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 0x3f5483952f6c3bec15afe09894a9479e0bdd54e2b3c1f99e5bd10d0e49ff0980. 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/5e7157d8-144d-4958-abf8-3b739bd86764.json and https://artists.proofprofile.net/proofs/artist/5e7157d8-144d-4958-abf8-3b739bd86764.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5f48280bc80cb094c6cf49b118ef5bde9cc7ceecc5c2de5d6c7ef00d83e1e5e6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:21:37Z), 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/TWAN71880063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50ce47535aa11418bb6db70a208dfa7d04dc944f04d71b692a1282061c1b8ee. 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/QM4TX1928551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1ea45ec2a3577355f122019e675da69d2a6b51b31ea23edcf638a1a50631b9. 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/QM4TX1928554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc525353ec995b91f50e2a4942524e61c012b56b10c20e275f2839f33189b3a35. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM4TX1928810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362dfdc5d39efd53cb1a26398b460cbd0ec8cc2dd61b408cbf6d7a002f3acea6. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:36Z), 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/QM4TX1928812.
那一個春天浪漫夜晚 96'年演唱會紀實 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fd2c1e9b6e0709a88cbcc58f57c81238c38ff0488870f85a7a301e7210f1fa. 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/QM4TX1928862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256d2cb5baa00369c92b7e2358768e83706bb6904d66cc39e4309cd405c0a013. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QM4TX1928741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e8f04062124232c0b8c0dfc5873aea026d569e0822ae8d85fed3e1dd3638b. 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/QM4TX1928742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda5de0d0a0e3dce101ced70a98abdad2db0e39748bbc13d3c060a6ca8c47bd2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:57:51Z), 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/QM4TX1928748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6479b8282b114df33c8afe535f2cd1bd8c32c716767fa536108879eccbb6e1fb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:11:03Z), 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/QM4TX1928749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b07fa250b9e150f5554a2582157d84092c8c772e6c7b28ffb2e194a5fe3dc3d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:40Z), 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/TWCQ72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3180c9f9ad2fe5dae60467c02b3054eab4abf52094c0aa37f96098a30225bb22. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA072373568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16504ad6042f0b8e495082e9455019facdc5dc558e26af75a5efb060cbb3da1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TWCQ72500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95274b29a6aa5652a9a1a81b5e80e40e7bb16afbf59394b978fe3750fb599cdd. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:29:47Z), 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/TWCQ72500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8dcc06c9e905b8c4ec0dcfad78dc74e661d7840eaa9aaf4e72e44aeb682abd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TWCQ72500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d5cf37fd64ebb9ffe009a443c9a51736a0ab5424bf37e6ecc98797c24b704f. 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/TWCQ72500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d28d6b8defe9c1bcf28f4024af72e4720c8299374830d1359204c20ba6cba7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TWCQ72500005.