Markus Stockhausen (born 2 May 1957) is a German trumpeter and composer. His recordings and performances have typically alternated between jazz and chamber or opera music, the latter often in collabor
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 0x9d9f4e67f4a1a979ec507534ab5387eaceba42fded95eb154483fc9bfae5f9f0. 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/f24ab0ed-aeb0-476f-96f3-b7b30f5494a9.json and https://artists.proofprofile.net/proofs/artist/f24ab0ed-aeb0-476f-96f3-b7b30f5494a9.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 0x8bdb9fd51c63a7f525b251f617b5339cdd95a88113bf154e29cd0791004c8f97. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEB339970401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e940eaae2ceeae06da35006143c2372dc0eec5eb60832e25e4fd49403dfb2a9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEB339970402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2703aeb2420a67b5f6234ff7d0c77bc3ee7efcd9e4ceaf60681d682b969cdb8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEB339970406.
The Enja Heritage Collection: Invention Is You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4305771f187c9fd6da81c167b567d27324d349d9a5f4d9625a8db054c678be3f. 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/DEA590406801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01fd03d16d7f270ff1308eb16b7ff58d258d472e49dd49315e5ec1e63ba726e. 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/DEA590406802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6148c8c5a9e699ac43ab389f3beed617a5ebc46ad2876baa21bd5194da41fca5. 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/DEA590406803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf592721003b85d97b661948965958fc91d4fdff1c756d78d5e50f093c06fb2a. 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/DEA590406804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476e7c951bc1616f99ed16943b7380cb6f57921b53c1f07c218a87ebf84b7e6a. 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/DEA590406805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2520b82d285b6814ebf48544e33d59f383cc6770b5f3f2b1e473bb29442b68. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA590406806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f352e659c3b94fc00f82a0168313a6c6a76cc725cc188eb8e7c19afdefc7ba3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEA590406807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba757461bb9479cb7976bb90e97734781b8b06b692eae62f8a182cb810167e4. 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/DEA590406808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce296f55da2d55508e73c6bb98babe93c1c70c3113b642308c9e3b0465fd53e6. 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/DEA590406809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7206292210f426aeefed03ac8d3f7668697fbbe6811852c416c49f184ba988. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA590406810.
Markus Stockhausen & Tara Bouman: Thinking About
Symbiosis - Werke Von Markus Stockhausen
Portrait For Tara - Portrait For Tara VII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe33fe76cecce7eff0001389d6c37bdc97c0fe71c0ac53dd73392bdfc1627500. 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/DEDP30800225.
Markus Stockhausen and the Metropole Orkest
Stockhausen, Bouman, Scodanibbio, Nauseef & Ottaviucci: Spaces & Spheres - Intuitive Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81806534795f005e1afcaccdd748bbe12c21ad259201d966e786a04ad08b309. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEB331547701.
Flowers of Now (Intuitive Music Live in Cologne)
Explorations (Masterclass for Intuitive Music and More at San Quirico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8986bc03347e4c18c82dbf27226fdbe506cfed24b708dbff8a39f1450750ebea. 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/DEE861701038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89d2ea19880aa23184a15c4f43b116c6df0250c0aa0031252630d75749d1b9b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DESW62300024.