"Ligeia" () is an early short story by American writer Edgar Allan Poe, first published in 1838. The story follows an unnamed narrator and his wife Ligeia, a beautiful and intelligent raven-haired wom
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 0x5c6226aedc781837f973e8e4cb5f1ad87ed24de6346bf28c1cd2a6676a0710ff. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/716a1a75-18f0-45ca-8a29-9be70ceed00a.json and https://artists.proofprofile.net/proofs/artist/716a1a75-18f0-45ca-8a29-9be70ceed00a.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 0x32e00320ce70304ec110db05c14740909b26d8b6534b8cfd38c9ed4deedd2ef2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US3H40606501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1503a8beb9fea7752c123f00aea194b3684bd12c4ef31854bf9e0fbbd26e2a99. 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/US3H40606502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f607441429f2305c2e09fc15655e6a7835928a3df2f8cf545b2e4497895325. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US3H40606503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fde7580616e2b8aa3409b9eed07ff1079ff31a04ccbc63419b408504d964fb8. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/US3H40606505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcc202796c0044a6a438af1bf1d1f00c4e55fc56a49de140be4ed0797fcdbc2. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/US3H40606506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d57e0a05febbe99f51396c45cf386140faf6359c05b8e713030c7ef80e700c. 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/US3H40810701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a0ffaefd1ae7ce05547e92f770c11e2a3db05e0fb466572693a9f0b6ae0a3d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US3H40810702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af9e7cda42072485250eca5d73d74a86c1138ab5a601954b93e3663a658eab1. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/US3H40810703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1078b6ae3116a422ee343100d6508b068f62555c2984ded2143a78a95e06acdb. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/US3H40810704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bf396fddcf45eeb8119051d0429b1045aa6704ead4f8e8377157418e3ce7eb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US3H40810705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5eb576cdd4605734a82ade4aa26bc11c850a930808ac9b6329ef6dbffdf390. 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/US3H40810706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2111ecb8760497b8c588893edf444d93f44d531f36d5cedb832a500c55d909c7. 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/US3H40810708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddc444478952ffb42d8e876ea932f372419dcf1950e7ddb5e260c85335d5cfb. 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/US3H40810711.