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 0x84e7edf8b70b4120bb286c80ee1b3b67b8722ae272b128e235021377ce788a77. 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/93fb4292-1f95-4cf1-a283-b83666186980.json and https://artists.proofprofile.net/proofs/artist/93fb4292-1f95-4cf1-a283-b83666186980.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 0xa4e18d6cbd77e99c7b9b9762c0fc274518db876b2e377d7b990968ec691483ba. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FR10S1924147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb9593f341818a0b8cb87c662a9c4a154e3f1109cf318ffa5d388665717b939. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR10S2066776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf02c4344efb67f0484d155e09cfe14cb62b17896f16202f7b5706a7de78ca17. 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/FR96X2042803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf320fefa84d1893ed46b25bb1d017bb3de5e2562b099698b5bde3ffe7ef40b8e. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FRX202050046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cbeeeac26d76e64e435bd64933906496b2e066164b2c2315ce8fb77ee06d6c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FRX202050047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a92bbe61afb9291959da3b079a5a3960005de0b2865c3d8fd0ddc4f250f3ad1. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FRX202158610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e469021167ff37adab35e6839ba5aafe53ec91c09f79dd4e95ad56b2734a37. 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/FRX282159145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2afecaf71ad04242b2ee2af935c775e86706b998aceac9bc3b00b2f90fa890c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRX452102053.
เธอทำให้โลกช่างสดใส
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3095851ae13b9bdd0261ed800a1a48702ab0a4e715f77f43f420c6938990d376. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FR10S2297085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557239237bba1e5b134f0babca87aecc860d1b081f71318bca11279faca6ca1b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR2X42254535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed2bd7ec1f57fde908754c8ba4ba789d3ef51e3328da65cece98e8652588cc6. 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/FR59R2235646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ffcde57e50e09d2b18b43af68a776b0f7d33fc794c58eda625152d5a8252a6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FRX202237613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a10283a0fb867d4f010499c29ce556d9ef43fc8bc0811aa37b9271c7244509. 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/DGA052315670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf265e3d0ae6c5d797a537afd632276b3bf8ce67e0e694a31f69ec01a955f6399. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DGA062382701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7303dc13683004af3b391820c29c268b384e8f0b7889963128f5e3551da0748b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DGA062382702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fe24729f5505dd0c8492b235a62934f7b700898e762a75f88610a936219a50. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/FR96X2472495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783d01d59cec11d3aa9ea05bf3c26863becb15af4efeebd79a1ce40143c52e05. 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/DGA0P2478048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3967512477b4eddb6f67a316437ba9874457637358f16c18c67be97fb1024b3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX762564861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bce7bf7364c2b22ba8332c0d046cbede949d2625b4f60322f861b52b27da4c. 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/FRX762564862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e4a163ce1d080134d95a238cd5709ed1a943500a894e035c347c2efdf70de6. 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/FRX762564863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31232ee059f25db9764188fd99d205e0239c6c59971451653835f7631d886a33. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX762564864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9ad72415f0d1e8e364c3168dde06e0751079750c73a1b70207acb13e2ef32c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX762564865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8684089c8da297a78dfc702739007134746c10de69946d6af4bf2705b84d51cd. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/DGA062599728.