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 0x53b9574f7ba7c1ecec8da599c64d5a9dde2d7c078724db39d2ff28eecf4384cd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7025d9d3-dfe9-4560-9879-37f4184a9b71.json and https://artists.proofprofile.net/proofs/artist/7025d9d3-dfe9-4560-9879-37f4184a9b71.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 0x3b75cf59a6f4677fd74353ef38d403cffb69d8873fe85bfc3b7166ef4a490170. 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/ES71G2339272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad772f1c76fab46636fce7aae2f55e8c304e4a2540d0197a9f74bcf7016840e. 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/ES71G2339273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f233db154258bc29917b8eb6e22a129fed855716e10112633b7ed56b7a26092. 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/ES71G2339274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53400182cc12795731fafefee4456d4652cbbe10e46126a2cc3bdfdab488b4c0. 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/ES71G2339275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe47ee4fc27c83bbe58642a3071cca13499cdbd71c0f2df138a80531b47cd94. 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/ES71G2339276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117c5760c8acb1c3b8cd91f085b57584e48f168f0a74ce9acfef30509f19255c. 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/ES71G2339277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27b0cf183188ade33e65b406b31a290680c602326083974d5588fe811ca1f7f. 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/ES71G2328534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf06a3ec2e9e9d17a7d3cec52a8d314a0a4c833a9440d8731415be6e53a0441. 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/ES71G2339279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a21aa9d3a6be1d534a8d26eb48eacd277b813ab4e1c09092436e2e696bc897f. 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/ES71G2334187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be5882ed0121281f3cb0bbf366008f59925d09e7b9bd42faebf095f6851a8ab. 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/ES71G2339281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911bcbae6d8c0fdfdbf92427ea03568a8e087b604059c4042936d072c1e6db55. 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/ES71G2330483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d79f11ef26c0226979e6a6019f949fc97c5cb7bfcf271805499eb7894affd12. 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/ES71G2337528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8db949a5883eaecf13f3291de7c5a6cc9ebdfc6a4288c10d000d2ab8555e8cf. 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/ES71I2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e449e4326ed1bd2443bb9f409ffcf549dc562b18747dc81ee724e6fff63d61d. 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/ES71I2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031149ad331a92032aec8c34f3637525807fdcfdc3dbf5f03c67ae107583bcfa. 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/ES71I2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bfb61209d4c4a865f4bf25283611fd2b44a4d3d74f16163ed259a135b8f8ef. 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/ES71I2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec2027f2f77afddfe81bd0214d2e371c72dd64dd1a400c591a16c1223b1617. 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/ES71I2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bf0253abc56fe77e8becbf3e348edfd48c7bbe3975ddce99c447c0c47222cd. 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/ES71I2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8ab26d00aed8716f10ef26b6e06c8888bfe2abb0404c176e746f4280e1d54e. 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/ES71I2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435a307518d893b79ae5dbbe0dcdfe10a507e2a7b265568b95eccb08706f9134. 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/ES71I2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6200c9716c13980da93db93a1b76a7cfc7a4592dfa0a09822a618bf4bf2e87da. 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/ES71I2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aaf1a968fdb24f9a6d26ac4ecdbfce7db2029959035742ed5e5f86a3e82c4a. 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/ES71I2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c1730d981c26537687d8cdcf599f7f3562f520c05365bcf82b08205e767954. 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/ES71I2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7db2514d5895de9a1778a51ba1d3b358c3ea1f2b910bf4e5ccd4eeef49dc6b6. 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/ES71I1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0a8ef9e76cdbae177e73cf29ad837eeca762027e989c1c27608fab124333f2. 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/ES71I1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b2989975c0d622bc7fceae37b135d1fd792381d055fe5ae7895ef86e37d475. 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/ES71I1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde13a35204ad8e223b5dadd45cbc342b4f076266c2dbf9ae9fdb17ef0f6a12e. 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/ES71I1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7219cbee0670f6dc3997158d7dfcc07686ebb00afd295c54190d7fe5c2f2c3a3. 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/GBSMU1933464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a278911d50372299bf74bbfa290031509d7daa6d1e6f47adcc0a4223b07fc5. 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/GBSMU1933465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b926bfd6894f93fee9e2f2fde15f7147be4f8ad346b22fab6e4ea14fe8a38e. 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/GBSMU1933466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd634b2242091e4b34e8f582353c260007a73b86bdced5fe42bc0e1538da7eea. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBSMU1933467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec54ecfd9305693dc9cb0a068bedafac4f015e0c4d7682aabdda19f5d9ebc2b. 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/GBSMU1933470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31796f31a4a398a8d14ecee8845901afd790c64eb9afddaa1e6eb640475a450f. 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/ES71I2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c5d8cf8e6e414d40cf60392481366948a2d1f451dd0478157ddeafe35bbd6. 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/ES71I2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1640f236ee93cf421c5c392c26400c9023051d9984b8554e4bf33708137368eb. 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/ES23A1915501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a6fafabf1b597a703ca4523e3cc8140f2e278953700017c5f073a29d4eab73. 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/ES23A1915502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6360344c96a95699747f6f4fcbdd7f765a788ed5c7c4315c9f71df11b249865e. 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/ES23A1915503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872c3380c12b1b7b8341f2090ef395ebd36f19399c15b6140e2d34007a8b8e3c. 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/ES23A1915505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bad87239e0b1e5ce43710808b93351822441041eec1077b18b91a85cde3168. 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/ES23A1915507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908270cd303d5ca6155aced803ecab24604d5e6d0aed50440f83c4f7b3251c7f. 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/ES23A1915510.