Thomas Alexandrovich de Hartmann (; October 3 [O.S.: September 21], 1884Thomas de Hartmann’s birthdate is generally stated as being 21 September 1885, but his birth record has been found in the baptis
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 0x6083a2fa5531aac052e1c99cb09214a5aada9b5f9c1f9127e93ef82b4407157e. 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/2970c51f-8bd0-4ce6-a431-97eca5e71bea.json and https://artists.proofprofile.net/proofs/artist/2970c51f-8bd0-4ce6-a431-97eca5e71bea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Complete Piano Music of Georges I. Gurdjieff & Thomas de Hartmann, Vol. 1: Seekers of the Truth
The Complete Piano Music of Georges I. Gurdjieff & Thomas de Hartmann, Vol. 2: Reading of a Sacred Book
Holy Affirming, Holy Denying, Holy Reconciling
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 0xf8b38233fc3d94bcea4b2b8180f8e5805e65b17a992cda43f4f9aeb107733180. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USDHM0702655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb073f6c487fd4b7b151a457fa75db64d14604f33f32ff248b41c4ff859a00e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDHM0702656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7002dd53810a5d52a5d5cde5c62e7c40c994864e824e059ed83722a4c3c6fe. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/USDHM0702657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4160e08ea5367bcda008a6a4f65a0a0078ea8d7354a0ccba24a662de980212fc. 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/USDHM0702658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510c644ea697454dc9a288c471a78665d0d1ecc23c9ca11aac5c8df06c948ee2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/USDHM0702659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0f96b584d0a14821728ffaaa697b9e5973435f88c24484476037324eae7654. 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/USDHM0702660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63a03ae6b8e7a3c4af84dfd329d0b6d5cd6da75feed5af371afd8ecd10eb3a3. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USDHM0702661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc24680d7b5ceec3c6fde094e68eef316fcb0259c145f86139d28e3fb982422. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USDHM0702664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bcaaedbe290ee94659687d60e3eeeada6ad1bfd75359cf99b81cb5faf5495a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USDHM0702665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836960565bebabd07e6e631e7aee6b4eabfe4103bb208674346c9dde6220b883. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/USDHM0702669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d2f1cb8da10359abb5e71e5669bd1a5da551a9932a4706034e663effb83726. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USDHM0702672.
'The Struggle of the Magicians' (Excerpt No. 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35cd1cd57a6ea8a2ea162d1ab8576621dfa4b3523faf39bc3561b09845494f5. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USDHM0702673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1049f6f5085de0cf924cb0dc195007d9e1f81a451360d96a307dc293d66129f0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDHM0702675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b3ba3fb392af62f8cb2d4adbc2d4d75a254ec48316f31470270e9478e13567. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USDHM0702678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1799a43a94114bfe6be3fd15566132b7db8d5ca93b1867e382ab8a265006233e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/USDHM0702680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf588525f44b7d3e94f4f0bd18c653114d9aa43737ff0a2bceb243701551d1b. 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/USDHM0702687.
The Complete Piano Music of Georges I. Gurdjieff & Thomas de Hartmann, Vol. 3: Words for a Hymn to the Sun
Three Poems by Shelly, Op. 52: III. Indian Serenade
Trio for Flute, Violin and Piano, Quasi Variation, Op. 75: III.
Musique pour la fête de la patronne, Op. 77: I. Polka
Sonata for Violin & Piano, Op. 51: III. Andante molto - Vivace
Three Preludes, Op. 11: I. Molto cantando
Three Romances, Op. 5: I. No. 1 The Lark
Concerto for Piano and Orchestra, Op. 61: I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5b5f68c40813ac3aba924642c638f3b8033a66b3ca43accb77678920048b67. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/NLSD92100002.
Symphonie-Poème No. 3, Op. 85: II. Stroka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7941a2b3be7e3242ce96cbaaccff467e07f33f27a49ac3e5ddffd077860dc55a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/NLSD92100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789e101441aafabfc929f9455134c0e3f371774a63e079f0bee18f41dd2fa66c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLSD92100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5b5f68c40813ac3aba924642c638f3b8033a66b3ca43accb77678920048b67. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/NLSD92100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e927564401ae75bb5dd442d8f15edde56e1d6dfb76a7add68cdc4083db19601. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NLSD92100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9a457a02519f50ef9107ff7ef340b84fb4f8e5e91808c95b89ac7f8a70f666. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/NLSD92100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66053e9be5a53f4ca2625e492f42bc46d1b0f3a3bd38f9a4546c599e02abed50. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLSD92100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4787674645a9960f0d550b2c9b0f73d033e8b36385f6aef2eb6026f1fed5d18. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLSD92100001.
Thomas de Hartmann: Orchestral Music, Vol. 2
Meetings with Remarkable Men (Original Motion Picture Soundtrack)
Gurdjieff & de Hartmann. Por el Cuarto Camino
de Hartmann: Violin Concerto, Op. 66: III. Menuet fantasque (Tempo di Minuetto)
Violin Concerto, Op. 66: III. Menuet fantasque (Tempo di Minuetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4301281bfa7d74c075d32737b119341747015034708d4ef86120e0417faf5e. 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/NLE422407603.
Violin Concerto, Op. 66: I. Largo - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ccec22b52ae81c6d71e99376b7c4c09a14f16d1a275d02d983a48d7af13d32. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NLE422407601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2d29102da5390eed7a9292295abe76ec5b9edb1b30715b9c3962c56f3561b0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLE422407602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4301281bfa7d74c075d32737b119341747015034708d4ef86120e0417faf5e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/NLE422407603.
Violin Concerto, Op. 66: IV. Finale. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d4d7e69e56a826e58990e9b20e458dbf17450421ecef34f481da4ed7ab87b7. 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/NLE422407604.
Cello Concerto, Op. 57: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b5490ffe8e1233e5a06edf735074e6413eff63310e8c6c6373e2eaa5427f50. 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/NLE422315901.
Cello Concerto, Op. 57: II. Andante. Solenne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4a54b066de290e2a93fe89f2addce547326385b36b8086fc3459e01c97a423. 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/NLE422315902.
Cello Concerto, Op. 57: III. Finale. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56c1fbbaaa51247030adb9a2c45a1cf60885090d898a55840a72837009027d9. 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/NLE422315903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabc9739855a344ee0e865a52ce1336ec468751f6ff83c5fb001d66c2c73bdd7. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/NLE422554501.