Margaret I. Little (21 May 1901 – 27 November 1994) Margaret Spelman, The Evolution of Winnicott's Thinking: Examining the Growth of Psychoanalytic Thought Over Three Generations (Karnac Books, 2013)
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 0xe2b1e9ce34a805204ba893a0182f2edd32b994e05d856cbe26d005ae56881794. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e80f337-dc3f-461d-b7cb-07ecf600f1bd.json and https://artists.proofprofile.net/proofs/artist/1e80f337-dc3f-461d-b7cb-07ecf600f1bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trio Sonata in G Major, Op. 1 No. 2, BuxWV 253
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 0x7a9615cb47cb809bfe0a4f1779d85f66598a85f1c0d16bd08ad4eeb9a2a8e8a8. 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/USPMZ2312302.
Trio Sonata in F Major, Op. 1 No. 1, BuxWV 252
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc669d5e18bf0b885ed429d360472a080405a168a4c8d0b208f186cbfdceab7. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USPMZ2312301.
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
Trio Sonata in A Minor, Op. 1 No. 3, BuxWV 254
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fd9922d006fed37025ed4c9e51abd44e99d4271080ea7f48d943ffc98e254c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USPMZ2312303.
Trio Sonata in B-Flat Major, Op. 1 No. 4, BuxWV 255
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1f9235b183dbd25561d730191a0decf9d595eeecf2f3eb3b0ef9e2e57b07ec. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USPMZ2312304.
Montéclair: Concerts for Flute & Continuo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d30947d6216c2959c127cb02ba735d59c70a54b8820c2563c5a4db68725137. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAJ721468501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3076f845882eb36e3c8052768ae01de7a141153cc341697a566e3a2d8275be66. 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/CAJ721468502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cd8386c6c450510fd93dfaa59e8c1efeff53f584e93f92f72c75334ae5f9d9. 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/CAJ721468504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b67f4b220cc8f89eae2103728c946b43489e5d1ed8ef7041433b4ce32319f5. 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/CAJ721468505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c414c98ee02c772b3350ba8b0c52d28dbb7ed20e0754909967ce211b091515. 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/CAJ721468508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed6295ab7bc1961717cfc185ab5dd3ad5f6bdf529dbd93c1017aaee806b4ea3. 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/CAJ721468509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d28e920ef0760d466a283e36133faeef545fa8bd0cbf2e9be322ca7ac45c75. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CAJ721468507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d114c7ac203f79e6fee1a41ee03d48bc083e1120f0bff268184cb7ea33bcde. 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/CAJ721468503.
Recercada seconda sobre « Doulce Mémoire »
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10488ec35ca7b753e516b51629e3ddb1f7f30a8204fd817ad71a6018fa505fb. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CAJ721468506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf601f429649745df0566961aa0e189753c07cd3eb5a4c2f1e07f9e94b2456197. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CAJ721468510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9be23b4106c7aa401d3cd096acab5f12a8e781a77fad8fca75388b5259e6b9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CAJ721468513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601b34f67a52ab80f3d738607ccc9e640e37df916279dd45780fe08c899ab169. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/CAJ721468514.
Diminutions sur « Ancor che col partire »
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03caf2da9025059fdc324c09a6acb50094610ce947526aa77a55e9addade8319. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CAJ721468515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb74c57701c2a28c71d76966c0b7a26faf7834506f0e1296372acbc20179e0b2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CAJ721468516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba7d7dc516355fdc91ea738d9856c2b88270a47f97f5ee3b27a0973f50d3f9b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CAJ721468517.
Lost Is My Quiet: English Music in Purcell's Time
Come, Ye Sons of Art Away, Z. 323: Strike the Viol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e68470bb524ab53953224a299ac4845e59085cba57b400a35bdce76ad41c9f1. 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/CAJ720330013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50260d6ad4b0171bbfce6aedb03709dea776dd8ce1327afebf98f822994297c. 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/CAJ720330014.
The Prophetess, or the History of Dioclesian, Z. 627: Since from My Dear Astrea's Sight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfe15c951ea36449c71cf7a9dacd5e98cba255065adce5542981c12ff73173d. 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/CAJ720330027.
Welcome to All the Pleasures, Z. 339: Here the Deities Approve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc235bee0367b5d4dbbe2fa39e17f42036d3f0e9b16eeab8dd88d57ade490c86e. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/CAJ720330025.
Pièces pour la flûte traversière, Livre 1, Suite No. 2 in G Major: I. Prélude