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 0xcfb14ac9fafc8fa6c277185fed992bba85413b43ad800121413880a5e62ec5ed. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ee74978-bf17-4bbb-8916-7c9e74c23fc1.json and https://artists.proofprofile.net/proofs/artist/3ee74978-bf17-4bbb-8916-7c9e74c23fc1.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 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 0x1c2834430bfd1c52344640a800979f1aa3e558edc5be598064b7e0047603ca2e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/DEXO52473422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c9411e7b0b1296410d88f49a4761990a7ca5af31e5802868fa5d6953146037. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXO52473423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e508e43955d7c3e41d5ebcce2216c40b63ac22fc3bf2aab75f22575328a4a7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXO52473426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccded1efac7efa04ea57a9973c451ca2a83d237e78bb3d979edf1a6dae42bf1b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEXO32234338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc305d405894b343ad0ebd97051967fa36bd04d8943c2605cab20fd83f8e355b0. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/DEXO32234340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3f11507429491d73536bdc1238e533fce949765af479061d60c988d35b6182. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FR0O70822968.
Sounds from the Roaring Twenties 1924-1926
Sounds From the Roaring Twenties: Ben Selvin and His Orchestra 1924-1926
Early Swing - Ben Selvin and His Orchestra, Vol. 1
Early Swing - Ben Selvin and His Orchestra, Vol. 2
Cheerful Little Earful (Authentic Recordings 1929 -1930)
Between the Devil and the Deep Blue Sea (Authentic Recordings 1931 - 1932)
There's No Depression in Love (Authentic Recordings 1931)
Dinah (Authentic Recordings 1925 - 1928)
I Have to Have You (Authentic Recordings 1929 -1930)
Am I Blue? (Authentic Recordings 1928 -1929)
Happy Days Are Here Again (Authentic Recordings 1930)
Francis Scott's Selection, Vol. 1 - Jazz Age Elegance
The Naughty 1920s: Red Hot & Risque Songs of The Jazz Age, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f48d8a2c6d1f3b79152f74bf6ac2d8c3b1746a86005b5a72376a528ae765bed. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USM2U0804381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bb02528e1a4ea563c30a1525511992db8ac5f2e0fc85f495108a694fd8eda5. 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/NLB031300042.
The Naughty 1920s: Red Hot & Risque Songs of the Jazz Age, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2085a384dc0c0ebd79dccab2033fff4003189e88ae8e1a2f1fff118b30317891. 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/USM2U0804392.