Robert Gordon Prizeman (28 February 1952 – 8 September 2021)Robert Prizeman, composer and conductor who wrote the theme tune for Songs of Praise and founded the boys’ choir Libera – obituary was a Bri
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 0xd641c8613fc324b1a3a406c8d5bf242fd090e2cb2fc827299a8536a5eb8a8435. 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/0438fdb3-8218-4231-a40e-43b4c187806d.json and https://artists.proofprofile.net/proofs/artist/0438fdb3-8218-4231-a40e-43b4c187806d.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 0x6e649cda0c3dbf1907d5500f821ffe304cc36cca64c2f287e76f869abf49d6d9. 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/GBHKE0600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271efcb0af3de707646d7410900e11ef5e21d28e714fef1b59849295cf3a3a9d. 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/GBHKE0600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c25e1086fe7d0d9dab306ece52e3a1e3290ed50df2088b51b32dcdcd9527df. 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/GBHKE0600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271efcb0af3de707646d7410900e11ef5e21d28e714fef1b59849295cf3a3a9d. 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/GBHKE0600031.
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6575709fab7ffa8f4ed6f78d69f85143c4d7456e103392a0827f4cf8af757f. 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/GBHKE0800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e649cda0c3dbf1907d5500f821ffe304cc36cca64c2f287e76f869abf49d6d9. 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/GBHKE0600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23926526966bd3cf77d0626dc60773b488ac885a5bb602942898de1a423a25f. 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/JPTO01100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22ba5747686e15919f04156f8015bcec1a6ddf3d0ac2857f4e3f9236ef090c3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHKE0400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4808cda4d9fb6fb5c4b2dc2e5378f8d49ebdd1e7f7f30f926c9dc973a34ea945. 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/JPTO00801551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e645db3464bc6cc7ef0de51e824210e0f02d953e7fad4ff1fdaa984157fa8cf. 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/GBHKE1000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818c5bd275efa4e1b5f549f28213a4bc67202c7e5542834e8dea8d9bb664dc99. 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/GBHKE0600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0953bc8a559b4d7bb3d82f511b09d8477719f3e76c3d0f8a7ad974a9612c51. 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/GBHKE1000085.
Ave Virgo (based on a theme from Mozart's Clarinet Concerto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ac9a7dba17c4faec6d6b6d23deeec95ea955ff23bc12d740121c6ba4768371. 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/GBHKE1000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6060ac2c76c92888b6c34d430938e80599654a200de4f2cd912c7e5bd31e811. 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/GBHKE0600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b862e8819ce6ac834d111ec36c2e1a82eef9bb2765d895504062a2e308a2f57. 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/GBHKE0600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c52759a6f6b7eedde194f44d27d05ab31e21a585cbdc260b1b383d0dba8358. 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/GBHKE0800062.
Franck: Mass, Op. 12, FWV 61: Panis Angelicus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd69adc6fc7e76c6239b406d7f527f4e5f12a2bfc99269a34e57b066176f7a30. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBHKE1000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa463618598b1e58a3b808d78995f1093ce7bc3d583775574f923975000a0bfc. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBHKE1000083.
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