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 0x27a4103c1153c652df51b2eee8fecc84886f71cfa4e55f465bfc1e87b06fa0a1. 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/0bb52032-5964-4181-8cd7-9cd404ad44bb.json and https://artists.proofprofile.net/proofs/artist/0bb52032-5964-4181-8cd7-9cd404ad44bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
デーモンダンストーキョー (feat. めいちゃん)
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 0x8bd088234a3ab401152810f3817ff3612c21f436bee8af90e201fd4c223e165a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPM2036994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3c9e98c75b85c06cd516a678d1d924956890333fb8e216c7f5ef845dc1928a. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCJPM2036996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cefb5e4517599aa5dfda3b19ac1637dd0b24b0a4f4b577ce69f1c992d4218f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCJPM2037002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb35d429bfe1a1467aae79cd82b0841268a91d8659a796330f3e4c8d3beeee7. 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/TCJPM2037004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fabad94a5ee8e36dd95f4a62296a5f57e507fb001f08a394844c893d4af439. 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/JPS801838032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a992bbba18712c56aa6d92d61935c579a0408b151190a817a2ea427b1c35ffe. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/JPS801838033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc7aab186e18d70dbf7a9ae5c44e20eb106f3a4306c1c5d9183f71a0ac5570f. 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/JPS801838034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce72f62b999b3a9889863b4d5e804ed477336a81bd0014d5dc8bd2396ef586f. 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/JPS801838039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccad99e3b5215626adbf0690e7a058854482c876393b96e52d37ffa91e73c3f1. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/JPS801838040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fc79a57c95166a476167ff302b8701a239a029cb1eedf749fc87388d96286b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPS801838043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfe9ecc2e97ce2b1eea62c4b23b2855e75f4e089a40f3244826a4d4de0313d8. 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/JPS801838045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3105bc888b497c1c7ae4b7dd0bf211816937fd23fbee26694758e0aba6652f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPS801839550.