thumb|400 px|The locations mentioned in Genesis 10.19 as the limits of Canaanites thumb|400 px|Codex Alexandrinus, Genesis 10 19, the part mentioning the words «ΕΩΣ ΔΑΣΑ» (or «ΕΩΣ ΛΑΣΑ») Lasha, meanin
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 0xe4bd33a8ae7bfa89b643023b8887858d7840f5b926ce83a8924c2d761727e4b8. 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/c85c8c28-da31-478a-af52-2f6cd6f31ead.json and https://artists.proofprofile.net/proofs/artist/c85c8c28-da31-478a-af52-2f6cd6f31ead.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 0x5e4d95548d01701f1f15b11ae4a9039f81de971587e357e08cf6feedb29d3d4b. 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/ARF410600784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0558cc2f177783f32a3fc5c91f766cf6685a56102b2a6f1acd4c34d54b1d351. 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/ARF410600786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aac12abb2e94532f698cbb956383f3d814e3b29759914072777652ab5594ec. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ARF410600787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e5dba430d01c7a7beb5d465e7818a5dc6c7a8cc0b75e8aea642646bc00c1bf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ARF410600789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cce5aa64c3f19426eb6bba37bdbaaac7c826a5734ce3fd55cb026a2288df1cd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ARF410600792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000640290bb6c4658e37cc8cad57fd0b4fc6676a340fd331a3d1355d5f4729c9. 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/ARF410600688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e81526f9cd3f731cd9a3a165f0cd83790b899198b6497cbd1e32989dac34bbd. 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/ARF410600614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf175746f7efe73b6d367eb5867b7151ab032d7f30b002a0e23f6c6e8fb799ae8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ARF410600620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5ddb9e091f0731d42536a665a1eac60387970f775aff5b4a709b8d42926334. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ARF410600623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b1bd636fd5818f5dc0bbbb9de0ae3a8449bcc6c0bc72dd601d9838c0b67d42. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/ARF410600799.