Tomasz Ludwik Stańko (; 11 July 1942 – 29 July 2018) was a Polish trumpeter and composer associated with free jazz and the avant-garde. In 1962, Tomasz Stańko formed his first band, the Jazz Darings,
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 0xc210c142fda424a265cdc7437d8069d4bc64dbc2dad9db682d234a4c171443d7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c7960b3-4b07-470c-be26-e61ff71a6492.json and https://artists.proofprofile.net/proofs/artist/3c7960b3-4b07-470c-be26-e61ff71a6492.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TWET (feat. Tomasz Szukalski, Edvard Vesala & Peter Warren)
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 0x6eaed3284c1cd43fd39279037ccfb017374c451bad39646ce6f1aaa7a9853138. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEB337507101.
Chameleon (feat. Janusz Skowron, Apostolis Anthimos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9f8170e31a18b4709516a43345ca0246b3b093c817515412c1ff104ba71b28. 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/USJSJ1011753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6b545c40781f631cb6f0ce2e2b8bee1cc9475cc6f784bd4211f58915e2d9da. 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/DEB339660301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea255636ef603fada279ddbfa292624d7ac81a08eda9ec5027a382245b1af1f. 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/DEB339660302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d82a420136632ee098d6babe76e29b17f70d9736a18407241af8a8ecf356680. 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/DEB339660308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab4b3d0511d33f9f832aa04808dc64c88895c7b63fb818cdd55775295b746ca. 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/DEB339660310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377f1f3b4238f44834866349cc7a4b52842dee2db6e5d6120de4ea3cf67966c9. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DEB339660303.
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 0x78f13372d19bd7717a2fc393d59d105ec340c242380804dd336aed0893fb5823. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEB339660304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3432c99331b117632f972f2ce44d740f0beca4315d44d52fa0dd1d8b5c9923. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEB339660305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2227cf4ab767e13a33f7238d90f1a257ec79f3e39f1df06040d9e602cb5f5a5. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEB339660306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c80d9baf89367f7e3f6d77dfdeb416f8b6f085e9689e2069ccd38b6e18c2be. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEB339660307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edd34a75b1e51b0dd828ff071bddbcfaa91790d6f3f00d9b1dc044edbd015f8. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEB339660309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36549cc9850ec8cc6eb126df418ecef5dabe062f150aeed80cc08e0985685f3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:41:23Z), 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/DEB339454404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89684d469bf8ab7b92ab2d739129783656e4e800ddbc6ba11e48a0e140f50b5. 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/PLC702207404.
"The Dark Eyes Of Martha Hirsh" przeplatany fragmentami listu do Rodziny w Warszawie (Wiedeń, 1 sierpnia 1829)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fef855abcf1dd6c1e8e38c437ad81e62b2c7a86371a746ed09ec701f48211d. 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/PLC702207407.
List do Jana Białobłockiego w Sokołowie (Warszawa, 29 września 1825)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3916d70099d732c0ec077cace18990ca1fff94552e326cb097db76a6dfa377ce. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/PLC702207401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f32502b7fe14522eab431d9ef376afe7477abef079be00ed5c0b2c0ac73d33e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PLC702207402.
List do George Sand w Nohant (Paryż, 2 grudnia 1844)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fa61f83835066bf44d998f9257ba4b7bfcbfc4d2e74579af0f2f87d4760a5e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/PLC702207405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06752c4f6ef459b86a0012c671ae32eacb5bb3d619754a3d2b022ec8ef7b998f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/PLC702207406.
"Melancholia" oraz list do Juliana Fontany w Paryżu (Palma, 15 listopada 1838)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe306288e01d59d983a6235212a09f55e27844d1e2cc8f2534f4471356b39d857. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/PLC702207408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed1618edeb77d8e1686d655fab679e4ca33a7eb481fcb7d0613b0dd82bcc44. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/PLC702207412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa932cbf0b9a75082ed4a9834ddc050772732c100ec29f19ae06c15cb31f6e342. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/PLC702207414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d01efc819532a3dfda0f956e972b548ba3c9bcde3c2306552da383708df3d1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PLA392500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c5fbe7589c52a45a176fa31d79d4800612eb419d68969899f93fe2dd6f4c2. 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/DEB331441902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d5e369d385fb9ba875363238b086c13f0c4a8c6dfe9cea2bd74d4b8dbacdc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEB331441903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76f285d68d47694f7989f6a0df9b9e908cded493cb00276386f976d1551c0c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEB330489107.
Jazz Jamboree '66 - Polish Radio Jazz Archives, Vol. 31 (Volume 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242ed85e488563cf56f1f51c3b378b48a257a8d8b6fa42f12001f00f09e28ac9. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/PLA391707607.