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 0x1b991120ab5018788d3e41d41342db080d1c663aef4645d23dee122db58996da. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1d620ca-447d-4cdf-b476-83e165c4c6dd.json and https://artists.proofprofile.net/proofs/artist/a1d620ca-447d-4cdf-b476-83e165c4c6dd.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 0xd5faaf26295a5bdc056617542fe5e5f215cb02fdb27017468f570c405fbdf8ae. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:12:22Z), 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/ES64E2302275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a90989b5e804ec4f39c2fb740e00ec2f7cfb18ca8cc6eba0cda6e356f74e00. 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/SE62M2237239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cc6375aecc4896f03f19a546c82f31720f0c8e0aa22464e06ed1a4c93a6bbe. 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/SE5BU2292098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb897387fb4aed62d300f5b3d820b9f2f8963d697acf58795fa7a00fe32d17f25. 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/SE6QE2293386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2acaad1443d5e4c0819c0226f69d5de1188f367778a955167cf6b80805edbb8. 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/SE6QE2293387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444b3acecb4dc2713f05b36d84da5e2f8e40886381b7b21a88535041a1530440. 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/SE6QE2293388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb66008e70d5bb9c08375a02a2b0e677d1dcd58e5c71a6b5079102e994e573e0. 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/SE6QE2293389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27694f25f3845f0ad7b2d02fddaecd1332e35854aec736f4f975a9406c93f8f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:33:24Z), 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/SE6QE2293391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9cc73641b7fbc1c2f1a30fd2515105bdefa9b5864fadfd281f65b6ee19932a. 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/SE6QE2293394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b7466f5edad2c3532f95a0cd27d50126e98788ed9befb764ca72b515f09e1c. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/SE6QE2293393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34e759e6d1074a8dc7a95356e70007cf1be2d8ab4924b8a8f8f37ba039e3344. 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/SE6XW2378258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866fb3d87807889f57645b5d05b7a10592904035ef33196353f1fda07c0abe21. 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/SE6TI2394868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1558473fc4d79df6ee6e0a2f1ee22bc7b5ee1898a2a11aa3ded021edb1a516bd. 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/SE6SA2391066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4a1977bfcf592c53ee7251e893c59c9bcd236f8c0232f5acd948db378b14b5. 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/SE6XW2312129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb828806e60a1e62c3a7237634d205b2a1c8b0f8c3b29078abe224054727ad1b9. 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/SE6SA2340118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed75aedf37a2b6e8df7bc227dfeb746c3ad285f16390c8008cb541c4ed540d8. 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/SE6TI2330834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b91b1931d3a88a187c0282bfc6dca91c48d0cfd99f5348a19a8bd26cda3d50e. 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/SE6QE2365219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3455c9c6fdcc87b02f1285e700859b2c674f649f9edffa009413ee27f22940c3. 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/SE5752369505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f18fe8c1cf0b1c38f5f06074626c20613fac79e1f39e87239eb6edb0cd7e7c. 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/SE6SA2203285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc782bbf5ead46fe44ab132a6438614afe21cbf5fbc05af92c9e3ea6f47b0bb. 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/SE66N2204806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f7ef3773cb34fa49c79558c5e86c20defa0825979fb4c70c58be540c8e89ee. 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/SE6I32287922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81746a4a8a6d0da036705e4990d22e75e5d9d65639987eabc8f744057e99b09f. 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/ZZOPM2228148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee34d5e1470d7a86dcad2ef40d66da868bee41d5e84f02b1aadc5d910ad09aa. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T19:01:08Z), 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/SE5BU2128538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3d69ae437a5ea8771b33f015af1fe803bc4236c465844be77628fbcafc884e. 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/SE62M2102368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a80d994a5d48a9a1ff884dda5ebe5535988a3e78bb4fea85ec2aaa9e711859a. 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/SE6XX2178646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270e99da59fb87799b373268a7bd708c436d7c26f0f42041adc9a9db1ec5b04d. 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/SE6SA2195641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8670010363ae8fcfb5696993577d7bf7728259a0a57ae3619a1dca2a6bbff1a. 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/SE6I32166367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca8e06db720be0f4243b6d5c5f57479ff68ab58b45e6b92cf55a563136e4298. 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/SE6HN2188384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7408772a8c14819514c7f1e9c5b334a90b5c41c2aa0a089351267e8d26d671. 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/SE5752177149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084ede8b5d5612512361261ced8ee4c3184bf7ae8d173a027912e78526c5155b. 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/SE6SA2056198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d52ef2cfcf2c52a66d26fe5e4eeac12987cf79b639395274be55da3192a83f0. 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/SE6QE2073839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6659d2f185bd54630ed43338778fa023c44ef59d4c4119479d3c1c1c984ea89. 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/SE6QE2089064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb2c845d2c50c79cdcf3212528f943d90ef86ccb9db9d8d44b79c6041b90977. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE6HN2067694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5faaf26295a5bdc056617542fe5e5f215cb02fdb27017468f570c405fbdf8ae. 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/ES64E2302275.