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 0x860c6251d492ea378ae17b1a2342d76587d2bf565eb1affa17e450df34eb5112. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b34b7f5-e432-4448-94a2-9a36fc5952e4.json and https://artists.proofprofile.net/proofs/artist/1b34b7f5-e432-4448-94a2-9a36fc5952e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
我行我树（《大王饶命》动画概念主题曲）
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 0x32e2963b82356b9d8ee66c656819e38bc51d4b6db968d00aa389db529f2c9ac3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR59R2469670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c67d006cafadff57b62154ae28a5d035f7a2a054220de74a9d2a22b33a7e59f. 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/FR59R2469672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fdda9c68fe86398a6cc7d2dda99576db2f2fe3e2bae73686c9cbe1b867d559. 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/FR59R2469700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fe075ea216a8a2c56dfe9287cb72fae0c16e81cd5872f669f2c85e8d897a6a. 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/FR59R2469702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96350ff2313c1ea20df7d777d6cabc7ed00c1f7b755260ef66e16be17b833c4b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FR59R2469829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6d3626b206bdbf0803194943babbc1fe67b1919ff1f5a10032258eea122d8. 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/FR59R2469832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36910974e2f735029fbdc571c88c4d6651a68196ea89e53fb1f5488f6937bd5. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FR96X2415242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5e26015256f867fec82e19b418827c78a6b986688e59bf9ac835393dece895. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FR59R2469654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d8f7eb4cd060b376cdd9a991a791c84eff8719ca2f15f7045f592bb81b533. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR59R2470600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfffbf934b881c4c4100352a3686014134cc759c5719db22cdd73c543931e99. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CN2DY2500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb1291021ff1c340a88e07d66455b6aeeffdcee631a699eef3845cfa8918b57. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CN2DY2500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe201c1fe54abe715436c18e3e9549a4bceae133c8206d7be7ffa5ca188e73a01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CN2DY2500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5384a954a57773d51860496489070c7dd0179265347eb8785a1bb7838354ecc. 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/CN2DY2500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52d8024a4aa1634d1c0d650b377e8c701ebbd73acf05feec0d391be6c1c61aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CN2DY2500133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba9f71b3116a1dec82a8ad7c8f43f7c40fe41066b1e2947ecda448d6fedbc87. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CN2DY2500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa949d13ac5a1052b242eab015cdc6235c47ff4c9c0a037da8c87d004fbe414a2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CN2DY2500091.