thumb|Abstract interpretation of Carcosa Carcosa () is a fictional city in Ambrose Bierce's short story "An Inhabitant of Carcosa" (1886). The ancient and mysterious city is barely described and is vi
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 0x8fe1d90cdc87da1cbab7d544275d1490a1b826e697dbf69d4f2302f513222e6a. 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/6e1d6d24-28cd-4c23-b093-c1111c1cb066.json and https://artists.proofprofile.net/proofs/artist/6e1d6d24-28cd-4c23-b093-c1111c1cb066.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 0xc9d4b1acb15ae47fc732aa2d69c851d66a60946fa62156cc033357b547b6283f. 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/GBDHC2336203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf81df871fe6a1f7f82d6555ad35eadc3f313ff93a4c05bc1970eb89cfeacf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBDHC2336201.
Heritage (feat. Will Ramos of Lorna Shore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9a050133ea00b9a80b666c53c0228a395b5256d8edaf6bf10d02553f9cfca5. 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/GBDHC2336210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96445714b2d4bcd5ee133c3814224ab284ab85d4f525cbe20f1e5cabddd026e7. 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/GBDHC2336228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a4c78628e8ead096fd29a975b02f7078a7dd2044c0e93892f063217b4a1c25. 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/GBDHC2336214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d4b1acb15ae47fc732aa2d69c851d66a60946fa62156cc033357b547b6283f. 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/GBDHC2336203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf81df871fe6a1f7f82d6555ad35eadc3f313ff93a4c05bc1970eb89cfeacf. 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/GBDHC2336201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9a050133ea00b9a80b666c53c0228a395b5256d8edaf6bf10d02553f9cfca5. 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/GBDHC2336210.
Argent Justice (feat. Suicide Silence, Emmure, Abbie Falls, Acranius, Angelmaker, Bodysnatcher, CABAL, Carcosa, Crown Magnetar, Paleface, ten56. & Worm Shepherd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7a11a8e016285ac60e498130ab452edd825b0fe39aa65607faad4cd5fcd878. 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/QZES92336544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ce42984a02321d6b99ed0411389866e4772c16d00d6d8b4017a5d214ab390e. 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/QZPLR2248652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea8e18a0d0a8cc5437aa03ec65f5f69db599466be37e1fe4bf7f2190c435ef7. 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/QZES92336545.
Nylist 666 (666 Vocalist World Record Track)
Beyond Deviation 400 (400 Vocalist World Record Track)
Beyond Deviation 400 - 400 Vocalist World Record Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1ff765a318890284fe074834236fccf32af3d0127cc73e630637926bb060a. 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/CAE562123701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c9131257c14f09950cf7e3262899cafa0dcb3bf2866e3e9da3aaa0ff9d452. 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/FRX282127651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bff94e4c813279ed95a3c7ff4405047fc3d636fd01345b5890cf9d57b07c52. 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/FRX282127652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfe8738a04dc03a24422194e9a8ae48990228b0559262c1e0724c61d62ef294. 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/FRX202142929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b620bc198f2840a9d55fa64cf8356c629fa4a2aac09a90dca867f4392c320e. 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/FRX282127654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae3b16aff28f98085f5da5167bcac197d31b060cc60fad8c334639a3bc8a392. 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/FRX282127655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8721f736a5c486ceaf20a9b7744585b8f0b04cb89b3836cce24de25eebe16f5. 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/FRX282127656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875aca393ea6c77ddb951dc81e4a9c962d7855aac1789d6019d424bc0ec66382. 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/FRX282127657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a6f5a436729d1d5ec0dd9088b7d66c08a509fff463279c660c20eb4e44ecc. 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/DGA082418315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b80f95d076043043f6f79a4570c0a3962a734453313427782ebfba0deac986. 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/FR59R2418451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08b52d719c031cfba7d609a78086c51ca75772a04a2c10f154ef9ca8e9b194e. 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/DGA0M2355677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03976dbb084261a9f66cb9cf464bd4a3e2d522e1d0a9883b2bba891871759adc. 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/FR10S2336823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553921508d2d343704fca84cd15c25a458f9c53062654a73c0dbd7c09bfa0087. 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/FRX282214214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf29f79a8ce284137e51c21e8c6a341f7404ab33e14dd5067c17ddf579785cdb. 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/FR96X2289448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae3b16aff28f98085f5da5167bcac197d31b060cc60fad8c334639a3bc8a392. 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/FRX282127655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfe8738a04dc03a24422194e9a8ae48990228b0559262c1e0724c61d62ef294. 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/FRX202142929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b83a673fc89159f6407820127cadc850f82ee3622399399256346858b6c0d7. 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/QZNWR2011681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c54301dd2eddf86df3e7d542f3b0f55677a80267c05cb26666c6ecd6d95d378. 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/QZHNC2074170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50abdde32191a38feb6cc17122addb82ca3b769f5ed7009ec9f69813445bcaf. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:50:35Z), 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/QZHN72038618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a5ef52f630c0fc51a99ed7932ff88b950c9434eaf2a051697cce50fdb7cb8b. 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/QZHNC2074171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50abdde32191a38feb6cc17122addb82ca3b769f5ed7009ec9f69813445bcaf. 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/QZHN72038618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd5130cb7717bdb08bcb67b3cc3ec0203e93036e2eb4193c921abf3d5c1fdc4. 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/QZFZ22425544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79b0869f60ac3db9e370f743757785aabe99339385064ff2211724ef50e6f42. 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/QZTAW2355308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3905b180bfcdca131725998fd82cf2f85236c7eab3de727501e69af27eff4e. 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/TCAHX2483469.