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 0x87ffe84881f5c5198506c8aad150721ef322c40e9868b134e78c9052a108fcc5. 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/1ee176e1-abef-4503-8cfa-aa913daaa52d.json and https://artists.proofprofile.net/proofs/artist/1ee176e1-abef-4503-8cfa-aa913daaa52d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Star Bars: The Council Has Spoken (Dark Timeline Remix)
In the Heights (Original Broadway Cast Recording)
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 0x0deab19153e408142a6abdbdd67ffe7e585ce9a13ce27782747ffb430fc69784. 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/USSK30896003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8abfc8e79ea6bc1639abc9b51e8d979dc64cccf66203a4653dcbe774468b76. 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/USSK30896006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d69fa3d8480c71f7324f48cbd4263f0afe4e87c36dc89f7bad16ea2e9aea72. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSK30896024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00043c82891a73d73ff7d8c4fb75e4510dad95b992ccca2b8c3371e700133fe5. 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/USSK30896025.
Esperando Pelitos (from the Netflix Series "Big Mouth")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e2c8c1ea2f4b7f6feef44ffebd8ca5a43fcd687093403c17c36ea6554a4fa9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ8BZ2307465.
tick, tick... BOOM! (Soundtrack from the Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bb911dca9ce4d95822d4025f2cf3ff7a21d3673446b7a55094d546f5cd30b6. 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/QZ8BZ2100734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743ae3023d1d48d3ec344a06829bac8015a4f11b4d2adf2303039dcea185ea54. 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/QZ8BZ2100735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5290aee3942389ebd2a6413566d5bcb604ec0b7ca239231cfa4e5174c7529757. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ8BZ2100737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b8ec3981190cf64cd10cc5df875607438bf8237aff84ebd5b6352e7d850c32. 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/QZ8BZ2100744.