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 0x454fe0ecfe02e4669f7c89ed5f4de0333960d9268f2e1637f4c7fa5673ebb637. 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/fb24b972-7ad1-4e26-82fe-a7b88802c54c.json and https://artists.proofprofile.net/proofs/artist/fb24b972-7ad1-4e26-82fe-a7b88802c54c.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 0x60e1e45a5b47ac48fec4dc2010c1a7d10313fc8fc82939b63fda4e41fa531d05. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7S2563951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82cd0ba633f38ca5e97a4d098979b09c828ec306e5ac50ec5ae186816f53cee. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZZ7S2563952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3156d719634c079f235ae98025e20a3eab1cfff9a79d692639b092e766de89. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7S2563953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c9c2976698dd80b8c27295b67da59ec1c60090c241d674cd90f55d5fa57227. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZZ7S2563954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7588eabd98e9da81498ef174e8b09d637a5e9adaf18546f1cdad5dc763f7cb81. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZZ7S2563955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3876415b6a7c843e917fa42e9600ed2184b36b7f92171d0298e21aea60369fd4. 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/QZZ7S2563956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edd27fc3e8b798c951d663663a0ec4dea4ea78491d5fa4ba1c17b7fba4e3c8a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7U2500511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f7fb449b36adbe7d1543f5138f9a3085b19b6cd14e9226822568191c622cb3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:52:08Z), 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/QZZ7U2500512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f00f0a6f3d745fecd9e2f482ede7b04139644587f456e6e0022a81c512af00. 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/QZZ7U2500513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73497b8c86fb57d235d10ca6a7b7eaf1bda58dc3beb5c17facaedb5171c0c227. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7U2500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336cb5f033671e0131c5aeed4b12a13969a2a522460fd1654c4eda8e9f99f8fc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7U2500515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b9429cb7a79a9388b1f6334c4c7b8099b06eb0a714183181ad9e6dc07ccb12. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:33:51Z), 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/QZZ7U2500516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec6ad92fc859799ab016d5a9b0a2608d81d09a37e51a946ed5c5efc73f89846. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:57:18Z), 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/QZZ7U2500517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb15f472a3903b9c8288a57415131c09b85dadf7a2a84b6fea1063d34af56a14. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:53:33Z), 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/QZZ7U2500519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afa59569f7055e7ab71e64874bef664902629df66e7d4d5a3d428e56c6d108c. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:10:51Z), 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/QT3EX2514611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66916d7866eace00ca720dc58bab26a3f943746c8f42dd48670042eb47c18e73. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT3EX2514612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170f261478e4cdd84eb45c908379e5351f03739363af9e189a9b4dfe8e18ca81. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT3EX2514613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559d0e7d44e0b7ac1d2b35afe75bfed169e083c0c128c299f608d39dff505a01. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT3EX2514614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef7527bf109f9e1e97a7a0cf6ba2a4f92f6e3229b415a26d6aa755d7cf42595. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3EX2514615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bd7b0dce8d2f083d3a4722a45af8165c26a9cc4493c09ddc1f5013d839d0f4. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:53:49Z), 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/QT3EX2514616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817d9f42213916ad36e60aa5aa98876f62eed760a2c343b04be6965cc95514b1. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:45:04Z), 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/QT3EX2514617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed9b38edc86b9bb614bb9f5e659a5e6524dc4260085748c1d9dd85ec1aa6ce6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT3EX2514618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5c799336ffa2aa1b510f51391cbbb93c33214ac484f87e4672f3ecc13e0123. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:11Z), 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/QT3EX2514619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8530c0294b677f427161bda6fc3271fa0551fc09c529f02dfae578ea2ceceede. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QT3EX2514620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9ada88490aec4e4aa047162abb6986c879630d2d48c3f1cbfd7bfa2aa4c63b. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:25:11Z), 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/QT3EY2535635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894359df3fa0d93581585f617dc7061868ecb925a7ea2f4a709a96c00dfff4d4. 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/QT3EY2535636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02b951d17e9c1c0beebcbd999e6306831fa0fe8966a8ea29bea2656fb90359a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:48:59Z), 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/QT3EY2535637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6d82371b2e1ae4677c895f2b88419579c7ccb7f6960196dea2f30bf5b4c588. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:43:10Z), 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/QT3EY2535638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e28ea556d6bf0ae1c227c304633c35c9039d2fe8122f42d95eaa02627d9401. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:24:06Z), 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/QT3EY2535639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a93e62d53f80935f5fa8742882ab6d5c0e17b68efc1cf87f0d457ed97142f87. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3EY2535640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f2650f46b4efc8116acec3813a8c9c66d8da7e73f7996b9234382d7c2c4a56. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:02:37Z), 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/QT3EY2535641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d3d6f41d9afc6551a16d07cee78cece103ad534f02ae8bd818f373ab82bd3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT3EY2535642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90167629d993274a41eed6bdc1e06fdb2e692fd69bcf60e1828fa06819132033. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QT3EZ2561312.