1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcfd7a264f0bdb3a5eb10cdabc356ffd61464edf9d44d31f418eb6c78c7cd95a0. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14f64d7e-eb7e-43d4-a679-f374c6bac0ec.json and https://artists.proofprofile.net/proofs/artist/14f64d7e-eb7e-43d4-a679-f374c6bac0ec.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 → block OTSBitcoinBlock must exist at that height 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 0x3e219fe7d8a7a8f3e2230cde58b02a2c781f4cce281be043886f79f6f947feac. 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/GBASH1553904.
They Are All Gone into the World of Light
The Culham Motets: I. Lift High the Ancient Portals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d42d346d1caa0cf15227a7759f1efd58f819563c0cd976ae3c5543df5a47310. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBASH2163301.
The Culham Motets: II. I Saw Water Flowing
The Culham Motets: III. See the Place Where God Lives
The Culham Motets: IV. From the Hand of the Angel
The Culham Motets: V. Your Light Will Come, Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e766c0c7738970ca0281b077e9e7db90b046771820a491d7cdab34d97a82f63. 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/GBASH2163310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ae6a8dcc633cfe5768373903d1a1e0a551c8d06dfc68a4a86183e3b47390c0. 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/GBASH2163314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672636ecd1cf04c7d24911a4f2b7fa87f3ae142abcf0164a9850103030fa86f4. 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/GBASH2163315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ede1f0bc208211ad51e171acd9c639efb34add66ea81269f6a5a0146988261. 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/GBASH2163316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3a5dcc6d07d4861a6dee1dc79bed8555b3971dc055cfb34cb77871b4a46156. 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/GBASH2163317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02134874bb4eb97004186bc3b7b6446c26565c690892346aeb5a10cd0d981ab1. 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/UK4WW2416501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac15321af0c942b4159aaac75d73ec814211f754854ade934e3d5f967a848e0b. 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/UK4WW2416503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d7abab0dcec349bb4ecdd4eb055edccdb629d236f5bc112e55fac00bb04d91. 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/UK4WW2416506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ebff06344f408b10c5c3c550ca7afa461e985a76f46d266579370c2317df60. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UK4WW2416507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922b20bd5167c005d5fb9096028f5cd3d368af229bf8c8d6809a2dd7505234ec. 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/UK4WW2416512.
Black is the Colour (Arr. by Blake Morgan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98138bc07e76a1defd9e162decf2fb05d8b451c5c87b320f371b7acb3b85429f. 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/UK4WW2416514.
Wildflowers (Arr. by Penelope Appleyard)
Auld Lang Syne (Arr. by Christopher Moore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36477bdf2b33825a434b1767b8fce7804b5a39d5c25f626b1b283ecc1d053662. 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/UK4WW2416517.