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 0xdfb76375e83b74d9b4cc3f6c7170d86416bc480b23c6fac16094c047c956ca93. 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/5ffdbfd2-7fa9-4088-bbbe-dd2c25ff2dbc.json and https://artists.proofprofile.net/proofs/artist/5ffdbfd2-7fa9-4088-bbbe-dd2c25ff2dbc.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 0x712e49e28c6fc3d95ba3e1c197a65143d78a5a7345a1811e90292e45c66892ef. 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/GBKQU2360935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd44728afc79a1e4a5def93b89642f3aa2cfd19f5dbe90108ba22b44ff34770. 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/GBJX32005116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0af3274d8a8ca7d3f81319a7b9d54329727cd3712eef984affaf4761b5ac4a. 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/NLT2H2300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4cefa8e4e249e984b1e405ac645b066ad118eb2b3ce83a228cc0b067d98e94. 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/NLT2H2300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39efa468e01aaa3c132fcdf3b440cc657199e724f5f6e9edba057a703d4ccaad. 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/QZFZ22384682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b05a09be9c2bb53ef25334b642561f7d556e20c889a580086fa0a60384e61c1. 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/QZAKB2204400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e36dd245fcf1d292144f7966c2c461aa28fb18ee7267b4c94cd62afea3c8feb. 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/NLT2H2200457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47e0215af133294a25441242d45824e3250c4d0e5ecfed5c932aa365cc8015. 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/NLT2H2200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05da9f633614be0dffd4e245195483ab1f5a184a25bfbe8127f5c5c5f28dd963. 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/QZMHK2217927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905fffa8778a4c0561bee53935a68028aeeaa86919d551be0da584f42787a68a. 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/NLT2H2200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4657098af60a28440d156163452045a8149befff4aa3981fc0bb4cff369fb483. 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/NLT2H2200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557dc6609c48f68103aa2c385366ea598bd56779e55427c454b8b227c39dd63d. 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/NLT2H2200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8d92c2fe1407d0b2b8cea85f31047001e47013ed416879df6566cd8f761aab. 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/NLT2H2100588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb6a7116d6b82b8ae9f69a148ae3a77247d7c20ebbb3fc92cb57edb89422b19. 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/QMBZ92194649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7ac0651b3fce8f1386b31df97f125d5564bded11b33946f400fb5cc70d398e. 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/NLT2H2100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4666c0ea9f20a1003f06938680f44002ad876ffbf27ee454ecb33762b17716. 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/NLT2H2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585d7dd8ef9bb4a80110631470ae4ee1e2442184fa5f1884d8d9e6845f75dd2. 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/NLT2H2000367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e32d8d39e56af306d3b611e89482d93fc627fc6febb1a7b697d8635e0a98d2. 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/NLT2H2000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7e926e45df8d7fd2d1cf9ac73c16eaaf25ddd12721251a30193c3e8c871bce. 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/QZK6N2313238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3bc2a6483cf40e6fe1e6a9ab6483e7c65654838addfe6a09cbe0faa57d006a. 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/QM24S1838001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6387c2e43d0a33d40f695b168fae60b197af9d31e8881f0e010ae4d190c4aca9. 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/GBKQU2381314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15d106931d05673d5933fe31ea91fad8ffcb60d35b8fc4c78926882e0a13532. 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/BXBMG2300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce600af68a1303fd5efdd3e35e4c8844f15e88a7172ab9be5c5b709dd5ae89e8. 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/GB2LD2320258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e427033fa1f18713c3d509c87eb9ebaab0e8351f0f6e386087b9860f56a9f2. 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/CAN112302065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558a7618a60161c9c3164a78b20f70bbbc99358f1673a7f5abdd2af18ac4b253. 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/NLT2H2400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4928ab9d10d56d636e28a08b154a39aa65225bb9d6f52b2ec993515f6afa2cdf. 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/BX1GV2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb51c60ca14bd129c1fc3d6f8cd24083c12a83cdf9d71e0128396ae63ddee43. 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/DEH742415154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b65ba5f6de80b2e0c6b9f7494c97f03ea534d942d0fa3296c708f14e90f534. 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/NLT2H2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7802bc205ea8fad8c3787e1ada0694231724d30644b26596858ff9b5652e0bd. 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/NL8RL2420667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7258fb20b15115dc3b1726b04439441303c25175e7c9a6c6351bdcebcd8544b. 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/DEH742432119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb973dd0fa2b78df98adb5a8dec0d1dcb7a5e5b361122fb81f7ac1697cba5b3cc. 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/GBKQU2527382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487557a27bde8968cf97a665243aacd375069382850e4628d4b4d4411e478382. 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/DEH742503153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08096a81f27d29b573a2affb467f90917554a6ff4d1ee79cb32a116a59d056e. 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/ITSV22500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcdf2799e04289233a48fcb83b1feb03a344b182a03c184c1c7bf82db87f083. 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/TCAJD2413967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ce8510860dfe904108a6585ee958d041542298640f8c8061d4af0243f09f6f. 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/DERN42400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fec66542d11104b21d3341d6c6d57c35485f86d6e0df9bc3da78ad409d4ab0. 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/BKP5A2400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8934091d53acb075ae070467bf57753c9034322f04fb629e8db8898a83ba2a. 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/GB2LD2410460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08ca46abdae96cb2e71c8cfabb97bd6b92a18e82ad073b0e06741670a167a8a. 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/NL8RL2432278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc63629a51938274b8b0e2e07c6e8547e9d6799cb3ca6bb04bc24ca6b808f7d. 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/NL8RL2420827.