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 0xf1a5cd8efdf861b40024bfb6fd22fe394e28f529f5e972dc48a12946814374a8. 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/e4400926-fad8-429c-9893-b50aa8fd4b4b.json and https://artists.proofprofile.net/proofs/artist/e4400926-fad8-429c-9893-b50aa8fd4b4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
赵鹏人声低音炮-闪亮的日子 (赵鹏人声低音炮1)
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 0xc738fe33778dfadee41bbe99b85c71e94f3a9c785f70c10040d2ed1b7cd93a24. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FRX762033972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0c9360637b7fe9b5d87f32a5c63dbfd80dd75b09fa6141fcf2e17c6db817a5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX762033973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a030219d6c1654dd9dc9a94422eb6b29fdf251ad24192a4ab0d5258c12ae9. 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/FRX762033976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab09223aad9568cff9fa907b0149c3585d96f3f2b56f3255c033e3bf44ad8c3. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FRX762033977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba189ce78d609ef7de37e7ac284b719d5c0201d176d844e895e06912baa8d85. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FRX762052216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ecdfa58fbbe909cf5838a5ce7f6dff95e8506d3aae73876287db519dd6dabb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FRX762052630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05659ee3c57763fbebb169b5877934e53a914cbdebfe89b9a9e703d085bcc23. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FRX762052631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca63ec71bf9087e381f5eda180b4b657ec319ddc579dc402c2299078254e88ba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX762052799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7a3f9d3029d3839df0342605274c3a83a9e6d8cb2b30a0027dad7983cbc9e7. 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/FRX762052803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e5bf567846af9c614af5f39d706dc226ff710b463d89c67d39c147c01a112f. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/FRX762071399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc53162aef917f50349fcdf44fb610559272ff1bb56cfd04232ebac4f3928bd0. 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/FRS182162782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc9555cc8e80481b2064b9d3496c7eded66bb74a08e32dd4ce3af8423f456a6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRS182162788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14276f9c61bff1c13c2276ba26e3f2ae4194f82a61329857eb028587f536fba4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FRS182162789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e51604ace05409dc03fc132e97bf2fcee72fb2fce06affe9c0e34286b1bb9a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FRS182162790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bc0bcd8ee3fff4bf9b39569fb1c1c75e57262dd370e31cb17981748bd49909. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FRS182162792.