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 0x8cff7ed9f15ab8a1ec87829153d5b4f3f9c8c73c9fdd6967ef37a348311eee36. 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/485b86cf-ed61-42a7-9592-9df42d97ad16.json and https://artists.proofprofile.net/proofs/artist/485b86cf-ed61-42a7-9592-9df42d97ad16.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 0x6a7144a1c7bc940fc6303d31dfd91ce579b5fc8bc6dfa71ab05cf8776460b5b1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITL600700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2275875349a143bba5a347cf5c843ed4ac1782779142498f50729bb5a7ff6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ITL600700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7961c2050337b0cef9bf05b0916d7abb25f946bd4c94ee2488d1a4b4f04afdb7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITL600700154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c55633b52428bbb0b2f7a95756b1dd9f320e8807e2638a05d337c445211024e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:26Z), 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/ITL600700156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9f10e40765d2aaf6041bb1a43e0f0bf06b40bdc3fb2e1793af728fc9f9d13f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:27Z), 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/ITL600700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c55633b52428bbb0b2f7a95756b1dd9f320e8807e2638a05d337c445211024e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ITL600700156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa6f066fd3e4e497bae625bff178254261088c44b490bc8007d17561237e96b. 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/TCACS1659088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b5c597687856d69fa520bb5fb6ff9acb5bc27b2b06b7e54bf94952fde0863c. 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/TCACS1659089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66c613b08ebca4d2e4cc9f374da9f4f2269b144c2a624b903c98e4edb95051d. 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/TCACS1659091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018295751c171fec97af5ee8fc2471a236274f816e04fd4778b51ab5733593ab. 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/TCACS1659097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf79d3a82871bbf2c1759d48802f22155134ceeaefbd55e7bfaa0bf27c75cd1c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:32:56Z), 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/TCACS1659093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1478299f353f84290362e8d3f22b6cf0bb20438e0091693941cfbabec07d0a22. 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/FR96X2479529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b49ef499c78b09dfa7fc52d348dcf20c2b11d185a1a423361b49bc0457b51d5. 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/FR96X2479523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ca242dd61977bb6b3d5dd0a81bd132995bcb3c0e0b6ea71573faab0e2a630a. 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/FR96X2479524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24cb07c385bf26e7f97f887a58eeac5fa769d145d5b3193b718827c4aa7a229. 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/FR96X2479525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdae42b4b0f9a3417587b57d7f8507af3f8bcc2f2cbfa83e1e307f8cd9858c0. 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/FR96X2479526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321496a8e27fd23a97669d0183fadffc406bbf608a8ca2001f337d35f9c66c84. 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/FR96X2479527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455345298705e8acf2d4ee13b4b95c21250fe5c8f3242989191d455040035e5a. 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/FR96X2479528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1478299f353f84290362e8d3f22b6cf0bb20438e0091693941cfbabec07d0a22. 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/FR96X2479529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dccb3a01e294863fb18076f0529a977023fd4d5afb0cfcb83be0572fd48966. 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/FR96X2479530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc135b68c4a24803c8b7e0c119969b8dc57a35d7271f03ee8e43075c89cae7221. 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/FR96X2479531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee3c8eb4e3165f52841a57fe8eb8736a8046bf4cee8de9d7f26e44696a4bece. 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/FR96X2479532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723cb10ee59a4dbb5bc678d7b08c4d5068ced0bd02eb9cfb847e7c4372a2e462. 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/FR96X2479533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92121b8ec037029558d7a249c4700958580a60c133ca557cb801bf9029a5f75e. 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/TCAFE2058740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cace054c2a3359cdbd8abf2186ffb561a975e54d2df9f9c24247fd3b0e7708. 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/IT1071700306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1d395aeedaa6efd7a4197aee0e1c1da3130eeb3f0a68906659542d2423c829. 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/FRX762119411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84a773d9b2960246b112839aa2b5d4fc24ad6db0d8a1025d01b0875262a23ff. 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/FR96X2313725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af67f2fe2f43e72add258e0a06440aa775753bc25d6e2ce673bb962fc2f8ad9. 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/FRX762255298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc5fca5359466cf859dfb31f9015201720df43a1503e0dd4321f31616ad7ef3. 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/FR6V82313084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009e04d82f84594acb9056ac4a543ad7f7f4efe63e51033d2cd0d89f1f118ff5. 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/ITCV32411901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80654fe090c880f0aa85f3c567250cdba7d8e857948254b16119dc7e9c9e0a6a. 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/ITRSE2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f628454373bafb5101e881d4fccb3b571a101bf070485b727495a90a8cf0775. 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/TCAEX2022027.