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 0xc92bc01fb93a42db4481baf1e74b1507fd51a167d6880421bbebbd239c0a0f24. 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/3faadd21-08d7-4db9-8116-0623a86e936f.json and https://artists.proofprofile.net/proofs/artist/3faadd21-08d7-4db9-8116-0623a86e936f.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 0xa236f8078b5eb66cd63b16d847fa1b912e63fb644d17fc566a46f854cad04141. 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/PL59G2200299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3265ae33aa59c41c02530909e172b3d05f98554c5fcabbcfa17a6ba5fceeab4a. 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/PL59G2200300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3a1c842b80af72fa5cee0b33284f94813db4b21925089d37df71911fbd1416. 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/PL59G2200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c1e9f428da186f4c36fadae48e48b3e5ea01d2406949566a94673ba3c5b817. 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/PL59G2000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd4e01aad3b3394ce9a11f391ab830c76afff1b541e05ab50cda2c13fa0a437. 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/PL59G2100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcc38adebe6ff43da95b8f40216ef879b5cc7d0111b802962bff6633ea50d2e. 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/PL59G2200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b67d8301ad753fc60aad67be28802b9b28304e65c27952e21ffffaedf2caf4a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PL59G2200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b51648af8dbb5e6bced5a7cf82adf06ac33c94f5f0cc1afbea39f3acc1a56a. 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/PL59G2200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab1aa04923d27af2857c9e72dcde000e37c94139b475008ed727cf0a0807316. 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/PL59G2200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941e100a2eee10e1e005528990e07090fe6f26cc11302fe8a8e2590b28553dd7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PL59G2200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77773aba49abf56ae0e8750b2dfcac7d56184321208227a743796062ae568d48. 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/PL59G2100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca17dd8429c398d2fc9dfa3188d3fef208dfa601a498f9ac4242d80f4f120b42. 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/PL59G2100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01730d51002bfa0d6ce7c7c2d4c09fadedab0ddf67176909d6ee28cf29a5efa. 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/PL59G2100162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2648b03dab050013aea631519fb0523c61a49144469d886b6dbaed34a58e4d. 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/PL59G2100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391ce267b3a297f6694e0906c63f4bcdc81b017eed0ce1094978aaf8bfb44181. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR59R2083893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d759b7e7bd2e9e08decdcb234caae2c109d37713df95e4e9981cc197de0363. 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/FR59R2064006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8525085be9ef6db5df180bd7fd0a3d6ea65a6c101e0080d3ff2ea0bbbdca0. 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/FR59R2064007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15fbe66dda85b21b4f7c98ebf31a8cbc910e176bd32a1c50959598743e4600e. 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/FR59R2064003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9dc109d34386d0c9dea75fa45c35bcdcd367f72ff95bda124905953ba2adfa. 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/FR59R2015562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeff6802f95283826f1dc8db05d2563b2aa621f369bd67770ba579b2971d88e. 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/QZES91861831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca17dd8429c398d2fc9dfa3188d3fef208dfa601a498f9ac4242d80f4f120b42. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/PL59G2100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77773aba49abf56ae0e8750b2dfcac7d56184321208227a743796062ae568d48. 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/PL59G2100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd4e01aad3b3394ce9a11f391ab830c76afff1b541e05ab50cda2c13fa0a437. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PL59G2100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c1e9f428da186f4c36fadae48e48b3e5ea01d2406949566a94673ba3c5b817. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PL59G2000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d634b8721b663181592ad73fea27e62a6d7767b4924201df73428a91b1529d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA062067833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe877691dc751f13f00de68852aa83f20508cc982787e96377d7d386552d43396. 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/PLC062011871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c694aaff92fd0f0815a9f2d6bbb98697d867da0942afff9600332ae3e743ca8. 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/FRX202037236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb45cced3f81305ffb8ef440e2bee3ba5909c881b727e578c7d89bb3bd6552b9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ71984099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ee7a77e1e3bcf3abff517fcf24fbc5a306301a923a5a63ef327de6dbf6d7c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES91849232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948d3af135d6145c382e865650da684a2e406030d89cb776ed03282eb5488b7b. 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/FRS182041888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b7d413f48d1686062218138965004d4342fcdacf6bfb3f1958cbe3b17ee5e2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBSMU8203780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10be2aa368a8de495874667bf12768ba9e46376635219efb2c0214d339d514f. 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/DGA072168439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7cd2e9f46731da5a1543983e8545d5215439458790222d5ec291a51064105e. 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/DGA072183821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8102225b09740af3bf9538c029cad714404d0a6f79d3d720e80bfb16a8bfbf2. 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/DGA072156463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45abb520269936f67e47b7534612c40f46990591a1a079c394fee714374cb3. 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/FR26V2017606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe35c24973d7dc5e059da3d9d1b5c96187a23c4945234dad4161fa32b9bf40. 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/FR10S2107282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf60cf35f01440dca909a5444f943bd80778bb56a7528450f33e42d39a6dd63. 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/GBSMU8203824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8415cebe9c6866d99d64bf3448a248f4f683473b5e313edecb8eb776efe61422. 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/FRX762027058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243b248f64c79efa324e9eb399919c55e01a158e6b835fb7f44ac7f59987a0ee. 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/PLC061908910.