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 0x443b7dea14a0c189c4e450e3e84bb65d54721f455cd5bf3419d2e04b01f06f1f. 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/1b77744c-1893-42ac-bed5-37e3e6f209d6.json and https://artists.proofprofile.net/proofs/artist/1b77744c-1893-42ac-bed5-37e3e6f209d6.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 0x557b3be9f67a95e84363d4adb57826b900b855d5a1c833d6383217322d09ab87. 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/HKD012420693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b20c52b7a702bc1dfb4374cc4f7054f123e780e7c6fc84372cbd0d0570038dd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HKD012419670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452985531c7110408f30f75fe8c309099f42c38668dbdbbc52d510e1a9b55110. 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/HKD012419785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd79d485a24133bdc5bdf1a518eba2fb7adcd1fbbedcb635531469a12801c1f. 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/HKD012419363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d77910ca774fac917055ec74ca5ff29966817fc556f6fd30deae458f9f2cf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKD012473513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2006039cf4e2bc30149b7888624447c358edd077252fd92dca66e46f53d849ba. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/FRX202560183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0acb7194b405b44c4534cc25c84d853a5b3c810d1787722655287c9e7944acc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKD012421473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f8334de91a3dc9335273bfa8bfaf8ca3cdb166b6a161b82078549fd38e4d73. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKD012420867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d173fb51f44c157809bca4ba390067e6cec7e926ecfecbae1f807bb393acfff. 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/HKD012420487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413ab3ac9d0556c83c3c3234d6f522bc402040daf7343518960450dfa8d48063. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HKD012419893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94d4b729f6c2cfc6d30b947566749a132f23c053be6dffce165b8744564ae11. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HKD012420044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d4c001cfcb89b49d5c20750f0fa7b2475c995b722f2292f2417a854b6668fc. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKD012420805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad1c7bf504abe2d7d82a38df6223849fdc0d654d46a28e1ad78e4b4294e1cf2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/HKD012420040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40477a3e4c52ded00873b7a569342d1cd71acf284d4a7a79088cc5fe76454cd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKD012419632.
明天过后（是否两个人足够捕捉爱的镜头）