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 0x2a4d2fb6bd77f3aba716d2c9d9bc9314e28866a0576a9fce50776081102455f7. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc4ffc26-3db8-43e6-8ac9-cc06351b0b92.json and https://artists.proofprofile.net/proofs/artist/bc4ffc26-3db8-43e6-8ac9-cc06351b0b92.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 0x18d9fd1013c8a2413834ecff4be2112d70e64dc8c8cbb47308c2a9fd0ddda940. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CNZ632201039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdcb0825e99721d3953a05cdf13600304a673acf2ef64ccb696363d299929e4. 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/CNZ632201043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dfb714075659be2bfa8f53527bee3dbc05f406b0e01bebdfa9b5243e2a6d91. 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/HKG731568427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d5208950b7b036e6aa15acee6fd1a7f5c25479c0e7de199cca9ec810973c3e. 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/HKG731568424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b699eda721a0e89029af07b4d0b975713cfa7a5a15c87003a5014150c01d0f. 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/HKG731568625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb799dbba4f9fd72d5302411a2987ec5bf6e6fe5eb97ccf7933c5a222152eb8. 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/CNUM72400535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20663c20f2fa801dc4908357820b3763b833c114778615e4b739f341ad78173. 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/CNUM72400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ab7df90e9ea795dc0a4aeb4b60bd65d28c139d2cfcc867e7417b93d2d8843e. 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/CNUM72400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a2060edcea666450cfb42b3168537f9175d53044742b58b2265d15b9aab3d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CNUM72400538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779bc440e5885f21c6b6cf7ea4c2c2bbd08877fa37c9a45a2dc1439d02ade75c. 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/CNUM72400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8e5bd77e6074dedca15580fcd27d604747ac352cb7a2402b31ab5b2f244c5b. 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/CNUM72400540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba323f4a2c46013c1fac49c59da6342544c7f237b9f46e5ded0bf8a4e46facc. 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/HKE672300789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96927da75ff26ffa0981c279a95886692d9c9f75b957b557bea28a8f8b6a716. 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/HKE672300791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b42d789ef0d25cfccb5cc495d2b42659736115b807522bcabd4d5557d1f3e7c. 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/FR2X42584787.
归来 (电影《那个不为人知的故事》插曲)
归来 - 电影《那个不为人知的故事》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f001c0e17c4364cc233ee461fbf373c6ebecdf7234dfa75c83b1f96d5bfd31. 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/DGA0R2413069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc8009ebcc8a567a51ae694dcf8aca980fc945864f53c8acd538333ca9f911d. 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/HKE022300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b5207b970d9668ab694bfe787cdf9aec4683d89ed0679221155ed797b88d10. 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/CNZ512200477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b811e71bcca10ec1bf659031363c2b8533bafa136a7b43fd1def3faafda591. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:15:06Z), 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/CNZ512200474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7289f656afb08e2a4a0b64cd635a40089c185cb0bc998994a467d22bbac8e712. 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/CNZ512200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c172259078d442ed04969910ec757c779dbaf7218df999d6f49c7486699dad9. 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/CNZ512200482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0e4c9fabd74c8c80a368497eb67f89ff5084a1cfc5af032bed2475e2f4990a. 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/CNZ512200483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b1771d0c8f2e148be2a6e5eb33f16bd4c8465b789d825d693356d64672c46a. 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/CNZ512200484.
北欧回声：中国听见Bjorn Eidsvag 之 极光落在北回归线