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 0x20566285c0e2a4f905cf32d6b74590b23334e4d589d86955313b95eff2fc6d36. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4b83ced-1e49-4349-b37d-9b6fc510dc87.json and https://artists.proofprofile.net/proofs/artist/f4b83ced-1e49-4349-b37d-9b6fc510dc87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stravinsky: The Flood; Abraham and Isaac; Variations; Requiem Canticles / Wuorinen: A Reliquary for Igor Stravinsky
Variations (1963-64): Aldous Huxley in memoriam
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 0x53f611570bd780bcdb5d3c3d2a7727fdf2981628ee2ddf26d5e52e31b5907497. 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/DEF059402920.
The Flood (1961-62): Prelude: "Te Deum laudamus"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ea5a9e2be27fbd57ffbc930afd9c33720c166757e0e03c87fd26272ff2f422. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEF059402901.
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
Evening Service in A-Flat Major, Op. 6 No. 3: I. Magnificat
My Spirit Hath Rejoiced: Magnificat & Nunc Dimittis Settings Vol. 2 – Dyson, Howells, Murrill, Sumsion etc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf36e9023d532e964570f2c13ea6a329676003fbe3952c3f435271bd634d18fd. 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/GBAJY8830507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8d234ade816b8e3d47994c21743f0505e2dd89f62ff606638fbc2f7acc8f80. 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/QMDA61457774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9423c301fdee17e71e4bdfc2c72a2dbd4f7f32b46fbcfcaa6880d46529b90303. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA61457775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85873b3abcd6c65c29e146c236bfe1de29e68daed4f84694916d9e195c82ce70. 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/QMDA61457777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31696b485b46e7a5f4d5eb91852b5bf76c862af752b7f8826899dc9848823eff. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA61457780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493b51d362f76fd3b86c3698a4675c75eab2d262328af9b6af3eb62a8834d515. 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/QMDA61457781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb542c0a9c9203bfcbb7cc198e918c3d7246c044ee9e32509dcaba836cfe03c. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:45:47Z), 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/QMDA61457784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7aed8be8e56cf2eb10654b9c11191a04488d1f2a0aeacbf4dc990db98bef13. 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/QMDA61457785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17300e5af9f440bb58bc6b3ad74db496fffc766f1926d6c44bc3899da50e8d15. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMDA61457787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40082cfb14639adc635b622aa83b86f496fe739a8f768ce87a3fc30cfebbe29d. 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/QMDA61457788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87764160c277174fa0df8ea42cccbb433172aa68a66eee32ad352cc61b16032d. 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/QMDA61457789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a529a9f979edf7511f843cab8b7e9c3c915abb267e7d5a8db94d057bdae03f2. 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/QMDA61457791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cf06f7fccdd7e65ab61514dd2302393616620eb7d8e703219c38fc94717933. 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/QMDA61457793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf9800a2857965c329305ee575ce096eb670f4f6cbec2f90ba1554ee2ed60ed. 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/QMDA61457803.