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 0xd891df0ef67258048c0286268b17e0baa58d156e071b576ab54433f75deeedc4. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/976ec418-f184-4800-8535-fee995cc0f20.json and https://artists.proofprofile.net/proofs/artist/976ec418-f184-4800-8535-fee995cc0f20.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 0x316a58edbbb0947880be4ed58cae1598fd072e90db0ba25c88c8c03418c75c2b. 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/ESA012558324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e3122b9579fedac5009fe9eab6ccf25fa73b52de4d96c3d13beb9eb37d8373. 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/ESA012558325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebd676552359badffd2ebec0d3184746f004a9f3ae3bf79dadb08a2132fdfc5. 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/ESA012558326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c7e76e770bcb8593cc17e3f87a633d3c914256759fc1fcd45b04a3f8b1f08f. 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/ESA012558329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de746636062ffeb5f8b7527e331ca8e225e4a029a4fc7ea95c8d952eede6912. 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/ESA012558330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad73497d046d699602d4a1ef0b5d044735dec898d396668777177380951140d2. 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/ESA012558332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1579ee6b7d3e264762c2597db459a732502dc97e4c46a32143b6c0dea18953d. 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/ESA012558334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2267c3596bf978781e4829f31ebf6de4cfa2ccae9103a6eb0489d9745f0a66. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:07:33Z), 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/ESA012558335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd592dee81a28c563f3bdaca70779961be9e2702c2c995c82ac82e9eed21d45ab. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/ESA012558336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf011421ae56d2861e3cc9c23c87dd358a8fef6f577bfeb1d7df37578659ea8. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:38:32Z), 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/ESA012558337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa79380d7c98f46b06c8ace1178627b2e0bb4b449774810288a117402772deb. 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/ESA012558338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2c09d3e9d8f47491125e6e9ddb305eb392329309ca8435a2b844b8f68dc8b7. 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/ESA012558339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7172dc940d494dfb440a860caf78bd47413fd4e0a5e90b4f8fdda9a709dee868. 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/ESA012558340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d009cd3907fba458b1cd09daf0a9abc137280fe2d4af8632204a5765604bec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:40:07Z), 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/ESA012558343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc37db6528a52c085bcca85419f0b139c289b4df2e7ff0cac5b9fa8e9a08cb8. 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/ESA012558344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2d7cfb46373bccc16b9b24311a3baf8f303c6f2570cef65f1b0eebf25a6ceb. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:25Z), 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/ESA012558346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafff7e40af4a40a8222d37eaad2f013ca4688e2987f9491d75e208833631b79f. 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/ESA012558349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569e993eb2727b48fd5c43ab6a8c2a3b50c10dcd195b7251acc2bc87338eab17. 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/ESA012558351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91619102879ccb4ebdd41176ab7d7de086f328796416be9a232857ae5cfb647d. 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/ESA012558353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aad38c6d2ba77a83a689efc66e7e1761d90a47d9c6d71951aebdaecf56ed88d. 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/ESA012558355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f5bf62f4e12a4668bc7b7d3a216b50d4e46e44a8043edd19286ed36bbb6c04. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:24:35Z), 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/ESA012558358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa900a99d80e48ce65a456fac7968c357f4f7e2fd13bfbf97b00619c548fd5b82. 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/ESA012558359.