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 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 0xbe0e7b2417fb43181f45efe5eb5f3d00cb61edeac0fd9b15f7b0d8b135e22ac5. 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/d1da1ea1-f0d8-4f66-a636-12667a44f087.json and https://artists.proofprofile.net/proofs/artist/d1da1ea1-f0d8-4f66-a636-12667a44f087.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 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 0xd40790c19d9b50ae923a04db402f3dcebe0505e86880ba1b802c67247a024f64. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USE830927360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087b2a0475588b8cf5c7d7f9cdefbe1e57bbaa6c3aaca75be26fffde65d55ce5. 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/USE830927361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58afa7e15662fde98ce9997de2de25690e29f907cdd9768faedf0e471b80f9ef. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USE830927365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbba29b798a0ee5919bdf8777d3460c96f828e80859085b635504d0dac8b3f5. 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/USE830927368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bc757d9ddb144397c2e81fb4e5bfb3e3cbc527c1c5301bccbdbddc3cb8d3bb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USE830927370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb35b0b7324a907ded76f7551357637a2d57164cf2c27e700a2409a798641df. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USE830927689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa4b9b24ba7597f21900b3b684d677555b72ab062e66008a573507b58792f77. 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/USE830927691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c323f9d891aed422c0fc12094b1f8ee4dc79e04c8b875d45183e3ee9d1cdb9. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USE830927693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b71030d27cfb1829b5550f94c188fd423526127b6bc53c45f1a9415d73f8eb0. 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/USE830927695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9a838153e5e2e5b89862a80ff2cf315366349452cdbfde299947744522b5f8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USE830927696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8e08b02b0dde9d8c0c451d4092e0dfa9f23268831ea568c328881976362856. 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/USE830927698.
Bow the Knee (A Cappella) [feat. Ron Hamilton]
Something to Sing About (A Capella Remix) [feat. Heather Schopf]