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 0x5f39321f27a555ac65453028b9ec3a2e4840b02906a81faa85d263cc7c490ad8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61faddd2-7b0f-462d-9a53-0f15e768900c.json and https://artists.proofprofile.net/proofs/artist/61faddd2-7b0f-462d-9a53-0f15e768900c.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 0x759ff28d9ba3a42eb1305f3fad1587f4963fd7dcabc027a4e902a068dddadb14. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:19:08Z), 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/ATMI51300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da42ed4f3ce8dc96bcb08959d32e9b0c89d8238839d1acea7484c4538b04fe. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/ATMI51300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa122374e1544207974f36a9a4899e094a2747ad0f7ab2018e0259032e26cec23. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ATMI51300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0dac356624c73757c94a74999127859c253de2952a6ae32028d8581513dc40. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATMI51300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcf1ad9265466b2fb0b1d9550bbca3db3d41de4821eaefc470e0bac2921426e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATMI51300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae5e13f70b7e1e1b3917a747ac0d48db6b5bd3a276935a3417dda5259e5f967. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ATMI51300344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da42ed4f3ce8dc96bcb08959d32e9b0c89d8238839d1acea7484c4538b04fe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ATMI51300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8eb307ca8819ee7ed4b464144cc52822faad641e7d57d15e04dde39d9b1c3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATMI51300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500a90244ef5e9774faa4476c867d25e101c0a3e69e9a9b95705aadabbe06a3c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATMI51300391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2131fcf2487ea10572be237520067e305c78f4a92ece028a42ef67b0a0a8c10. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:23:11Z), 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/ATMI51300413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfa3833649811e32887575abdf5c8835adfa21477b9b5dd436d67313437b3ed. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATMI52300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8fcb813b5c7ea7099907250a9525f3aa97c3609889b87306cf8c4882262040. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ATMI52300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8eb307ca8819ee7ed4b464144cc52822faad641e7d57d15e04dde39d9b1c3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ATMI51300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500a90244ef5e9774faa4476c867d25e101c0a3e69e9a9b95705aadabbe06a3c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ATMI51300391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93941585102e5566e314a725297e01f8da9db0c8603f9ba0e2b2e48a0dccdd5f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ATMI51300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f93d1f381e7faf41f0a928cdfd8bf39eb43d5e93a5b6d626d79d8be1d44b38. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ATMI51300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e18130944a89d96578697cd97f25600ab6a9d17236b3a2dd58bd1e47fa53fe1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:27Z), 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/ATMI51300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917721f93a677c1e16f0580d84f0140a371d7d5677fb88141ba839073b4f48dc. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ATMI52400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fb636fd522fff4be38972a8eea0ce7b63893122b6a92e61c6f79d9cb7ca43f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ATMI52400030.