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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 0x176269beb787c2e1e93cbadcce571d167023d62a818d089ef03559d17200e127. 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/e4ce83b8-53f8-4348-9142-93de6b37271f.json and https://artists.proofprofile.net/proofs/artist/e4ce83b8-53f8-4348-9142-93de6b37271f.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 0xbeb8bb733fb4dd99f9d8115b8e65fdc7b48424e7eceb5d1e6e076c985b101cdd. 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/IDA391300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec0c8c5f9acf760ae02227b0f662851153268a61fa1006de609d024268f2bfe. 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/IDA391300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b66e85b0d63516d12e4b417515ef35264d46349080ee1366a3c49bc6fe695e3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IDA391300274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ceeb4a4d53497169a885de8b5bdbb5b5831ecdf87a55fd7c5ea7a864d7d6e2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/IDA391300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f2a1eb529d2a64bab6d117b1695a9bc96bdc045c773acaaea92553a5f79024. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IDA391300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2decb27f4f383c2f81d332c4e1a5e5339d650858fe0423263f0288cd9704a725. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA391300282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164ecc5c4ccd1a91f6e33dc6f2810d7883f6e55ed1d8ff6f9167dd2e33669437. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/IDA391300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9511305fc6c3055312daad916179be00dc20744b14688077c9a79be0e989892. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IDA391300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7574bcd0d00e1e11d8bbde933a90c5a5a6d8593ebe031a371aecf344531173c. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/IDA391300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4329fa0f0ad0d20a46f4674d13b1a5f417af4098aeadfc393427295a9f9cd18d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/IDA391300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b1ece5d00087587ea1fa9162845b2481db19dfbf004efbdad440da152dee28. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/IDA391300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202c3a4604343da950faa14c0029b2310586d7ba407f6c8737fcccfa9395ff83. 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/IDA391300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377f8d0e3b79003b3c233ee2d3b312c6db61e7eedadd7bfd7eac18504408ab1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/IDA391300280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f229e34c1fd667e80343ae17a7d93a0a57dc38e50bd02da96213574c3cd43. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/IDA391300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164ecc5c4ccd1a91f6e33dc6f2810d7883f6e55ed1d8ff6f9167dd2e33669437. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/IDA391300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107437265a1924283d5a80c5f9a05a11f70961fdfdeb3811da743cfcdf11a06e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IDA391300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3083f1120eb9fcfa165d23111b88f63c69a927f06a0e8fab5ab3dc998bb776. 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/IDA391300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d474226e446f8205faa425e7145c7878c7806713019d3b17eebe76ea79f31c5. 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/IDA191300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1af562681337c8b77e57311a8c030b02845ab45ad7f4bb77d141a288b06c53. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/IDA191300145.
Hidupku Kan Damaikan Hatimu - New Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75530ded2585db0f5d0eb509021c1e38baf746b6e5794c8288533a7100d69dc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IDA191301630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfe51059e2621ec43955f68a53adec7f9da3174543573eb34f2fb4583014c85. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/IDA191301709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90bdd2b81cf09e607845bdf4b3feeeb081959e5e4a56b867e80184b01273eb0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDA191301711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea8b2a28ef7c43589503794c0c188e9682a959ddeccfc80af1d76007ee9af5c. 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/FR10S1967889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a198343415aadfc374d250c4ae33cf9c957ed658021e00509facdf87451191. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/IDA392400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc277100514bc28aabe85dc5164fab2df9312481a3513624a819bad4983f01. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/IDA392500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea38bd75b8c33779d9d74544a47845668e8114cc0b65be6673b4cd448231563b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/IDA191301612.