Peter John Holder (born 11 October 1964) is an Australian magazine publisher, journalist and non-fiction writer. In January 2013, Bauer Media Group appointed him as publisher of its joint venture titl
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 0xe910ca43c7a1176d921121042ce8fdc3dec252a6cdcc6d35df4bf88eea94f795. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecec14dc-d003-40c9-8ede-58d2daf18b03.json and https://artists.proofprofile.net/proofs/artist/ecec14dc-d003-40c9-8ede-58d2daf18b03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fanfare Trumpeters Of The Royal Air Force
The Choir of His Majesty's Chapel Royal, St James's Palace
Choristers from Chapel Choir of Methodist College Belfast
The King’s Scholars of Westminster School
The Official Album of The Coronation: The Complete Recording
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 0x462ef589a2e1df022f198128dfbafcafd0384e6f9be6ac91f1e0cbc2653610c1. 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/GBUM72303854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2398b6a6b86c1d5bc1267d37665d95d207586780a3dbedb19251006cd040cf. 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/GBUM72303901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490ff0e1a44401fe22ac70cc59538af104dfc7c5fbc30341a94b386ee32985b9. 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/GBUM72303860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56942533591ecf1c420e0d717cf3e030b679a0af093feb268ba05da16a2e41da. 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/GBUM72303944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa009deabe2fd19ca0d30db3a1b18a4a68a4cbd22002ab71f120fdb3fc9da7e2b. 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/GBUM72303900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757992ed0e309b403a9e76bf54f126f48f74e9fa9fc7141468e97fbbed96ddd7. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBUM72303883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cee7b927a59ad60308fd975d7661d077945aa25b3296243c514d4078598e59. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBUM72303871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4533ac9b960907ecca25e5ca2ed5af24f3d789aff42b47f88cb5b9d34d9710. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72303866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67204574f28a7309399122deabcb01a6eaa0ebc30b68210516cf8b2f3c1a69f2. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBUM72303942.
The Enthroning And The Homage (Homage Fanfare)
The Most Reverend Justin Welby, Archbishop Of Canterbury
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9a6cc4270f3735be6091bf3aad9514dda100a6432afd29544f2456c0534e77. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBUM72303941.
The Official Music of the Coronation of King Charles III and Queen Camilla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2398b6a6b86c1d5bc1267d37665d95d207586780a3dbedb19251006cd040cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72303901.