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 0xf3297fdbc2ea58c4fe7c6ffb12a81d06c5c4f25384eb9a185a57461d231c41b7. 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/3c59228b-f2d3-4a73-9e57-22b8607db0ab.json and https://artists.proofprofile.net/proofs/artist/3c59228b-f2d3-4a73-9e57-22b8607db0ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Playing Games (Fuck What Youve Been Saying)
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 0x189d1cfe7c3a2ba5302bbdce9c2197a36ac7a6e875ce979428a2dffdd95be79b. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZPEW2507704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f62b7efec770eecddc591e838d26a18ee4a3bab398a3df53398b7bb9ad783b. 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/QZZ972446605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d5577afbd88e9b90b3fb6a022d9973623763aa9bcd2b338ee55405de6f7a3. 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/QZZ972452196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d48d493369da904f219c65f716299cac288c86c7308d7cd8c294ca8d4bb0b86. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/QZZ972469182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9890846c6bcd372b409dec3425b25a6c1d78a022384a361fd7f6ecaceea21a. 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/AEA2L2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ca9b68f250fba16e5326fd4e9b4442a7ecf9c81bb6ba919b1fd673e4be28af. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ESA122453387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8634653b1915af873ccfc593736b69d05bb4ce021fcae0ee7a7d4390c08809. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/ESA122482815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bdb51fcdc962e8c01d35d2f3bd41abc9142c86d148d2d84ec97a9e8800584f. 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/QZPEW2501713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ae051696e2e25009151a5fa85fefbd43b94072cfe7b7e23e014772111236df. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/QZPEW2501714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3309a42212e2e63c002295863420bf3a82c00198ab24719c82afdc04576b09. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZPEW2501716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d407fd20d3dfb467f0e7a7f9e44fcc2bd4cc680e2d440d52387802a47ba49. 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/QZPEW2501717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9793ece657b54bfdabe7f5740f255ad953e8b2c3e01ce834cc00b79316d916. 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/QZPEW2501718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788c482c3262c90168a4bd69fbea0c16f11506e281112e313166d17a16a0b3fe. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZPEW2501719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe93e07409e9f537d04542e54a04e5458f0b10278254c6b8855efe5897b0865. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPEW2501720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b91b3dc98e489ecd4ae508e3259c6f7962dae8c8106b37986c8143ab94c5cfa. 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/ESA012534135.