Trevor Charles Horn (born 15 July 1949) is a British record producer and musician. His influence on pop and electronic music in the 1980s was such that he has been called "the man who invented the eig
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 0x3d6b3d798a7bd9bd468e2fc1e751e7fbbbcb6d8f68ecbb0c4d9c5c4da4f8a948. 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/dc5f0fec-d2f5-4d10-a755-abecf1267e4b.json and https://artists.proofprofile.net/proofs/artist/dc5f0fec-d2f5-4d10-a755-abecf1267e4b.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 0xec2071482215078c718166a768e1081ffeb06d5c3ef7b63f865a9cb5cd281cd6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN962332214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743b1404a561af24d434ed3b4f20eb344fbb00643108b7b74ccab608d22174b9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN962332202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa156b5506b68541cba7f10b5d573b0f61f1a7b490d3c71943073786662187cba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN962332203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf296a1243717e7cfb2d79c81c5014deb2001219b3fef926061818d58293fbc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN962332204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eee8921603b1d69b2461f4217dee08862760a54c6b8a94eb6dfe5f3f5e30cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN962332205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954eb0f79883069f136bbe5c531c60abd55c8d0b3db38fff5581aca1a67f44af. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN962332206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d8cb9517ae472fea0f5feb24d47437bd4dfdd4437ae2ea38d267ce271a54b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN962332207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23a2c17cb38982b8ba5d36e14da8e3d8ecf963de12caf1a3c446d468b44925b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN962332208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb627d4b7b820bd615aa05671177a9425f7027f1cab765a30d6887ea8d7a6d03a. 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/DEN962332209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacc6244eb342a334ca72d2841cafabc3ffafe98fcc170ad5f1f7c2e366675e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEN962332210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ee82de119ebd3a50b63f82a4e5d0b63d405b6c44f95b30fd5ddd6ffc1a1ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEN962332211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2071482215078c718166a768e1081ffeb06d5c3ef7b63f865a9cb5cd281cd6. 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/DEN962332214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954eb0f79883069f136bbe5c531c60abd55c8d0b3db38fff5581aca1a67f44af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN962332206.
Video Killed The Radio Star (Arr. Nicholas Buc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffe157069be3bf7e7184d5f15cafde39a1c45a53d3863fcfaa92bcd27836120. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUAB01650696.
Gumpoldskirchner Spatzen Children's Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0495503dd4fa28656672507706de9d6985e31a4fc9387a5bca1b581ad60c3f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSM19704320.