4c1fdc84f13d81d0e8. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ARF102000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66002a969b3a92cc7655a5ff277cfc00389a913b714f8219bdf846ac59d2d17. 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/ARF102000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c40944e7eb38f2e3210486a2c7e51ff257f0a9e00380042a2cd18561d2698d. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/ARF102000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd1d7250a9612cd49e2315b77702901e44deb603da7863803d1df09bbd8e71. 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/ARF102000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458f779105374ccca693934a5534d2e7d31bf0d4250a17db603c71d724a23417. 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/ARF102000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b85b34617ffab4445ec83ea31e5a77d280336d1b6d4f19da119fab816d009e. 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/ARF102000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965623601f6cbea0730cc5429c9f9137f607ad1ef25aed4fc31504f3fe051403. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ARF102000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc2fe233da3a3b66cd49105429dbdab91d5e642a8b8a238ddc07c4451e36c85. 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/ARF102000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e78d879c5ff19cdbcf22eb878febcbfbdda9caa9848ca7f9257aab4296c536c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ARF102000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa837b68640f42f0114eafdbfd3908143a37561c279c1885bdfe7157c5ec68f6f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ARF101900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cc6bef83d1dcc55975f9920463f8fe2aa2f78451ecb1b83614e902a987c74a. 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/ARF101900481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb290104542ac7ba2fd0e122599e0275f44acd594258aeb53fdaae935114193b6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ARF102000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e925afeba22e85f7604a9c88e5f1a41c40411b60b6930a92c1119058af62a. 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/ARF102000274.
El Mejor Recuerdo (Acoustic) (feat. FABRO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081fc3cb88c51ef1a73a4d7acbf2b8f99f507d52095e7930e5a85372e21a8a59. 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/ARF102000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5fb7050ed68617f9488840dede9a991c63cdd115f5ea6e9c73c26f183478ce. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ARF102000276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275fd4d635caec0bc5b8e5cc482057b486ef5510eb6725049e4a83b019167018. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ARF102000277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa308871cf1d1ead114c97cd78bf5a8ee1779ba5b8d168fa6ff2c5d4745aac54e. 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/ARF102000223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd21cdbcea14a7413358c7da253cee7dfaadd366fda2b7507275c7f84eb3cefd. 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/ARF102100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402c65e6c529269c8520ef66aeebdb3ad416cfe20d436fb5c316460c5af6466c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ARF102100351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81712cc3792616ad2bcb0c4c0c964b35bc482c4c331a9eb087828ce609d7dc61. 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/US7VG1820312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65026bb63bec495c30595ea4eae772e11fb77f50cdd1177e184526a306cd75bc. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZHZ41980410.