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 0xe14c6fde2531031efddaa54c837379800b9401d90086e66f48e57c033837cef3. 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/683f0fd8-92a1-4cb4-9f8f-ab05027b4945.json and https://artists.proofprofile.net/proofs/artist/683f0fd8-92a1-4cb4-9f8f-ab05027b4945.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dogs’ Rain Chill: Relaxing Thunder Soundscapes
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 0x3124e252cbd4d236dcfac4a44320ca498f47925ecf51ff5b1d56e7a0405548cb. 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/QZTRX2402554.
Lofi Dogs: Peaceful Sounds for Furry Friends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4f806fb53cf3f613cab124c65ab341846e5d017be1e3d5af21eeed49fe3855. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTRX2436888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7434fd170d01d080688fb6026b0b2b1aeff08c14bb231ad5e85b91dc299056. 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/QZTRX2436898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4165360a84f48fa28d2b5ade75ffae6ce6e91684de75b663521c283fdef1494d. 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/QZTRX2436906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a861dc7e542eebdd4891e99e5ec22ece3d0548cf60e62d74934575db0afdfd. 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/QZTRX2436913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00cf5b2871de404a0a1f407cfea9936b245809c7b4589629cac8c088d1ba871. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTRX2436919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae9928825d0dd1af6fcc678a356703ace0c4a8cf7e628f502cf5e2d6bfff738. 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/QZTRX2436926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0016566d3598ded44ef2926d1a7e58a5d1e752ec8a6a60da517bb661d74a9a. 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/QZTRX2436933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d442a947fc0d9aeca23aa4096b5ea2f5d860eab7ceb7897c69700a064885b1e. 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/QZTRX2436936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1b213e4df8839dc53024768fcd41e6472561ba1eb7b32a737917458641da7d. 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/QZTRX2436943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f1d16d75dbc8fb13c1106978fc629ae170e182249e1e698b7bb7c783ccf369. 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/QZTRX2436952.
Music For Dogs: Calming Melodies For Your Loyal Companion's Rest And Relaxation