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 0x28243ec41172be58ce52433f164e436553417517ad3c8847c54163dc476bfb47. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eacb98c2-2da6-47df-94e4-ea5083e570f9.json and https://artists.proofprofile.net/proofs/artist/eacb98c2-2da6-47df-94e4-ea5083e570f9.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 0xf941ee5e83c54fc6a6ccf17e0ffa952a210e261a8af6949398055dd0b6fc2c8b. 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/DGA092376324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247969b1ece21c50f1a3629b01a0221fea1d59f483bec3d04e71d28bfb25eea0. 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/DGA092376325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913ee56a41e75235b9b904fb88fb81463f9dc67248e1b7cfc5f98dc4740112ff. 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/QZRP52399427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d0a791b66be04b12e16d9e600ea945b8d404c44101062818dcad391422338e. 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/DGA092376327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f8f78671ca4f6e5d023ccda3681d4cd0003b91c99d74cdbe2b587e99884fbc. 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/DGA092376328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c4e9b540a79c8b917baeb163080a8acad345954a8381fd3732b1d678bcd46a. 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/QZTAT2390771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5c558bb11b3f6137d7bde1b9213cdb2c01b65e7a8b2038844fc5ade9355820. 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/DGA092376332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f5e1127aca7cf23b9b5db57ed132c3cf55a4b2d386e312eb9826c10373017d. 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/QZTAT2388756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bedf09d35011d4338264db89271c4863dbbdd049e423f16824e7cf05254160. 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/QZHN52462527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254010d5bf137c5835ba50a873d02d80727b50e5bdb6143c9916fd61a9e9254c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN52462528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3e18005a60000cdb18a3ee33b14613ff6247be7640e956af3b7d52b802db5e. 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/QZHN52462529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb480eed0533c12d5e2f0b522df5d29005b91e1022af95c4d9e3c9781997a8f5b. 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/QZHN52462534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0242cb47dee6b68f394f9984acf6434c98a9a87d10e0ac1e9fb425e41105b54a. 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/QZWFG2331841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84abf41cee0b9bae3550de5cbb1c7100ac31e8bc576f73ba062ddd58f75c69c. 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/QZWFG2331846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4619140d6f9e56f33322b7175ef919083957143b8eb0d14c3a33202339c317a2. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DGA082367933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73b9538ad1008d7825f88a1719d92bf7aee5368a3b5c14ac7dd9cf7443f5c61. 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/DGA082367934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb275cfc1e6c4804e871cef6eea3ff4e54d2ed1da9539cd1330a2af6acc3e9ff0. 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/DGA082367935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd393c827b8c3fd256616169417df6777b3b23fe8f08c793f92525599039af0f. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DGA082367937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e15b37480750702dd898d90072206a106a92eab1b2400846cf561dc917527c. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:28:40Z), 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/DGA082367938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94e71ac604a7482c3396864c5c46dfdfef30888b85adf4cdd70e74701c12125. 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/QZNWZ2300984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7deac1f491cee31a241e0e072b86b8e06d687a949ee2fd566c1b90a3379b686. 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/QZNWZ2300985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433fd9ec5a151d8e27b7a319fb979e99ff2ecfee9ce6e9ae1102d05fe0b7e6c1. 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/QZNWZ2300986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88778e126ef3cb1c6cd3b8a0a32fe50b225b83ef5ce225e6a58ed00cdd875ed8. 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/QZNWZ2300989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0790b49ab66c7e3881f822d012d285ff4600d7c40aff6bd90983debb9cf0c2ad. 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/QZNWZ2300993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac302b44aced4f0c82b39466d51e6addf16c7965b6f0d75ab67e19269c83556. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWZ2300994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9716992d62ee18a5358bc112c9c83c74e127a3cd6ebae7036b05cd76dae674e0. 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/QZNWZ2300997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5161bf202abac3b4e67b1c58ecd80ec30f5dac7151cb745aff30277721aa8da8. 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/QZK6P2379426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa140874eec19a71903cfce09e199e8ad4716c3dd2f667bdb88ddc373054c36b7. 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/QZK6G2186646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd393c827b8c3fd256616169417df6777b3b23fe8f08c793f92525599039af0f. 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/DGA082367937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e4544f50edd227ca93cdc42ebeca9246284d2f592e90281c254f10a442befd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAT2370188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414c6d6e22783f7afea875cca497937040be527972d5f167bdfebe825e3649ef. 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/QZTBB2245022.