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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2eef299a4609636b09631573c00fbd7930ac28af989174791e5f45bd58d048. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdd1ce55-dec0-453d-a288-f21c9184c1f3.json and https://artists.proofprofile.net/proofs/artist/fdd1ce55-dec0-453d-a288-f21c9184c1f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ハイスクール・オブ・ザ・クレイジー
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e2853e19c88e6ee7f2dedeb927153c087dfe27cdc2485af32cb28be7377ea4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCJPS2228719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2dc99ba0608b981c3aa44b0103930f295565a7bc9f7a4cc3392e6361247097. 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/JPU902203361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe4ffba8acaf44e56672bf67a9c77b483b183fe6b2aa9af2383b16bde6bd271. 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/JPU902203427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8824b2ca7dafa725d6ab7287148e9c4068c448b33a7887705781411ca3542114. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPU902205390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478009a5ff92623fe1ca92af65f303e7dfe6e652fc3635d56f8ef87ce4aabb9c. 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/JPU902301887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec0111fd93d3a0169f284855b80d4c57b3d29290a796bf8715511b056c34196. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/JPU902302036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2673ff507b06ab97bda5b0789c80e923d0d3f603bd173c360f5e1635172e9d8a. 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/JPU902301673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b119425918b8d39cd5f6b10d270f11e6ae65017ad8729ebce8eea9dae79bbe9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPU902302037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029aa0372151cfa7541cfe0822c62a9258fe739592eb6b5b9cb75c6c9d5610ca. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPU902302038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259beed644f33199c2663151d2b5ce423c0a651729b4be9e341098776d34c86a. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/JPU902302519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fdcecb01ccf93ca71e2628e3963498ce9a7a5273a6b54663684a366f08be1e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPU902304413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905157eb8b0f77670b48b0ab0e939306f789b98a41e137d6eef66c07ef22e669. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPU902400325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d91aa71ea0a97b65346572789dc4e3fd221e9a6f390664ebf98a561f5fb24d4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPU902401337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d91aa71ea0a97b65346572789dc4e3fd221e9a6f390664ebf98a561f5fb24d4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPU902401337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368310d0f5505bfa5ce495f63246399385d488f4853869d5036bfefeb466769. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/JPU902401456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3385f7202689120de08266121e1f71be87c7b4e660213de314fa77cc05ffbbcf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPU902401457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9061b386239b2acd3bcf76aba878e1eee8fc1ca94d756ca7ebd194e64acef1aa. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/JPU902402967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd540675d7cbf2f0cdbacb2e96f65015ac8b129fc8c0e973e2d8e0f5953449c84. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPU902500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad83157597ecbb6d5251553988f87a7901cda6b68ff6f7d42bba4103a8dcdbec. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:53Z), 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/JPU902500006.