A cog is a tooth of a gear or cogwheel or the gear itself. Cog, COG, CoG, or The Cog may also refer to: Science and engineering Rear sprocket of a bicycle Cog (ship), a type of sailboat from the
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 0xb1dc27d06190689e910fab01074ae8d32dddd6f41721683b0eae1bf95afe250c. 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/00e1972d-193f-452d-8913-b6b1972fd266.json and https://artists.proofprofile.net/proofs/artist/00e1972d-193f-452d-8913-b6b1972fd266.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 0x9e5ad4b560d5eb0189a300714c64d64eb0057784ebf575279a3950ed1561a93a. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/AUMEV1909221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d56bc13771b28c63fff03ef2d9088a9be09277d9f34ddc0faf6177e2aaea32. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUDF01000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2bd5e9c42448377d264aa307dfc3945318db5f4c6f29452dad2c2daa56b207. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/AUDF01000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e98fa939f2dd19f46e28d65b0fb64611875be734b7516c8a0a8661358830fd2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUDF01000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0152f88ca48ebc7f9a110f39b7bc744ed02d3a54261aff4882c8af5332a389. 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/AUMEV1909222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec194e0d7fb9f2a8b8932df66289d39ea53138f2008fdd2dff130fa5d491a81. 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/AUDF00510030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05179a71a2d09dac0ac9fda9c2dc555dfb50ce67ac88fe40d24b230c0986585f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/AUDF00510050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aedb9fab948a362b4ac82a72db4a40b0829e481a57055fb17e5df948bea4894. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/AUDF00510080.
The Doors (Now And Then My Life Feels Like It's Going Nowhere)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1348812f6938befb3c7efa573432dc5feebca53a174c05ab6922fc779a6f1df. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUDF00510100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34475033661fb60eb445857acce7274a446b94aff7b68d0a52cd3081751600d3. 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/AUDF00510010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb87d6da4382fe475041e81ff8582dba903cced201297a13d6233141ab48113. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/AUDF00510020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec194e0d7fb9f2a8b8932df66289d39ea53138f2008fdd2dff130fa5d491a81. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUDF00510030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5139972cb057eaf84c54dffb68f2eb2002bbb06625a7402438f959fb7cf7ed23. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUDF00510040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5c71fb304a3971e0cf537501657113e2de113eb3f15dde5d802f08e2bcdd63. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/AUDF00510060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d39ffcbeb0a66ff4145c6168a179dc75e175e956eb61f64995b4349df718fe. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUDF00510070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aedb9fab948a362b4ac82a72db4a40b0829e481a57055fb17e5df948bea4894. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/AUDF00510080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1739f77c8766f732c15de11ba1893518bf3edf44c57819601274b51a29cc6195. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUDF00510090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1348812f6938befb3c7efa573432dc5feebca53a174c05ab6922fc779a6f1df. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUDF00510100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b5b53bb813292b74a046a04e25803ce6909e744260c76319d54a308f6738a2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AUDF00510110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5c71fb304a3971e0cf537501657113e2de113eb3f15dde5d802f08e2bcdd63. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/AUDF00510060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d39ffcbeb0a66ff4145c6168a179dc75e175e956eb61f64995b4349df718fe. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/AUDF00510070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5554473fd33546f421dae1b699c0a82a54eabe0e099ad3ed2029b163b6bcc076. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/AUFR20700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc345ff4d5d98311b8a97caa7dded6932212c85874f82a878419c11553ceda94f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUFR20700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c8b7db6b89eed3900c7cb508aab1d4a376fce3d6cd64f661af572d9eaae56d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUFR20700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4632752663d8979a96a2852b97f2e54243cd76126e193cfdd6aa23f9f68c39b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUFR20700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56171a363860148bf3f61cf1eef7f162c5105385c67e2203e96609abca803fe9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/AUFR20700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5f9a2f9301334347dfc110f66d6fc04aa7ea15d49073ba8766d812efed7bc0. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/AUFR20700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5554473fd33546f421dae1b699c0a82a54eabe0e099ad3ed2029b163b6bcc076. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/AUFR20700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969306fdcf04a752d0cb237974ebc42da895640034a12fc4ac22a473f5f8721f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/AUFR20700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352c28d39148fc0b8b9ddff3f70b11d92856cb5d15b4b476c6c8cd1ff590dca5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUFR20700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18165338f546af0f28fc18fba36894e5d766b31865882dad19581b76e76454cd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUFR20700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c78b80a8d1245bffbe4bb084ef8546bd8dcf5e40e46a534f59d8e040d652ea. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/AUFR20700021.