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 0x6d3ba4308b08be922541e5fc2a03a84bfe371c437dd154ba560e9b638d66a64b. 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/ab49604f-b3f0-41d6-90b1-b42f21d8bcbb.json and https://artists.proofprofile.net/proofs/artist/ab49604f-b3f0-41d6-90b1-b42f21d8bcbb.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 0x79da3a34cc7559d4184ea40a482fb5df9876ce7bf6b5ab146a69074c3fba807e. 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/ARHXW2203285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1332217e414d795205013cbc6655d451d8c9864a0895d187c68e2f510e7c8846. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESUM72302713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1258fb0999c83c7b9c014bd9379b580d925d4cf12e028a1df48a3d7d1e93c1. 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/US7VG2363279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d830a2d8c746c121510d903fa121e47f813a0ac9fbdfeeac25836180673c683. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ESUM72300697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73da50c2971e32e6184da3ef28c2d3d9bbe2d9e697e8ecf6ea9aafb7a1f04d52. 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/QZNJZ2342889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7afb77427a52832b7d3615d69e7acadfcf10aec6abfb51a0f1bd9011fae263b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2305592.
R Jota: Locura Mix / La Clande Ubicacion 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cf34abfa5bbbc87f991b668299fceafbab8151203ce01b693f4033a836fbd8. 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/QZ5AB2393585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487d99f8d15e9faeb41a244bfed82b1d7715b08eaa7b292528c16d250afbf2ec. 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/ESUM72200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27694901d9f64961d6dbd738770963ac521610a986fac83d4ee067e54a0d84f8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA62294586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1678e7d579ef5ca3014e9a380cd3c2f5ca6d0434ccfe294202f5ac0870565d. 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/ES5702201235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59f91647f5117c833bc2634a44974dcea5c701f20f6e95e51784e7d4e914015. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2301369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569710045f28853359935e1e68b4e5f143926a619869a1e01092fc12a5c9f278. 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/US7VG2458030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b493b745fb5b7ea6eab1d7adca3b424104f8c72c097a62dd77736107f828b42. 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/ARQIH2291130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e5828c6eca39b4cb0768175b58fa170096b9424b5d09f845b2b5bb16a99d36. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYB282570870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86b2f0f1d552f29ee7b4a70324b80ad8d307ad5f0a61a8c640deb8ed5e67f0f. 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/UYB282499451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7869f3f178db9de9adb0fe4a0fda3112e7f5cd4b651ec9d35bd30dafd4aaf03. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYB282463161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc988c0c0808ebf0a2f8ecccea2b5acf64d9d00027ec47321d2b155a20aea2439. 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/AR5UH2400877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71372a67ba7aefc498fb94580492f6d4ce8af89e911bd1c12d2245bd125e7b62. 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/QZTVM2489669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b8358b289837b917d19095c451d84ffc635a87698beae7f865c911159471bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYB282410739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62602ebd8b83f045a30e8bdf43b9b245620792daa646d03f4fe9de76c54a4da. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARQ8R2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fbc8364f177afd9c749ddb7e79f192e2d359d4f10bb76936d0738bef089039. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARQRD2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e25e5266d339d7e76bb99a83a11230efa68d83d03987785c91835db6a2b27a7. 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/ARQRD2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55866a439d8a9ecbfb1cb9c780da09798c522c4b9b8cdbe5398f18e8691aa823. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMZ92468399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6685faf271a84e673655167e2c6e96547af0dc65b321ddeab048d2b7687f9bb7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2480243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1278c39c1f21abf89fa2e5e8af74099d61956712a3c4c2fcba34d0a004fc4c4. 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/AR5UH2302237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb536ff9717c1379a69be6195c9502a0a1295779380bb5c63c206cf994ffcc96b. 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/QZ5AB2483488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156cfd8fba0d742619d69374dd791234fa0ce21da68aedf84ea96bb6c45e32ff. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AR5UH2301240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f4b2aba02e3dbb6690624508603dd4cbed1618193fcfa79c80f426d42e1b17. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991040369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2ffcbe764e792063ea50d2f4c3e3dc5b9508aeff48ff610450bb2f69979b6d. 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/QZNJV2391100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5f9917a2e6efbe6e069cc21f05e5b40e3f928e5510b8d43210afdd621c4e8c. 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/ESUM72301592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec254f940d8903af2913e58edb1e0ec586a178834634b39e53d390bcef15546. 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/ESUM72300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7acc6c9d67cebaedc9f12cf7c2ef80674ae32154bad78cdf5e08b57930f0ab. 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/UYB282217014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa096facb926908ad7c72aa0612b9c4686526c3acb315a6a397d11e9cfcfa6c14. 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/ES5702201924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530d0000f9107a23e0e357e31140dc69f8effcfea7b547f46f59f0789e6ae07d. 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/ARQIH2291423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b06b74afd083f157b776f03520d04cf5f2b1effdbdfc6d5809bb1f8481d089. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5702201667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74995d8fa910f54b85051bd344a3260071303f8260d4d60aaf7687ee7883c35a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5702201458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6169c9483a3c215524015516adda4f7f33c3f61a0c6eb9b7e0db555ad813b2fc. 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/ES5702201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30ee05be1a246c87ea47cec1bb5fee4c02d8aa834c6b5dc879a74cb3a9394d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9L2346202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0da0069d20c7a60ad2a44c6046135a8110ce7403ff6b35da3084cf703e4c77. 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/QZW9K2337909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6531915cb123bc482aac760ae4e08e0952a0cb1d7d2ffb2accd4ddb6931e68a4. 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/QZHZ62293985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845df00f3d7089b72980777d79fc7376bcef689f47dd0469ebbf0fda1272bd21. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2412017.