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 0xb27bc0455e8d60f39153183c1ae8207e7edaec0b0709a71ce789f7b1361e2190. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27562918-7f03-4b1f-85d0-99b6cf7f9839.json and https://artists.proofprofile.net/proofs/artist/27562918-7f03-4b1f-85d0-99b6cf7f9839.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 0xa76cc2215a560f14aa54d7ede8a3d75fc95c94b196e2525dece4a532a53183c6. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:33Z), 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/QZDA62544923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8b770b0579a478303759c789f65bc399d5c67acaa3a78f854adee32120600d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:50Z), 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/QZDA62573798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942c01e8585e690176f93090763da7cff99bac5e3b21c27d4e8f42e9cb6d41bf. 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/QZDA72530814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706c5e0620623b802709e997a93b2205c31bf1e7c505bdc1926f36a5561758cc. 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/QZDA72530798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed2e4a416d3edf9773247754765ee6b3eab5139f93838f2dbffdd3e0924b9d8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:39:30Z), 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/QZHNA2540098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cbb81339e5f3a10772a467ba843ab9b7982f3f4c59676df5266cc938e50c3f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:17:16Z), 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/QZHNA2540054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7498a32c197c5702e2f9d74df7b9252162f63f78db451db29179586075b78683. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNA2574932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409b147551b46941d0820959f9ea86e82666d3fb136b9a27699bd1be506adebc. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:51Z), 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/QZHNA2540027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9596bf9064e1356d1bbe079e02b486261cc4f6e95a8ce8b6a2bad90918de269. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:57:32Z), 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/QZHNA2540101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b05206cd3d939fb23089417a9ec530f6d66b7238e934b338d352f66ec8adfaa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNA2572495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9834f008ca2960c32ca9633e58e5760eef561cdc1a730083c4764661823d4a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:36Z), 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/QZHNA2540107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afb34cd2b959e78ded6f5e88112e8b8eacbbe183cb6c33633f7a34afbb898f8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNA2540069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cce824c9db6a80ed7ecd75cd6f646fdbd0f556af2954ce170aa38eb65b7615. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:49Z), 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/QZHNA2540099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c385d32c95b92a14ab7a4223cecb7a5531aa9e71479dcd7782c3810eb9fa8d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:55Z), 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/QZHNA2540071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da586635f5cf05d0fa59c67b8c5a68306b6007dd4fbf666e843cd2ebec29b72. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZHNA2540105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5a6a3fbee51ec49c5b6377b0bcd54f2c47b3827bbbc669eff29862d873442f. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZHNA2572494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc623f2d0bd1d97575e3df85b683324e3dac92cfb48027d614d580f52140f2f71. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:56:31Z), 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/QZHNA2572500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2532e24bdb609265861d115a556bf52a5764e0ab3050a3c062700cb016cefab3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:59Z), 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/QZHNA2573611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9398acd7804a10bca6da7158b29c0ca0110cbedb992c9579f1e69be576f567b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHNA2572496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b0003ccd4b7ca7acf5cc38618e5f468d230f9ba54245d8f996ea042a38bcdb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNA2572501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c09443b9981855e4aa7dc9277c50d0765f01a372a4b51a3a23df3feeac39018. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNA2572510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70010ea67601a282ae11ae2e832ddc475828d97859d13b72c7239b56f248b3a3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHNA2572507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4afdc39e25831f742a866a46d3e519e124c849cf765fe1beee684aa0a7b1f5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHNA2572498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5408a95d4d247273e8ad94538bc73d871bde9e948f3e1f5d43bf87e8b78b1688. 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/QZHNA2572497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce98a488e5388953bfa962429a6e79a57a771a8b1ae85d01dd2b32397878e809. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:12Z), 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/QZHNA2572503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196ff52017e78843f07438f83cb7475dd13d3f087589dc3f37800578d3a89f78. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:01:00Z), 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/QZHNA2572508.