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 0x5a2fbe2f31ecd215f7ff7b17940feb48c2da606d008f40182af68f147cb84473. 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/750944d6-4251-457d-bf02-30ec6fa8daa7.json and https://artists.proofprofile.net/proofs/artist/750944d6-4251-457d-bf02-30ec6fa8daa7.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 0xf0797803c109bb7122e8903b3e83e8b941708d9a5166a52719124eee7d9ea691. 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/ES5021601041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761ad2b42bceaf4b7a57c3caef0f7c41ae2116ee9bd7c3dc55f32e457dc35791. 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/ES5021601042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b34e8d6cad0a7db1da1b67cc2cf77c0b5b6b89fc6e99689bc371798a987a840. 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/ES5021601043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50e02dd77474c9bcf42745d6f23346fa9be4dff563157a36e26e3ff0c5d44c4. 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/ES5021601044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ac355c0abfe20e708289ebbf4fe479233b641031ed76f54e067263383a5e22. 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/ES5021601045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450484bbcd9ef41050ea1b0812d7efd77992378e3356fd025bcf6ecfb49e3c38. 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/ES5021601046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e428723ff2010442a78a3671e8f763ce15b8637fc4daa8859917420747a576d. 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/ES5021601047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a46771c067dfcfd057435579c1dd292b55514bb23a4ddce11f9b2cfb21c679. 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/ES5021600224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfd43af3ad8000094e9c5b95978fe71e2bf456f6680e41d85a913373484d6b9. 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/ES5021601048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1fe6318cfa48fee0e19e5f52a7d6a706ba569091ed2c8059892669155e6f46. 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/ES5021601049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ddc9f297010eeca6c95c5022dce3f46da43442f0db259fd96596a7bbfcbe89. 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/ES5021601050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889d0466b029cd6f46c392e89a981340b6a1c532a993049aaae1ed5567f7ccaf. 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/CUA0B1802003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b04efc147321001c75c42fd912504b5257b538dbc86759d1c3edb844b75956. 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/CUA0B1802002.
The Real Cuban Music: Timba (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d94a264832400cea008dac2de6dabb51d5eb4cfc0ddf03acc448e8cda8398e7. 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/ES5021600218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f6b37b321cef22d584a6d58c9c30c5b9cf1811a283c80281f14e8f082d2f39. 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/ES5021600219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faebf23c3b65739ffd276b0a3e188c8edf2de13ac46effcef83e4a5a3332135. 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/ES5021600221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fa80e07194813b8a995f5bdb88071829fead4f5e284e63f3598c6593c2e8d6. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ES5021600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a46771c067dfcfd057435579c1dd292b55514bb23a4ddce11f9b2cfb21c679. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ES5021600224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de13e7377ae12fd9d9e165ea82e38e866e5106be372bb8ab66eabc7b4bff610. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES5021600225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3424dbff4f9adcb67fe47f304197e7a75d421deebe7bbb9b32ca45c64f6e8c05. 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/ES5021600226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf182f42dc8bf5afdd00bfe9a8b9f0375b051c8a733438cfcd866d4fe83984a57. 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/ES5021600227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54b20e6a65e7b605112bae9a2a5137abe57cdee1c541a642f2596d83993ff4c. 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/ES5021600229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8927dfeee89cd831a2b1a95edd451d7b03bf59efd611b63b90ae1534c17c7b54. 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/ES5021600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6e6a11de5662356285ee801e7e75431b47c6da5a6cb287bb085310367d386b. 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/ES5021600231.
I Dance Cuban Salsa 2018 (Salsa y Timba Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc5a62c19cfa0150c822d6dea21d05d4046d23d851f6b74e964d7ccdc0600ee. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ITAC21800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe962b3d13ed011938e759ffe6d4fc777028e4b3465c8f4cae0125b88e2832b0e. 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/ITAC21800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839044e1e311629767eafef7e3218df9ad4a439f4baf23d35876f25cca38a69d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ITAC21800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf51390680f1f0a4ebd82a56a65b6b69c18f6495be7866ee4708074d69fd4a03. 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/ITAC21700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5427d90bf5c85698ef3886fc78e206412c1249accc8f560124f1381434cce5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITAC21800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565c864a7443edcf1506920ed01b417f692ab9d3969f543190c39acfdf911227. 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/ITAC21800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7616d3a609bf44ffc8769e78df2b7783c5987bb52555876f826b8f9b47353ed. 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/ITAC21800011.
Sorry (Justin Bieber Cover) - Salsa Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf88704b4faae97a4f19bf8030b0fb72ad699d2b4a8791ee701d50a4fb1366cb. 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/ITAC21800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734abc832f39963865cdd3b550ad5c46d0f26f1390cbb36b1e8cf238504c3a32. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ITAC21800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870751fa31ba3512d8958a81d6a7a79b6c247c1b230729ad43e56de05555278. 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/ITAC21800093.