thumb|upright=1.4|An 1876 map illustrating the supposed location of Lemuria and the hypothetical dispersal routes of the "12 varieties of men" from their alleged Lemurian origin across the globeLemuri
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20846a8c83482d08cfc65735819919dba8a2426a1fb1837ff3b05a312c4dada2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a80f2267-0193-4c29-8fd2-8335a3db611e.json and https://artists.proofprofile.net/proofs/artist/a80f2267-0193-4c29-8fd2-8335a3db611e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aa91f98ad86822e5ed1c60d962c28a50e22ddb4aab99ce1c838351e7901cd6. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USB750800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5f086181af959d1d60f272fd8424a1d12bc109f5e9402b7a8cb3827b37bb29. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USB750800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463a5fd8f42ee398acb63b450c6506bf3d2e3bc43dbfa07a4a359f658bfa7c74. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USB750800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29756f0adcd6a2ded821fd93368717bfdefc79339527c870c5f69963898c0e6a. 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/USB750800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36adff29fbb51872732088727424e262486a5daa137d2290e6d28061941064c6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:16Z), 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/USB750800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04da45ec9a2da69ad4fff598a2aa3979ce7e962fbd11cbb2accf4d4fbb12619f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:55:31Z), 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/USB750800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1a178e5730fc7636b39e341973aa565b5b925117292e5f1c0fe0844c4130c3. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/USB750800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e959d1f24499b64b23e2c88a5f3144fa1df7aa2113d6fdfc00333dacb3f300b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:20:52Z), 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/USB750800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9deb436dc8d052ea7cd1f1edd5e2998985ed6b7782e01fc070385ae82e558cf. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:45:28Z), 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/US4ZV0910144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5729d2cbd468773b05063f32d5f2ab6e3f1adf1ea2da96cb69bcd6f1490dd686. 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/US2Y71000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcad8fcfbf45bd3ae98221cb7c2e5d7897394b2dbc17191217bbcfdaed2b957. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:23:04Z), 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/USL4Q1748497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf152f02f08d8e6ecccb48f929f0c95f5057bb9462cb7fc295945380b381e5e9c. 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/USL4Q1748498.