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 0xd28d408c3a1ac838335a4fc39e8138d6d3913ec7812699a721631e84ddcb09d1. 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/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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa479391708e5c09512dec31acb988498f36a3160c9a89b22688cc8f9e9ca5a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/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 956551 (2026-07-03T21:18:05Z), 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/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 958303 (2026-07-16T16:39:24Z), 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 959047 (2026-07-21T20:33:31Z), 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 (2026-07-20T11:27:08Z), 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/ARF101900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa837b68640f42f0114eafdbfd3908143a37561c279c1885bdfe7157c5ec68f6f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARF101900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb290104542ac7ba2fd0e122599e0275f44acd594258aeb53fdaae935114193b6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ARF102000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa308871cf1d1ead114c97cd78bf5a8ee1779ba5b8d168fa6ff2c5d4745aac54e. 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/ARF102000223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40aef122ccefb3548c8d3f6422b20e781ce699f7c11fcee44704df2995d5bbdf. 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/ARF102000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd1d7250a9612cd49e2315b77702901e44deb603da7863803d1df09bbd8e71. 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/ARF102000137.
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 0x0bc2fe233da3a3b66cd49105429dbdab91d5e642a8b8a238ddc07c4451e36c85. 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/ARF102000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e925afeba22e85f7604a9c88e5f1a41c40411b60b6930a92c1119058af62a. 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/ARF102000274.
El Mejor Recuerdo (Acoustic) (feat. FABRO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081fc3cb88c51ef1a73a4d7acbf2b8f99f507d52095e7930e5a85372e21a8a59. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF102000275.
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 959088 (2026-07-22T03:52:26Z), 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/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.