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 0x707033016e9d15ace01808fa696cda454b4603c1dcd227359a50f2a47cf9a075. 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/e309bc83-5ade-4387-acd5-f8f259046f02.json and https://artists.proofprofile.net/proofs/artist/e309bc83-5ade-4387-acd5-f8f259046f02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KASOUDENNOUSEKAI (feat. cyber milk tyan)
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 0x11924d493a7e02b1ee0410a2bf71364198dd79c2e42fe36e2b40ea5e70b39e22. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPZ2420050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c28eb1248d3893cd8466cf36cc7c2d9204a343ff8070d4c74875060219c155. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCJPZ2420081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d8dd33be368dd48057b825a43039093b061f421e02ffe25c967932788b9039. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCJPZ2420072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd854f4112325b3b71f61d5e2cc2ca59ffeeb08a6f2a751a3a7c55c9ea08b853. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPZ2420084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d922eb38a537bd0f87909663eb8b7196e317d2a8dda9b20f56753e2afe98432. 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/TCJPZ2420099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45663f55a104884b1d7c0d6cb920fdc6a7d2c4f0f7f3020a74bf8cc5ca677c. 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/JP92N2432707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f7f93948d7634fc9b7e091f49f5b6396fb0a7ed36ffd13e728d869267e11d7. 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/JP92N2433717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45663f55a104884b1d7c0d6cb920fdc6a7d2c4f0f7f3020a74bf8cc5ca677c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JP92N2432707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051e7ce8b7287a08b5e226cf56a5983c9697ed0bfea4f7ba48a06176c120d0f3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCJPB2474838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89ebd8e4cf8a3a062f345d67f0b984a23d0ca23f984dea3ce8acdf6f7fb607c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCJPB2474836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051e7ce8b7287a08b5e226cf56a5983c9697ed0bfea4f7ba48a06176c120d0f3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCJPB2474838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d96203ba05faac88f2d426baa2d7907c0622d2efe7be3dc9ea12ac25d2b9a0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPE2515639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9814700b544286b215e386c522e77add2d51c299dde5cb4d2f6b6d5125efd329. 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/TCJPH2577169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a29fccfdcd60296b604c8ef4ecf78167f9561341739d99d630fa548c7b5117. 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/TCJPH2577316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2cda7dd0f9a50064306c2246f6e981f89fa1d69725e5f84716ab046c70648a. 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/TCJPH2577333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda3ba6dae6ba9bda813ac601046ba4b72310d53086504660ac0ce66fac98457. 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/TCJPH2577592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d70829b7fcfbe860989173d4b2aa30f280dc1121500f31df53dd2221079672. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JP92N2530750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fbb664e5b1f343629ca6df935cc5a545a519f08d8636f6527ec95350bb0df4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCJPY2362831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfe9f741e3ac14ced487101453cb584d2ba4a8b6640dd20773f55d7cd8df618. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCJPY2317053.