thumb|right|Thomas Blachman Thomas Blachman (born 1963) is a Danish jazz musician, composer, and judge on the Danish version of X Factor. Biography Blachman is the son of Henning and Annie Blachman.
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 0x5715dcd6f84427dd70e249ec61a9cdac16a92f97b7c96fe8f37d9aa5583aa7e4. 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/5a2b0a5f-c46e-470c-afb8-2b9de34c015b.json and https://artists.proofprofile.net/proofs/artist/5a2b0a5f-c46e-470c-afb8-2b9de34c015b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blachman Introduces Standard Jazz & Rap - Vol. 1
Music For Home Hobby Spy Cam Surveillance
The spark of life (multidirectional counterpoint for easily bored brains)
Movement of the open mind (how to cope with everything at once)
Theme and variation (music for television)
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 0xb436fa82e1e58491aa63c693f7f228cde30f4b6dccfdd0224aca2b7a658bc02b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKEFA2400102.
A Children’s Walk (exploring the world in slow motion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd22d889d69c08ddc9476a15c76f1b654ee16f95822f87d11cdf9852751dc7d1. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/DKEFA2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd7ade9b1dc554fca1af1cbb9907298b1ba1452cf8527bb0f2f094a614f3459. 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/DKEFA2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b63dfec0b1718c0591e5427f8f6f4328015955bcd284f654372d5844ea3311. 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/DKEFA2400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6be916a5374652b6bb607be45a454fe977cd1df3a909a0ce1342b6faf2c76e. 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/DKEFA2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc722a1694c590fc15db896b050466f99887467763c0ea396bb9d5aecdb25d27. 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/DKEFA2400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29a65f3b983d5bda097d33b21be44dc28cbd3e798114165cc9c2d82f8d55187. 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/DKEFA2400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc91478a6cf59897fb33e182dd8167a8b1fc975b0f692664f1df075964d6b41. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DKEFA2400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2817937beffce0239e65fa014d07f20eb3596f16f7038bfb11a0c53ff4f81e. 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/DKM282000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5e5973547c3c321a667aa69042724b6714fc5508b47b82279c95ebe805c620. 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/DKM282000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aceb5d4aabc08394b86753797ee8c0966dc28968fb25c4060b4ab736ff6a36e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DKEFA2400101.
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
Improvised Composition As a Goal for Human Behaviour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec5fffc21eca53df161df5828f643d2a514457033d06aec14f0e9b3627ddea5. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DKEFA2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae4f1b12f78f1876b91d7126987b0a8cae8ad0b981dec2c729063d96669d4f0. 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/DKEFA2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda917459a5a1c417ecf2317eaf7470d33b04085941928c118f8dec7fe956c55a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DKEFA2400107.
Avantgarde Muzak in the Lush Palm Garden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad843462de357819986039f4da33133e8bc1856b45da931be916ac176cb4673. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DKEFA2400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cac012f9d33ea5bd4ec26ae0fb54c1e4d0119c7022db8a10bd9d02ea1ac7299. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DKEFA2400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7120b89fb4631e0d3669b85fa0a1cd34e41b8dbefe955bce91fe4cb3f761aee. 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/DKEFA2400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeabd3057c774d2aaed952ce149bf8a1ac4c29c1a9bbc2cb3ddd5275c6afea4b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DKM282000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750fce3d9a3223ef3b93437e01b822622baf4fb1fd982b3759cbd83948a6ef5a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DKM282000104.