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 0x5a4773013f00c1dbaa9af16f78eb2c3c4d9b2a64f4393b25c3abee9fb96649bb. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1a175f9-2075-409e-9a37-b3f2d0f0b7c8.json and https://artists.proofprofile.net/proofs/artist/e1a175f9-2075-409e-9a37-b3f2d0f0b7c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Terror Night, Vol. 1: Industrial Madness
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 0xa3617fafdeb505f3eb008be2d02d625b107d30624d3a4f2430e360e9d87a198f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/RUC001500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3158a0a155744ff33687b2a35d14ce45ba76cc7e883fbf7e481de7fb06466b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US7VG1447310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7911596fcd767e7ce70279392511a0b84406b15f023a15656c5cf4da8818dbc7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/US7VG1447311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0499a50572902bc27a55243ef09730254400d0bef8ecba84089a99a53404c4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US7VG1447312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d81ce1025e7fc0ad1f2667feb74e8952e9dcedcb72e6b4b4aea562f943ca6e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US7VG1447313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74f2f82241409251ac82d71057a1168082cc34e6948d576043be208cf53714d. 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/US7VG1447314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0f009d5b53a7377286939472e7475f24dea6e8be5d0e28e110157c25087202. 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/US7VG1447315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e57901cf6d796f45af9d16b59d74bddd5d7138520d5117495fbd7a423cb7cc2. 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/US7VG1447316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468163ebd46e078a7a1019b2e44193bf9bad485527bf6bb30e4633ed6e47e4b1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US7VG1447317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e76384baa0a7d8817bb0ea5a5788db36c4ed6e97dab63695dfc9c3e7a61b964. 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/US7VG1447318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a2feaa91a033f2cd8d470691b261e47c918aeeddc4c8b49664d111311800f. 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/US7VG1447319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc587f50a1a83a8e3a8aab3b0bb8324c528dac4cc3d7a3655f0cbba3430de8e8. 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/US7VG1447321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c52e311edab935de549b5a27039737d2be2d31b1e3867dd97f731819b1e62f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG1447323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dd66043e11fbc019be68305a1770cc8f995e8704fd153a2a8afaf120fa3d1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG1447324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cc81ced4a25378d2086a3564079775816a6d95b86ae902f1488951d8695fa0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US7VG1447325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c614d1a2908828bb51a65b1b9b9a18608d753ef31d3d61c6e94051ec2b414. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEHC81200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3fb4a07e5ca4881f3e86bb9dd085bb33789f24fdfb8614183e54879c516edc. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DEHC81200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ce5ee7fe739a04852be12666354a4bf0e041f2aedf70bf1840319d4eeacb65. 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/DEHC81200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cbc8982493aadc63d491e241a484be59ac37cdc48150ea33f3916417bb9f9d. 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/DEHC81200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8629d3881660d6f351515a188ebf1c2584107946f7941c0bc292a7bde9553543. 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/DEHC81200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdf0977d795cc53895eb4edf746ee777f8b9c20c65d57ed46c74b36488cd38c. 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/DEHC81200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85c82b2366c57a7fc2e25cbc874788bff4148428d6f120f82ba3f9ceb863f34. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEHC81200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8c8b350a22dbbaaa97503e4e46b591306ca212d71d40ab2fdcdc367b8ec8dd. 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/DEHC81200311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ec76da21b8ae794be749bd35049229ec2d92ebe66c8d769997305984dec00e. 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/DEHC81200312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e385a8f5e9810b5d6062bc26fdbd4ca2dd22787da4085ee7e0445ebeec298fe. 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/DEHC81200313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f765da82040d33a8ccaaca3ecd6489500c1d7b69c003859adbc798209b3ec5. 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/DEHC81200314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334eca126bf999e1fc5812044fead699f58807fa47a8e0e8f9a05adb0bf8d09c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEHC81200315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644a71cf33d6940d4d00e02db65910a78453dbc61771e77b92e03bdb6387eb15. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEHC81200316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc235c992bf643dc1f0ee7631eb7bd3b386c807a44a66709f0d387fccc03d8d. 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/DEHC81200317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc5a7dcddfc7df93a21f03906f34714c5087890e7a93801d76e7c571e0a448d. 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/DEHC81200318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4359647b4fea3b8188495a2365ae470fd1aba8d3afe01f4bc38f61b9699edd3b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEHC81200319.
Tanz im Kopf - Chaotic Rave System Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f2064940e46925bc1219f52539ec7467be008fce3b97456b26430bc790d67. 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/DEHC81200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0e15cbc9a41b4d0e9a05d60bb081b927ac334712fb3f4c6b2afae93d563fe0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEHC81200321.
Terror Night Vol. 2 Sounds of the Dead Future
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee422e042dd4bab04517bbb74e5d0ededcb2d653f4aa5ee66d4759220623c2c. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/RUC001600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7067281e5732fe080a97dda40673729ff52fd08c2f87f728aed73d15067fff50. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/RUC001600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4700763c301dbebae130496ac122f9d1cc65822b27c4f03ead480feb8a9a19c5. 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/RUC001600049.