Acumen Nation was an American industrial rock/metal band from Chicago, Illinois. History Early career Formed in 1988 as Acumen by Jason Novak and Ethan Novak, the band released several cassette demos
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 0x70a0c91f095427b7521360f2fe1647c9adc05e0c7fecf31799f1d7643dabc832. 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/d68771d0-7557-482a-b73d-ebfcc0359f54.json and https://artists.proofprofile.net/proofs/artist/d68771d0-7557-482a-b73d-ebfcc0359f54.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fe06757e0bc6aa75ca062d9dbea86df9248ef3faec240b5237720b3a24a1e9. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/US4Q30400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a3927c8fb68fce166e384fb17eed201b4f47628dfae641958a1f78a67f7a3a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:39:07Z), 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/US4Q30400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ae2bc77a0385de7834449d0e3f22513e3df0997356c69857e138ff70ccdad3. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/US4Q30400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb477934d8a406dad7f7497034b15facdd803a4c7d6a29a84f575d36314a4d2e5. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/US4Q30400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3a2fbe8514c09b7fbf48a807f1bc5863de14844c77ee1a875d52a04f240e69. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:03:11Z), 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/US4Q30400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7b4f6357fee7632ac1c7522033342f5b97b5f70b37c482e950c60899ca8e10. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US4Q30400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaaf55dd87aa75d508f7c51f626678ee493bde31606c0096af498d2e965772b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US4Q30400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b68b71c6c21b6ec6d79ce13bc21872afcac816ec00651865eba76a72a6c4fd. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/US4Q30400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1417cedf616d3679fcfda4c42dbf4aaff95815edde91fd5e7687ec4179097fe6. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/US4Q30400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb78a4607adffcc113c0979f165b41acd5c05944d08d10b0aeb1f8264d56459. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US4Q30400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6bedfc0b61d47981c1891cdc6b6cd7bb176d359b3b220c3152781d6e4d5528. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/US4Q30400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf536de7c9abf62b06887b58e10c9c93696adcf1d389bdde14c6a309a64e9bd16. 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/US4Q30400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2301d3a50a6a14ef554e431bc34b64c3d4ec6be10a189d6d7923571539b8b8b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US4Q30400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d60888f8075254633115ca37478a188cf4a16f6a0493475c8eff509ffe7812. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/US4Q30400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbcbb0d8ac21484cb42222ffbeda0c9f4702cb268b889f2c0ed08eeade9d62a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/US4Q30400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf23ff2a5bc0e02ff84d79f2c5c53f0ebe96ccb237fdae9c1b5ba9a02f4b3a6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/US4Q30400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d91223ff08248988727bb62bac5276782ee50250185c89d8b115d61cba7818. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US4Q30400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8265b91ee3c5a8a00ea1b678c4b780087d910e7fc6c433a2c7666ec35a810bd. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/US4Q30400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cb5c3789feb169af84826d198d41e57d01db8b60ec99d7120e5a636f935796. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/US4Q30400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7ed73e38f8fe9466c21295b33c59577e12b70d31ac798df16e9d6149f03e50. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:45:33Z), 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/US4Q30400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7832b85eaf5978e4a3b7f3f6290cfaf15075fae45d245cacd8a13f62073228. 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/US4Q30400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8deb926b833f5b7b692aebf6953b719329dcc95a5dc8d01d538515dae05ec3. 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/US4Q31010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae3b0d9bdbd801424d41a2077a2c02fe68dc6e27588ab01741a09cbbc93ad4f. 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/US4Q31010007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556a6b00a65c3d2fbe5d9de634ec609eace77d7761c30530ec05ccbf4c925997. 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/US4Q31010011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfc9a118720d17022e41d9c4d7d19d189f5867e7b67cbedc4897325e3f5a0db. 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/US4Q31010003.
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 0x98bdea2d1877e44e6377ed867772c48c65426b0ec939b7f32ccf27a0e5507e6e. 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/US4Q31010005.