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 0x993913e15a2eb3d2247b436a23144b135a951a7e162bf74f2ba25d035a7f30e4. 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/78811263-dfd4-4788-bdaa-273710d4da38.json and https://artists.proofprofile.net/proofs/artist/78811263-dfd4-4788-bdaa-273710d4da38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rhythmic Reflections: Tunes to Soothe the Soul
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 0xd15b234c1b6b93f1ab55c75335b793b255c3362569a8d1712cbb8655b0671c45. 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/DEUE22351538.
(Loopable) Evening Shower (and Garden Windchimes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6a1a0c8a9b33f37a226fd4c17109d44ccb0d095e92e2e1860b332866db53fb. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/SE4RG2304959.
(Loopable) Thunder Rain (and Garden Windchimes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ab5e7d90a5759c6e9ae0d31a9a2acca3d23d6f62fa63db637ba2a8a2bcd381. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE4RG2304957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f029ec8a302489444b3c356e4ad8c930361103155177314c11b953fc9f4463. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6RB2202904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e12c9ff3f38bfd796b8b97414141ddae7df584905d28efd9ccf04192991eb6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/SE6RB2202905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a7e42e75468478f0b58ab85f7703d1c289a3eea24bee121259115e258b28f7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/SE6RB2202903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0807978426b8fb405d03a87e3667e115154c6277b107b9c48f8ea2bd21f4169. 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/SE6ZX2117801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0a42575a5a783d3053e82b277c6f7b327d8f5de9e4821fb163a06694ad8c50. 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/SE6X32110401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776e3db359356956866dcd1a2f456dcbd28e9af53d2d910fadc0518477939624. 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/SE6X32110402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72227a2c04bd1dbc1d52f776d788768ec241ea8a9c67fd76e975059094f7955. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE6X32110403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c0424ebe0419d4df696fbf24219f725d42aacd497f86b3af61f9492e7f20c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6X32110404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ec96d0e7d5600604eb41f87927e7637c96b8aa44991af771bcdec9f312c578. 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/SE6RB2185104.