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 0x1eaae6e34f22cfa282b068ff0cee58cf5b2a262b5e26eeac6d7764d26e3d642f. 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/8215c2c3-f9ad-40de-b33a-e800ad173963.json and https://artists.proofprofile.net/proofs/artist/8215c2c3-f9ad-40de-b33a-e800ad173963.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 0x788c614dafbd60ce624828485e7012cca82d6f48eaff2703a5a112ed791f56bf. 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/JPM792002234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917a6576dc027b7151b5352a4b4558ecf15337dff7393d7657ff269ef35cb8d3. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPM792002235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1350110caec0382bf543981dad5dfa593cfd98cf33c5a7da028c0d5e3557421. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:10:48Z), 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/JPM792002236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce58077dd46e8a3f6cf3575ae611439e2676388abf90a678559e40d7cbb56c7b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:43:16Z), 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/JPM792002229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2410d1e0c7a1422443ff6802b87aa251cf7098a0af591a8fd0a220872b66f33. 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/JPR752100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429fcd1cab337a0e250ad66a784de96afc609ce7be007cd574cde88267646a08. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPR752100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e67298e60f32753508ad9152e8906001878fc6a360ec2e0f8e2f7be16886f0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPR752100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199577e0ed26579aee357960538376757afcb0a9a82d60715b1abd9aa76faaad. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:59Z), 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/JPR752100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429fcd1cab337a0e250ad66a784de96afc609ce7be007cd574cde88267646a08. 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/JPR752100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b41fb0b77d425373db24506da6ec677f22d743e438c8274df87787f08ebeed9. 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/JPR752100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e206dcd81585a6b656b57330db37d6891a4d02b8f855ba13280b91dfd4c3cf2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPR752100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e67298e60f32753508ad9152e8906001878fc6a360ec2e0f8e2f7be16886f0. 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/JPR752100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199577e0ed26579aee357960538376757afcb0a9a82d60715b1abd9aa76faaad. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPR752100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ba6b28b1bb6c26fe1d3f998a2cab01c4f680e7a992a0e5a80d072f504b00c1. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/JPM792200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da45cd6ba7c0a642da4da1f1efdcc935b94c23f6b4878e36a77291f6fa2c21b. 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/TCJPW2395930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a959445b7c323f3d5b9ffaac1e12244e07952b0e744ae5331eaea229d752d96. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:01Z), 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/TCJPW2395929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4d7e01df637c4c6ae9c451706043ff2877bad18eb8d4280b8fde2b56756dfc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPW2395896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a213a9c8bf2a142e3d3c7cb97f5cab2db1fa866e8cb78ed5ba5fb8ad3c0c5b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:39Z), 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/TCJPY2492728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a56128b275b6a9e55b89a66cd819293ed5d02a2a6ce7f73b4d963f61aaa35. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPG2598490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a56128b275b6a9e55b89a66cd819293ed5d02a2a6ce7f73b4d963f61aaa35. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPG2598490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf7c2c68193ad73f4027b539f03668210b033a47da4496f1c46c059ea5357f3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:25Z), 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/TCJPK2505443.