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 0xc6f5a9ad04837032c933cb54e1e6eadf338ad4cd18c4e813cd63e99f0716cba4. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f139762f-3565-4840-88a5-8c1495a1e0d6.json and https://artists.proofprofile.net/proofs/artist/f139762f-3565-4840-88a5-8c1495a1e0d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ghosts Just Wanna Dance (from "Club Penguin")
Club Penguin: The Party Starts Now! - EP
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 0x3d38f4aa2a61f1bbf0ec84b0e15a8472438739d8d40c5bd5692113021d4cc5af. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USWD11263948.
The Party Starts Now (From "Club Penguin")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356d4ad35df32c69c41f7d89c80b3b07b6f45fb93320d7f316343522a0301763. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/USWD11263075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3af1ec34cb3626bb5f53da26f22214dfca96be6a39a9b7b61ff35babb0f61e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USWD11263744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c00c6e7ea1637d6c412bccfb0daa9b7432cca04a6d9a93a18785f8131fde48. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USWD11264232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f97c5936bf58c275e5a38bc5d71fbec0fb7d3ef0ce1cc4828654190112d80d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USWD11264672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74445cb12dacaebdf6ac87ffdba0173d9a1ceb4f463b0125ca19851f141179cd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USWD11264673.
We Are the Penguins (From "Club Penguin Island")
We Are the Penguins - From "Club Penguin Island"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a86a480a1adbedc18b44990ea75f470514b0d0a22bd927fd6bd298c30f5f46. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USWD11784037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1445971cadc559eec339caf43b4f3774ba4992cfa88cdc4c169b5aef3a011440. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ7U2454277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467969e65acfc22824e61efa8b971b431a85bc721e4b29f0368d836ee2f9ee68. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6P2557454.