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 0xd9485291559410471144fc6129dadfab8cf727f954ad52106c6796fe94487181. 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/597c630d-aaae-45f2-bf6a-c68f028d3f8b.json and https://artists.proofprofile.net/proofs/artist/597c630d-aaae-45f2-bf6a-c68f028d3f8b.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 0x398bf51d9a486ed516f966db50c36c577111f06d401c25216484dd34b3068642. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HKG742116034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87cb63781799466c4264702884e987aa76552b6515d9b5f3ef3708a99eee143. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/FRX452369346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1726b7c5e1ee04768fcf6071cfd5e8b72f1c87f43bb8e01307fdc64f12473c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DGA0L2412187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ccd96934aa443e712161c141c858c86bb453805558f136ec6018e0b2866a68. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA0L2412188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ccdd8f7f5edce251b3627b304e5170032cb937115b0be2314eff8637176fa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA0L2425939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a85cf50d6a0ee4ff5c7583a91aa352f740770052a31b9578794a0c55e8d34ad. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FR96X2535566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e191aa5da0ce8ca194e4e3f6c1595742b998e3eed6f9eba150163fe5fe6398. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FRX452509294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13645718edb588c51d10d7308423afc1bac10bf811c1044c29c6bc676dbb479. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX452537112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb288388d631551b2f6211972680b00c3177a0425c3a21200e0acedfa11dd9f20. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX762584251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65762111ee7a62e7bbb3d290b110b6e6543f7d2f752ef4b0dee44635a52d33cb. 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/FRX762578231.
熄灭（你总问在一起会不会感到厌倦）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef13dd19d9a121d477880f2361156bb1de5ea5e73179dcfc0ef1ccd6264da11. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DGA052507380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2ccae86ca75194577c3d01212009fc4463a1946417c940b66bfa5f9fd8707c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DGA052571895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf0b906c2a1e993383dcfab5a5f8cb943a5dcb28716c49a5755e70b4137d1fc. 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/FRX872598956.