Barbara Jean Spillman (May 12, 1927 – October 20, 2024), known professionally as Barbara Dane, was an American folk, blues, and jazz singer, guitarist, record producer, and political activist. She co-
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 0x026d4319681495be109ad6636509fb1a625dcafce7459a40e0fd03037f8fede1. 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/979a730f-979d-4526-a8c4-2eeb353b0033.json and https://artists.proofprofile.net/proofs/artist/979a730f-979d-4526-a8c4-2eeb353b0033.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 0xa91dbcbee3fcf397c2592e962f4756f074a75bc1b4916cae9c48c3ad48133db3. 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/GBLGL1296819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0d8be3137a028f182e7385ebf97f1e6fa0a695c65f029b36540deaa477046a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBLGL1296820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9615143088040b97568e94a8a62fb3fabb4e4d53ce838758004481719e6798. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLGL1296825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b670acaa61c4e4130577324a72e0e526a309b62cecfaf474559e35399a4042b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBLGL1296832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1ca47e061040d0e3f0435abbbe8f35bfad28bf0b13c1c32cf44a619f8e83bd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLGL1296833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9334d4c73cf08ddf8da0cb54f5a1fe90844b40462de9e96227d50b18871f08. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEUE22322207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4b984f4262a6d1fbee720d7a1a745511a875bba30949e99ab446bd2096b5f2. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USSF16447102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc36cc85b5e247eb0bd02228bc865023662500d659a8ffdd9ee6ceb015f68c2d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM4TW1748308.
Who's Gonna' Shoe Your Pretty Little Foot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b1584a10bd04799eca31ed926b1929004bce5e60bc9399d11d33d7d3b4ee88. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QM4TW1748312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867a765d010343dd1763f21a8dded33891748501ce92702ac2ab28b8cb9abaad. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM4TW1748314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7545f5b0e81f28836f7fc05b04d2e41e8370357a1ddcddae4be0e6902e5e6c5. 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/QM4TW1748321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ec34ee6855e5a51a07e15ef6114eb3b8b04e8f013548e39279c73920a2d356. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TW1748322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca34afb46d5d5f0404f5d8e35110ded507d5748f670d700970a02e8ee8908f4. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/USSF17301403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ceb19e169ab9a409fef4a07fcd3b50ac5f913cde420d31cb1e9bdad49b8c6a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USSF17301408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a598abc57bd320ed548430af96dc906703e9ce7e3002ab552ef8bb77a688de. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USSF17301414.
What Are You Gonna Do When There Ain't No Jazz?
The Tradition Years: Anthology of American Folk Songs
When I Was A Young Girl (Digitally Remastered)
Anthology Of American Folk Songs / Livin' With The Blues
Hot Jazz, Cool Blues & Hard-Hitting Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24bf6248edd6347a37b5c4c54d0d1ef2f37c1adbaff0e028bbd10f9ed197c65. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USSF11722701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9adf8ae8068eceeca917064bc844b2506b5ff7234bec633c75587c8e00e63fe. 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/USSF11722706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6edabd9c8d8322ad6056ece1c4f2f00771bb81a6b348d9458d6d3fc70c40db9. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USBT21623029.
"Livin' with the Blues". Barbara Dane with Earl Fatha Hines and His Orchestra Plus "On My Way" With Kenny Whitson Quartet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737a76a6b9d67674d5d67c286a305526f40eecd98f71c1681c86f77fe1451f74. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USV351312335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5a85545360c96e4613bc2614cb1e3734d3b783b8fe813658c6caf1909637c7. 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/USV351312344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cec4b2f257a860e3cee8a00027e0fdfc8e66fed96b7151cc885d084be05a50. 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/USV351312350.