A Hessian is an inhabitant of the German state of Hesse. Hessian may also refer to: Named from the toponym Hessian (soldier), eighteenth-century German regiments in service with the British Empire
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 0xed9d636aca9c5b82c889a215fa04dae6c42c291968177c5263f582f6030bbad6. 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/13f68f49-fd18-4547-b7c2-489924a6e1e5.json and https://artists.proofprofile.net/proofs/artist/13f68f49-fd18-4547-b7c2-489924a6e1e5.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 0x13f955f8b2a6e733b103c02a8c31d7a7d3b8b1b0b0607ee02d4a57c21bc29383. 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/GBEWA2208070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d311271dd4e045deec2441bf32a99cdc0ee10fa9691a4368fc9bc279d91b48f. 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/GBEWA2300960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24be5bfc2b9afd6cdabcf491e48c09883290ddac466530822d1f88d94addc7b. 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/GBEWA2101620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b0b5791aef3f90e91e34edd220583463c138c708e97b3acdc03151d6c1c5a0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBEWA2101621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc237738ee586285454a27aa07a569a65aa9604bd5641de2000b3347b80a51edb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBEWA2101624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111b95628e7488d406edbb71c26159ae07dbb4d72c996c4cd6a73251685c4c09. 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/GBEWA2101625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f45a051e70bf8009b94003630b323c7d8cfc952ac9fba795bfbd51a91d70f9. 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/GBKQU2421295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb48628fcb4ef07a73a6f60b5f0c8b0b296bf70e397dda95542760082d068bb. 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/GBKQU2405092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c3bb43d24dd7211c542f41e15d42854b45d30ea9e39730587ba590154602bc. 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/FXQ892300347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c1afe332a4fa80ccad7e8e7856842eb7bf2aaf80bba65b62354043db3677bd. 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/DGA0L2347268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a41cef5a964d5852637eccb5fe277b20e0e4c9995e80bad65ed79409fcfd2. 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/DGA0M2324690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a10bdb8d91c4a8aeb24e0a9f467a7aa5ec40b5541c03c2714ffa82b2f23705. 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/GBKQU2382639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd996958f9d1708fa02163ad0b83240dff76e8aea555d1fced56241614f6c0c7d. 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/GBKQU2296627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f3ad77b15649389397fa42b5621dab4b013d70fab60cc5e39bb7243c7afeff. 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/GBKQU2296628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77453dcc357e9d86071103316311b17cb7948687deee6478c0decfaa66cf0c66. 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/GBEWA2203590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6389c109a6635104efd1921aac46db1fb22daf9088cdb376a5ed735632ad996. 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/FR96X2259988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bcb1178d23924344d7a2dbbc2622ffe6d55b258fd1bffce1d92091a6b60452. 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/GBEWA2201584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d19c7502354d6aeb278409f238980185bba40bfbd00433a12b83402388b15d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2201548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1883a5913104a5dd608a6e79af02cc15bf3ed8e2524c68795aee66557a9c9569. 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/FR96X2198230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953ff61f4ca3f993ebf30628d22fbe8ee064d4932bf798e1ceb66c7e6dce5623. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA072103170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d2ec8dcb497061a0ab8bf72105da820cae86ad41c27cb4a177dfe9d4bcb906. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:47:14Z), 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/QZMEN2094288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9205672ac8ffb1ddf11d8ed1b9755ab475d783ee70a3c884875b62448036c18e. 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/GBKPL2007898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81e7e93ec50ee18931818097510e9816ed51549f7c4e216e06c4138ac6a4e65. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKPL2007899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfdbf23b0f7f801e90e8a4b84d0b714224a210377804cbf0768446853813b67. 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/QZDA52062980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85d79901135af234bd6c0191556f394523d00695678841e3117d064c8f500e2. 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/QZK6N1983571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ad4aac19f834b80aa40d93ae9ae8ee1c0773260e4ab63a6e5cab30355b1337. 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/GBEWA2201485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2074505c0561de40488df773b057d6c28217179f7697d986b0ce1c7e696b9f3. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBEWA2100377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2584dd0ef45606289706c05f71232a8045f22d54859b6f5d641881ab9a706562. 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/GBKQU2413748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a1e8101fb16c1373e6e19aba816955982e2b0605083169bcd259fc9fb099a. 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/GBEWA2400545.