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 0x08195d4f09016885d38863be321c13b054bd6bcb5c6687d539afca53ffd62b03. 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/0b937c4d-d88c-45a7-8beb-b67f8d211c29.json and https://artists.proofprofile.net/proofs/artist/0b937c4d-d88c-45a7-8beb-b67f8d211c29.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 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 0x05f5d4d4da4c405ebe9a24c4f5340c329433bab473afbe1ca5bd0b5ef3a611a6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:02:33Z), 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/CNF182400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bc935ae2e2405d91f05f7653104ea9f35bb118e149f6225013661e77c0a981. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF182305593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdc28678a88434572ac1de98e9a3b0a7743212c4b4e841a939cf9bf10f99f17. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF182202256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290144bb9ef926581b9d8f058da41526b0525b394c627228b14554d227bf187b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CNF182202251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438c7a127160d56eca5e9cf823cd47dff9fa5de8a339cc9dbdd1e7c039ee3874. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF182202257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3f421b1ad1a3d1df0b30a8fb3e9ef72a23d312207cd2cff4f0adb764e2c6bf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF182202252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19454b45b488ca76a565c6270ecbbd188e69fe8886647ecd43392335d4be4567. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CNF182202253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f7c7a632b6f793eaf9f53c5179d74a877815a6df2671bb3d338e93b09a15c8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF182106305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed5c54d13dedbea281c9467bc6b8c18970c16b2583a59b4d6f6434295b5bec6. 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/CNF182106306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f047b0d5fa29b32bc857fe4a0c3c0a17bc8b40bcdbc03fea38131670430d8ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF182106303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddb87492f869439d495c93de91022a7f893f5797cd2e621ac5ab29f23ee9ce4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF182100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c1d297518beb233f485124bd8aa47e6bc8c1dd93fadfd5fd5745dc06db1fa1. 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/CNF182100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9385ce4bf3e014354e8846c3483d18f770757e9a77ec6d220bc268b185deb55. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/CNF182100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c61cd3bbfca47df9a0c3bcb44e6b0ec03b821a2bb74b194ba3a32bf48d02e4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CNF181900343.
听 致敬经典 (2018星海音乐厅演唱会 纪念版Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cea282b511371f913d1318dd726ebfd85797527482a15ab03198f9f12834aa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF181700815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79b69b140cd89fb75c306d7712c71180831a875be95518765e7c78c5d67c5be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF181700813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe501b86a0924c3f261135da7ce12a5e318f917faadc177edce28cbfc41422170. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF181700804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfebbf0ff1d12c7b5a349fc0f0006896dc3a15907180c7d41235d2699cac8c6f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CNF181700805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9809f6a9fee8f97a3fb2fba406e570b96570bc1e1521d8f9ed88770af59fbd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CNF181702484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620bc3767775390559f634977a6a158f9fabf8f8c5f4b64ebbd37f2dbcdb9288. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:42:39Z), 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/CNF181702476.