thumb|Theatrical teaser poster William Henry Pratt (23 November 1887 – 2 February 1969), known professionally as Boris Karloff (), was an English actor. His portrayal of Frankenstein's monster in the
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 0x052afc7c392ad242ec6955e277d3a34f0849177e580d184d91e915624c5a3dbe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1c21703-a96a-4d1c-ac9b-61dcf7850878.json and https://artists.proofprofile.net/proofs/artist/b1c21703-a96a-4d1c-ac9b-61dcf7850878.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prokofiev: Peter and the Wolf, Lieutenant Kije Symphonic Suite
Peter and the Wolf, Op. 67: I. Introduction
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 0x9594d5523626656d626139f958e250b22242a8f3b3d6b317fb75929580e9506d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:01Z), 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/US2CS0600676.
Peter and the Wolf, Op. 67: III. The Bird
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2b562c03284f2560a5b2509c0cece023ae6709ed93374582e119e36e3872a6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/US2CS0600678.
Peter and the Wolf, Op. 67: IV. The Duck - Dialogue With the Birds - Attack of the Cat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca87cc9a491014ae500911b21de41164b8f0378a71e39b2942fbab640d46878. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US2CS0600679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91340dd2074a7f270dbcfea6029768cce07a9c418b21843604c3336af57ea04e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:39Z), 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/GBMNA0812398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fb1430035d3fad81db6c263a6676157a8b656fa694a90876186427f2d5c16f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:44Z), 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/GBMNA0812399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee7d1655d4aec5613ff154ef71a2543363eebaa2a30515e3b47018469299869. 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/GBMNA0812400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2cc1a95a4da9ed5e184f26f5e27613cf74172ec127b9565704f1575e07c1a2. 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/GBMNA0812401.
The Original An Evening With Boris Karloff And His Friends
The Original "An Evening With Boris Karloff And His Friends"
Favourite Tales by Hans Christian Andersen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45f191f52a0afbded89737dfdc61c0c272a2dcbf010cb79dd03a3c5955b3a63. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:04:49Z), 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/GBMNA0915049.
The Pied Piper & The Hunting Of The Snark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ac36b726366e3c78c818512ab287dd10a0f490f946bc2948ee0ec12f103357. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:28Z), 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/USA371401867.
The Legend Of Sleepy Hollow & Rip Van Winkle
Tales Of The Frightened - Complete (1963)
How Fear Came (A Story from "The Jungle Books")
An Evening With Boris Karloff and His Friends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d0eaa689be0a1a8192314dea6577ea3dbda9b09888942f0401d42a27b5ff98. 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/QMFME1367947.
Horror Legends: Classic Boris Karloff Interview (1957)
Jungle Book & Just So Stories - Read by Boris Karloff