The Nimda virus is a malicious file-infecting computer worm. The first released advisory about this threat (worm) was released on September 18, 2001. Nimda affected both user workstations (clients)
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 0xef96d313c96cfacd1c32cfb12011fff5a5b48ece629e37767d1c6d478060e42a. 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/57ed2212-6cb1-4e8d-a5a7-a3226af25708.json and https://artists.proofprofile.net/proofs/artist/57ed2212-6cb1-4e8d-a5a7-a3226af25708.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 0x6af40a3d381fc8236d282084c8cdb1de39c60d7115a9128279c0451f5d88e934. 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/GB8KE2417306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f373124821988e156e40d209fc3373d9e69e666ff81c0ab3bdd636d646fa49. 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/GB8KE2405878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c35351cdf6a49a9a1965e7569d5dd1f9a2330bfd47952649ef10edd8925f97. 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/CA5KR2426020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee62916b99afe43cb7c9348b8a6c609e15dfa64028e1d9280203e86a22282341. 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/GB8KE2328102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3465a8cc82d0fe6cd3f03383ce021aefcff38fe532b008734a232019b6e1daef. 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/GB8KE2323915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96b5119d0b5360aaff5f1dababe378422a96560a7babc6473e584e1240443ce. 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/GB8KE2302199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38117f103470d50e6d71073025c973e821b83675d693a6c84e180e356787894. 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/GB8KE2302200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2a73df30e3692e66d8f4c174313e52941669a6bed61599e4689ecad3a88cda. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GB8KE2302201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf33f6425b24aa4ac71aa4089af5473f2c1cf2619eba258f6d089c2822c241e5. 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/GB8KE2302202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c7ede32db79123db8d234be98b72af745f480a37c6ba6cd36a181df5f80ef2. 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/CA5KR2319401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252e540b52adfefa474bc3ab367440b2dcc2ce861a6aefcfaaee06a32e9f779b. 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/GB8KE2214245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7133b13aefdf1746001086f2f60388cf49ecf14a14f03ce36d66f21011d9a3a. 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/GX4Y82200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0729eb37632c609c11e214d9c4e14f55322f2ab6506786d7eb56cc3a8ad0392c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZMHM2297265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99389ba226997202b49ee7debecb7307570a6d8e3d545752f19cb9f349b62a40. 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/GB8KE2200885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79dc8137d7e62c526cb1fe4b97b684e3f4884c570d01293669c3a12672e9d07. 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/QZS632174769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa852db873deb66cb8cf72aec7fa40f8b849a9c959f17b71d0d31f6d6a161f9d5. 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/QZS632136773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5fce3d06dddfad36c628cc87aedf78fb5c4ade2b7553e5561b44ec3044385e. 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/QZS652192412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152bcf05f5b81d0148abc2c702b295ef9826d0cdead9ae1594e2353a257b557a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:00:33Z), 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/QZS642133395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6affff7a998353813e43c4a81927941e5dbbb23d5879a94b72a5cc730d56ca10. 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/GB8KE2162377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2533041e57fd3d9a7a4ba031d873b00cdf0b4b092da961f096b65f858513b0b. 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/CA5KR2350003.