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 0x72cb46c1c6a0b8cd8d9a1f86a25b55a28981f2d14f6ff8ab349dc5ce4f243125. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee138540-07b8-4e2a-b233-7ca66e1bf7f0.json and https://artists.proofprofile.net/proofs/artist/ee138540-07b8-4e2a-b233-7ca66e1bf7f0.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 0x7774d1bccba17933cb056d912dc34d57f2299ad6eb2e484c855c8b27d46126e4. 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/FR2X42480454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a0caf7e6e1d1429881616932c1419db8033fa70ed47de7a24e97e096fa15e1. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FR2X42480455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2168580e3107de9b341353ef20f060369e1766ee4fb9311ff8c8b66839590d. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DGA0L2302631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3526cccb0ee0e5bf3d46695374f344066270244fb6851290dfc70235eb923cc. 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/DGA0P2376522.
希望你被这个世界爱着 - DJ豪大大版伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae82613c8d027a2213ca68fc709a49fc2bc4376b4b9ea348a4ff8f5d19881283. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DGA0P2376523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15b96f9e242e1f243ffc1a5ce4a87e19f70613e529f2c326c54f15468f89827. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA0H2387345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c8b9f628502da7ba852916c7e0258721e525e07087015e973d162385ca5539. 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/DGA0M2392527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d60442fdd5faa53c473dc46370d8ebdeb82141b4f6fb0d8697bf0049343503. 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/DGA0M2392528.
你答应过我不会再和他联系 (DJ咚鼓版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad7e9e83afcf2bd820ba0a77404978a8cd486d2b3aeab7bed8f59b019069b4f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FR10S2403176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324bdeefff9602735cdacc89f8f8a0d712d63afaf836d6e59c10dd44e64be5d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR10S2403177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed92db25e684bf87fcdf9928057d4650823e03a002fce52d23eeac7e555268b. 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/FR10S2403178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f865053666a1e1eb92debd44f6f6dad46cefc6058567adc16fe1ddb4572369b. 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/FR10S2403180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeced633e9d28c976e85eee5852840292baf69093d6a08e0449c5f3b637065664. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/FR10S2403181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed0d840d586b214a5e08dfa5a1db1fec4fdb3237bee5ebe503dffc71d9b699d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA0H2359250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed94ca3e77f7dd3229df82d5b751852774572978e36718cb552a35b540018cc2. 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/DGA0P2353516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65d882a88eb2ef9270319802bdf2b30977e966cee49cece6aa5e30338734ad8. 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/DGA0P2353517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4d8aa36c5073c323bda2ee290f332c366ea1b51f92fd849510073753ef3e54. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DGA0R2339843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0eaf50b8a939c415a7c668ecc4e3f3474afbc92ffdb22e6f09dee55d21c84. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DGA0L2329265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e5064cf7f7f1ff2010d6babab489949c54e14afe568a8f0e702d7287ba6802. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA0L2325019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5f7374ba16c24b49b13a90a2d1011bf6b1503d67844046ea78a083cb0e8b5e. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/DGA0Q2342486.