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 0x13afaa614491dee0a08b2450379c5914de37e07521674d1dc0972b54eb83c767. 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/34c89c69-3687-40be-845f-d5fe08b5a3ab.json and https://artists.proofprofile.net/proofs/artist/34c89c69-3687-40be-845f-d5fe08b5a3ab.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 0x91db767f98dcf792c9273e75c9a9cca4a44180d5b5c5142db44b67abfd7d29f6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:50:44Z), 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/QZNWS2213100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2978a71124014b3c41a641294580e0feea7dcca9e186f28a12d649854acadcb7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWS2214133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740aa8bfde82b4424fb92b32ee59e3a4c177b081adeff725f27ee509a137970f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:04:48Z), 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/QZNWV2283383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6c1d91848ba98ccbd7b1d2506393a152fd6c0f4f7223b9c6878dc8bd4a468c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:12:14Z), 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/QZPLS2289402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20adcf30020ed503d8d29fccccd5c9ff6d6d168692325e6079ed759316da34fd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:01Z), 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/QZTBB2254826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e338c96c27931f528e96a86e15d9100941a2a8c8bcbb3ef18a54b8fac92ced. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZFZ72393103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f6842438b7d17c2969ec9462ebd2402a03a2f7b5c15965509b1f7f0bc3ce3f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZHN72373348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d22e7357c3ff8846bb5ff294a6b52cbb4c0a4324c6a70afec40d4cbffbab93. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6H2370474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7535b38a104f6430329db1da96481e69224a0c1f23e7bc1db3bff4420a507106. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZK6F2380787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945678f3d7d214f93fa4189e4d362135e6eb4497dc1b791ea8be2730eef63ee2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMER2399882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436e9c20b3d05b4612512f72184959b73094342acf6b53564da8f3d8637a648a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWQ2381490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196ea28090fd9cf43ab673dea5e7019e9cc731be52d65536590c7ef8b3776ab7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAS2397493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3abb2e5c485ebc51515a6228671208661f0fc0a7e95ca5a651533b2527ddca. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTB72326810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf953326056db7ff42ad899836b988f016d9d68499c0bdf5b7e5cb805e195dff. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZTBE2327347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90fda0cbe22d1d539ded3b6b41cdbf145e3cf45235bfab53fb80cff6ceff517. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFYX2479567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09cf470a578bb5fab8c89afcfb4278533d439090b1f794db01ca46cd7e7e25c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:20Z), 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/QZFZ32446624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc386eabbd8a53b7ddcce3f30c8dae3794cd7eb9753794a8c5d2ab58dfc87257f. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAIJ2446395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd36e4d5ebb00183d539b66e6a8390ad9dd326e73f036d6a2c0ffdddcc09760. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAIJ2461940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4141619f1a07ef95a87bf2963d1f899592d7f9588bf848810af3b625a63b4692. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIM2459519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbccc43bcd493ff214ff1e85e9daa1db316277871b7b0ce3c59e364898311278. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:24:22Z), 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/TCAIM2444161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705b534a17210cb892ecf7aca66b9b891933dbfeda8cbfd86bf0b539399efee3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:27Z), 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/TCAIQ2475725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27ec861f77a3316ed325383b1ee847f217a1c7d0797d87950ed52aaabb5c3a2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAIS2491593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9e20012a8ca17051247eade9f68190ac30a3af7fab51136fcf0b8efc685d01. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAIU2490425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4748499b76cb4990c289374fcccd036a43cfe2d3a4805db4e6ee0545a9dc80b6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAIY2436742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a04889d6f5d30224d27149d163e869d8eeb066a540e6af7964fe1c3911969c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIZ2491225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3773ca121d5cea93cdbadca26e545c6963869718f12ac4dfa74b87bebcf025e. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/TCAJB2421976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff555019c2abbd273505fd770128595d670a26830095df3fe0fef8ac0363798. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJD2463059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67388b3a9b1b07390b4cdc07a6ce3cbfdc7164b0c1a6e6f8f2f7a54297080566. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TCAJE2511244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596a1d303c05f8975a86535694acc3c304b9269df9b5c4c66f3edc91d45e339d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJG2561905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1f4ee56d64682204240171c62a5eddcd48141cf9e5e068dd7b91867c01bce2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJJ2537361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42e48b7bfc39970e0220cdc6cca047a0b8be1cdbbcdeeee207af4a3b9a53d22. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:25:42Z), 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/TCAJM2521643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47453856ac50c816367b1377d9490ad406738454674ceb3393b6f57409d63a91. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJR2547375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd9fb21ff6e7df78c3cbacee85bfef375f091f4755a2584337105eb27e55b3d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJT2527196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aaeb89cff3693f005b779d42f5e8ff30ecab023ab54e60cfdbffc2a3f6b5ac. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT65Z2544070.