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 0x73cd18689a0e3e14e8480047dab598530dd80da2cf7ada75307192dddaced73f. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3801a908-48f5-4c4b-a54c-b6634ba689b7.json and https://artists.proofprofile.net/proofs/artist/3801a908-48f5-4c4b-a54c-b6634ba689b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Presenting Glen Gray & The Casa Loma Orchestra
Glen Gray & The Casa Loma Orchestra, 1939-40
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 0xc49bcb5bce679fd7e8e8a3cca8bafd92060387fe5cf905245637d6398cef81b5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USC9R8306105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf880085689575f8effb596196b4ed61fc0fd6d1f376277a99ff9363f4dc5225. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USC9R8306107.
Glen Gray & The Casa Loma Orchesra Vol. 2
Glen Gray & The Casa Loma Orchesra Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a27acd45ae390a1dbab1060fa33b000d0a233b28e3d501b4f869b7079ac2de. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DKEFD0200801.
The Casa Loma Treat (Glen Gray and The Casa Loma Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd359a9fe8e457ac00da9e5aaa3d62206e1d5922faf061bcdcd06e754f9eb577b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEA371241407.
Beyond Patina Jazz Masters: Glen Gray & the Casa Loma Orchestra
Top 60 Classics - The Very Best of Glen Gray & The Casa Loma Orchestra
Let's Dance with Glen Gray and the Casa Loma Orchestra
Brass & Elegance: The Casa Loma Years 1936 - 1946
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601045c54da3429cd5f4f7bde351421e8c79063f88e78afa51fb3a8968886ea8. 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/USA371133919.
The Big Broadcast, Volume 6: Jazz and Popular Music of the 1920s and 1930s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b7f3530f5515130e4fad2cb3bb74112409c15e86967092071c0b6ee746fd89. 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/USV351316625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f37782b5d713af784675e4805af10f3c64e3eda8ae3d815ea9fdbcd2392c512. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USCA29500390.
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
The Big Broadcast, Volume 5: Jazz and Popular Music of the 1920s and 1930s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92d4ef95c4250d505bceb505a15b391511e7515be2dfd7deddf5e7eed213d88. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USV351311353.