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 0xf9279379b2c626fce3a33925390287c447e395c6e0ff874e441298abb4d3c337. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db6f2d67-9e45-4d94-a3b8-81a9f169acdf.json and https://artists.proofprofile.net/proofs/artist/db6f2d67-9e45-4d94-a3b8-81a9f169acdf.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 0x5e798c84218f56363bb6734d30a42bae170b756077d78852c974c7154032a128. 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/QZWFG2457655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72a6cf2c610a098690c912289827d6c4dc0e49bb975439f5bd1097641262d58. 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/QZWFG2457657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b696185b9756134edbc32fd990ecc5c2a0227d5c6049b79ff9e71915ff4da05. 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/QZTBC2468182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed653223cc0e715ed52b88ae4bfb191e28e6c3a8076864a7e66afe008cd3dc9. 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/QZNWQ2417856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9f7b550056bce2ef7cdebcd506f6becad29c7b7f7603ed87a3834e474d75cd. 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/QZES82583272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60a5450503fa8d1fadf5407296eb095b6ffabe367f5f7fdf16bc4048eccc9a1. 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/QZES82583273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0c69faa8a11c84d802180cb1578bb2f0b86a441e1284f6c5e6e8d67846423. 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/QZES82583274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ffc472ee2d73049cf2d74494f767b5eabd8800413c55c103ae3be7abfdc9cc. 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/QZES82583275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7f8dea266617b904b5f53299965aa6c846b004f874e4710b9785dbe30be67b. 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/QZES82583276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8238e4d1190ff9d71824c279e27903ad284ce83d67b919f6b0c61fde675aee. 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/QZDA42534866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f80f1433b213e5090a99061b6b17afadd82dc6d91e60e6a80b33993d6724657. 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/QZES82583277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04749948d3ff5059aad8563c40839db38f8036bdfc283977d07f9bf88aab44e9. 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/QZES82583278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5140270f2bbd3d15dfde5c4b9d61663180d11c23887ead8ca205312b4d0f1fae. 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/QZES82583279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e87a79c2a24db5c71c278f04c8e5d6a205f3ba94b0366c4526572d2e335d97. 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/QZES82583280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae1426aa1477fdf126ceafaba203708fcc9e306a64cf9ad3c26e9b922113e22. 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/QZK6N2514798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7518d7ef19ded4a3365f9fb059b451d216a2e93a7a99a3ad021d4e10845e410f. 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/QZK6N2514799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f777c714e42783a809de67ceea5974ac948592d6784d9968b876eb86a239c3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN92502556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc35d876bfef1784c81eb086fa98733990a388310ea3883329746d67d5d2ef3c. 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/QZK6N2514800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a78f0175245f92475485c39b0f22ccb376884bd75b1f9dc00fbbb6a7d7664e9. 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/QZK6N2514801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ad6bba5f9b1ce9ce9403874b02e87538e9b575210536a0d1ce2092d24b283c. 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/QZK6N2514802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3350758ec5d363ff985ec86ec9aec9e73ebe77c64c9ed889df8e534a2786acbb. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ7K2483740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8975f55e1ee52a2368b5eb20ba5c42ddbf82a13e77a9a7f7522e99d1a0be23. 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/QZZ7K2483741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704c2b0f7e640f0c85aea7aa5478095ec265dc7d69f5080d8780d96c674d9270. 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/QZZ7K2483743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd07c5c49ffecc4bd66707b6ac22f2820c058d4f5661891884863636ffab2b1. 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/QZZ7K2483746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3682281e4f865e55c932a2ae079e918d81205f77c2be43e675c16d626d32bdfa. 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/QZNWW2534803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088bb3d926ab27136784823472e0371080a6210f41e520e429285e32d1889f0d. 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/QZHNC2568018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f777c714e42783a809de67ceea5974ac948592d6784d9968b876eb86a239c3. 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/QZHN92502556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ce89a36d4759d7d29bb2d219554050770013bb067e6fb304c3d971ba9998af. 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/QZFZ42530974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430a5a4d231a84de0e944dc17e2725db621e0055128f8fb3a909e38b9e4a2aea. 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/QZFZ42549612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436bab07b3a6a80463395d4bc48a3064f0578e4eb19f430fc81309b63cfa8f19. 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/QT3F22485069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb498879af8aa5565da0631cae3dd8ed5032f81e76f41179089bd7f35f1da5c35. 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/QZHN82530363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfd98b8dc7c8d9f3039a85b4a1bc4a5c9cd794877d537650ab7ca94a910bf7f. 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/QZTBC2554977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f214feb649084e9d22a33b9f890855aacf35141fa77f0e30c312701a48e7da. 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/QZTB32570700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178a016ea2f4f5e78c088b4de155a8de27c700cde5f24bdc3ea04a20228bd268. 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/QZTB22543746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf41ee565bfd27f89e68f32fc46439bae7c2abe8801e24fbba4a091171c79f2d. 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/QZTB22543747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3601dc5988d4681080171b0f21127a4c155dc55e49d502f7b5382f674499ed7d. 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/QZRP52586485.