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 0x5247e8fc53d7847a41fac2e47bf9a622041c65de6d8feb922bfcc1d193406b59. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f58053d2-92ed-4796-8017-192611ea7cb5.json and https://artists.proofprofile.net/proofs/artist/f58053d2-92ed-4796-8017-192611ea7cb5.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 0x69e969bff3c4cda83a7ac53a1eb852f6e1895340eb12d9adf58c5eb2b9a41c65. 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/BRWMB9704046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a61c7ccdb2315a507a4f9b96264ebd2e16aaaa6c426a31901f03fab7ef4763. 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/BRVLS9900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd44d1a3551ee48ffbaf54aaf0f420be03582f567726c3e935fbf4b61e1ce1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:15:57Z), 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/BRVLS9900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c6689daa67dfae09f99a432a3a5a8cc06dda63b5e3f12f76e83d1f1ffc7d20. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T00:59:23Z), 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/BRPAG0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff174c23db1fb2e7d807ab4b1df0072eb4326fc015e678556f90bcf402b3f45. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/BRPAG0700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff174c23db1fb2e7d807ab4b1df0072eb4326fc015e678556f90bcf402b3f45. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:29:44Z), 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/BRPAG0700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4923b100f8d371bc141b75d7a06e8b6730c65ef3e7f518ca8b977bd5579e1720. 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/BRPAG0500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ae22c63c094dbcc4f8e3400a3f6dccdd6521ad00300f687302c25b8b97e8de. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRAGL0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131e0b43bc2e5df468f159a446a9d94d6c6750f54d9a5589a2c2fc1e4d77d6c2. 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/BRAGL0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad55f5b1fe521e155249fd44a28d37df11feb12cdfdd7695d7bb03ed25c10de4. 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/BRAGL0600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc925e525c029fc5216d7dc5650c82213051d0245349ab12bb29886021bd40ce. 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/BRAGL0600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c50ff079a4b34bab792cc740b06835c14016616e4f57019246fc22424aeef3. 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/BRAGL0600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf96dd88c7dbc9be27f6dd70dac31d6ca6c9ee5e2b4ee78b432dbc00e3940515. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:32:54Z), 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/BRAGL0600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f381b56d6594a38ae1a7cb10491c0147d4558ffcc7677264da1ca639212fdd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRWMB9802844.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ef6a6b7427f82b50188b766a063b1353aa0dc274dcd4bee045203e4a96cbfa. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRAGL0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c702b7ae7c9ad111072d87c6024c95fd723ffd7a5df1bad462d1f5628cce566. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BRAGL0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9785d6b0b8507987e93dd85f5725ff37d4341db0684c020f833f463d73a60e7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRAGL0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29231cb60400d6320cc6740a7596ae7a72c44a219a2abc3daa6941543bff9792. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRAGL0600006.