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 0xfd2aa7a881992b456ed5220d26550593dc6415c75a6b5e9636dec4a054a1ea13. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8754632f-1df6-44d4-a273-1800bdac2d26.json and https://artists.proofprofile.net/proofs/artist/8754632f-1df6-44d4-a273-1800bdac2d26.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 0xa5c788a2874fbd3272c984d158d22e0ad9e65e841052ffedc7108bbebd246e05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZEQU2302052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92532d03c0d998d8c26142d7ba58b5c9173ecdc46b28bd6499381c37156f509a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZEQU2302053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807cdfc5f746787cf2efe80fe2db587d60acc712431921b59b8e5e9f9eecb1d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZEQU2302055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd6d7d0be0a73c98eb3cc56b70b1fa703ccb22f8d122d6d5064e1f0b8058746. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZEQU2302056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54843e9e3dd57b4b48eaeee0ca319e200e9905e9a275ec900205620f064d01eb. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZNWS2231289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3890feff3505a0afa268c48669eb1f47454f26f1c95bc7e6007a681f723d69c. 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/QZEQU2302057.
i wish u would hate me (feat. Dylan Wheeler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca41b51cd5daec15612b658ebae8f00587a58e85f0635e70de99d2040284fc9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZEQU2401012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2af8dfb6772ae45bf391930d5d3a4608a36724313cc3d5226af6a954385e58b. 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/QZEQU2302054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e723b753cbf0da4e0a939256058403ef799f3da3196d3b3809d642f27a1df52. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWY2158518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf4edd0bcd637ddb44a2cceffec1dd662d8066d729429dbabb46b68368cbae6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFL2141300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147e6146864f47cdd2b9ae2c00a94f10a76cb90175ae53af900b8398300dd5b6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAFG2087427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba065a6dcfc80f1d805dff7fd96a5d2dc8f04c0ac3974b3d3a10ac97fc0d1340. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFC2025510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809c89c86311218495ab611e6d4a46bde3fb508bacf0e4a24bd103d377b057ad. 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/TCAEN1902060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc754fbd57385c448939e23cba8017b0489abf83da17a19b65e9dfa66ea3ce828. 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/TCAEJ1910899.