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 0x4317fa37274bd724faa816de783c4000bc06c30cdc206d35d45b81c2a681bfd2. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8e9a7a5-4c7c-4e64-853e-867ddb8c32aa.json and https://artists.proofprofile.net/proofs/artist/a8e9a7a5-4c7c-4e64-853e-867ddb8c32aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shining Time Station: The Juke Box Puppet Band and Animated SingSongs from Season One
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 0x13366cf99dbe1b61eb7fba7ac20c05f343f695b46841376535ed3fc35e040fe8. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/AUMEV2339382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d8b61975ece26b84aa03926bb2a3a8daa68435321ee795dcafaae9fb20bf59. 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/AUMEV2340522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6b1cc7f7f516b661aee57e062ea485ba21ae00eeb0d84dd86807d553ad1ef0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/AUMEV2339387.
Shining Time Station: The Juke Box Puppet Band SingSongs from Season Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c032a9d0de0c3201fedadc442fda10375c325148be3a3c8ddfc8d47de0b887. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AUGBT2318411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233052dcf21909080e9af80da471a9b3d74741ed1dce9a337438022f6f4e6bc3. 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/AUGBT2318465.
Shining Time Station: The Juke Box Puppet Band SingSongs from Season Three
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40d558db905573dc76b938843ae8d56dec6291bdc46035b85e3a825b9349937. 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/AUGBT2355813.
Shining Time Station: The Juke Box Puppet Band SingSongs from the Family Specials and Puppet Videos
Butterfly in the Sky™ (Songs from the Reading Rainbow Documentary Film)