right|thumb|200px|Stanley on the cover of 1922 sheet music for "Carolina in the Morning". Aileen Stanley, born Maude Elsie Aileen Muggeridge (March 21, 1893 – March 24, 1982), was one of the most pop
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 0xe2ac0d837874edd7bd9b70f5bc846c32fd57966678ae00eb10b472ead8fd810d. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29e05e4f-89bc-4b6b-a862-ca235f89a47f.json and https://artists.proofprofile.net/proofs/artist/29e05e4f-89bc-4b6b-a862-ca235f89a47f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
What Cha Gonna Do When There Ain't No Jazz
Comic 1920's Jazz Duets (Recorded 1923-1929)
Aileen Stanley Popular 1920's Jazz Vocals (Recorded 1924-1930)
Everybody Loves My Baby (Recorded September, 1924)
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 0x6599e8a5113d6860f7ea84121e49ea9cc2dc3ed344f110ce34098327fc40cd6d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDHM1426477.
When My Sugar Walks Down the Street (Recorded January, 1925)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba3f70dff23ef156cecd4842a896a345e32b6a9b2bda7c9531055911ba62f63. 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/USDHM1426478.
1920's Blues and Jazz Vocals (Recorded 1920-1923)
My Little Bimbo Down On the Bambo Isle (Recorded August 1920)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebc0a3b61553b34d79ab387c7b6352f363a078a1b4ede0d99e2520b5c2444fe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDHM1428494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2a20af5e65f78d3ac6127e68c216df6a325e94abc000a0fe09625870f24678. 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/DEKB71657997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f412d174675763c1c28ba788356a4701c006b4164d8eaea8972ca39cfb2668. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLB150900995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d64f74cd641963f8ba85e179cc57c503bf2a15114d8f8f26baa521999e4f727. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USXTG1100797.