King Apparatus was a Canadian third wave ska band, active in the early 1990s."King Apparatus: They're back". The Gauntlet, March 9, 2000. Formed in 1987 in London, Ontario, and later based in Toronto,
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 0x939b380499e2a207c574c7de37d6f540b1987ccc7675435f25da5af00094d1ac. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1481f2bd-78be-44da-ab64-a814f0f3c0a9.json and https://artists.proofprofile.net/proofs/artist/1481f2bd-78be-44da-ab64-a814f0f3c0a9.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 0xe4368295a67d43d9f6414da41891876163a2640899fc554ad1262175a083c271. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US4ZV1010214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa736925b4372eaeed4614a72bde96e906292fc3e07223bff8c6800cbc678c7a9. 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/US4ZV1010215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd648f39724347a2415be05700c8f78ed33e45a8886d2a0c9d160efcafb777a05. 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/US4ZV1010220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffdf3140bce8edfac4c2ab8ba5cf5e9cdfc17d40ea8082e9cfa32d6e982ef1d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/US4ZV1010222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c55393079627d1a01b7862b1892f48e698a953e4a724577b9e21080f1a2c9b0. 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/US4ZV1010224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f83810cef94249a8948625c94ab8897b5fd99cd1ebb5f5a2d72a9de8521f39. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/US4ZV1010226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cda8d23f0c37689c968d607040053ea8031a49043c930533a3284302c3a518. 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/US4ZV1010234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ea2e16f53cae52844f2341b761e2eac008fa6e7aff7df93aa36988abb092d6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/US4ZV1010357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b67f173f229683ce6d908a585872fe0c5dc2c6235e201f65a31c2fcda00af00. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US4ZV1010360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b6bccbe079172556dda7d3394ea475d7866b62bc8bb64b8109c5846b9139ea. 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/US4ZV1010361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0526da4fb96af3a71a04d407f57710e892dc0de3a07a5a25b40b241bbfc6b8f. 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/US4ZV1010365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78bcc4a1480aa49551b93de54d657c7dd3baac2cf8993ddc52e10bd21c2c610. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US4ZV1010366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b6227bbe94efd86ff2877d4560756b565a055cfd187aa159887c184d13319e. 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/US4ZV1010369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29debafd6c26a657fe1043c239c2e7cbd8903007ebe67a66fce952e2a5f21b9. 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/US4ZV1010371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b4e0c97942e113c7ce1e8ac4d21493051af5dca9c1a4af86ae1a665094e1a3. 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/US4ZV1010372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223d9521b8bbb49b5077498782827396cdac4b154d2116c35567458acb6f8f4a. 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/US4ZV1010375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b9442ee8a66fd052485ca68d40aae79131f5d8d3530752d5fa2cfe8319a95b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US4ZV1010380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e0470c488058a98c8bcafe78a3bfffe0347146df8488ffbecf9e0acc9c7224. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US4ZV1010382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b32a4c14210f56ca84257ee8b3b6e84cf3e88798080cc265a163ffaee53d80. 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/USB750505201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce2cc5edb38c658b3e559b2e49e7d854b01f26e5e94768a6103d3c64070012c. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/USB750505203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07ce78301df582e89f93dba09abff65cc7e1c688ec992132452bc5e714d3e15. 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/USB750505204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e25fcd62a17401d333da0fec61227e4dedba13084ddd3b5a4ff4457ebe41302. 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/USB750505210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a1db3e02a4cf2c1508ad6fc5cb59c4fa6a3e667ffd03210ff294ea6ee917b5. 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/USB750505211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fbcceb91d151294726d468588bd7055365fcbc7407345a3d59327e0a707fd3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USB750505212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab803e1087c4847eed86fc907c156bc8c3122c7c0ea71ddc76f085af20164d52. 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/USB750505215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd169eb65a28223cfcdb0581e410f92799f34806faab3ede645718fd79793dc49. 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/USB750505101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5bf8fd65d6c04550595a00ea82af7cfe71d179856cf048dfd8b8690fa5c36a. 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/USB750505102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f706b6b69361460d6fd1f5ed85e84935e7393e1a1de1ee4472973040e284982. 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/USB750505106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9affba4121c844765e4341cf17d28d592c5d60db4f42f9a37827190c744a8e31. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USB750505107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61ab586bcd6d0c006f471ecd48ce6119f731cfaaf314fc2d76330e3bb6309ce. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USB750505109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a525ee39a2965f93d7ad55acc2e2386667b78aadb9fdecfc68ed9c36c344bd. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USB750505111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c46f1acec8e37bc19d3c45dc8dd00e2a111d4e8acd36212f937072d32083f5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USB750505113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b70bbffc2285d3dbe6091ce4d93a9857cce81a2c7afec82b9db2774a19c9794. 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/USB750505114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ee5c6bbebe9d6b82f64a42917257f0c66943a907cf3c057820f77e8068ad86. 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/USB750505116.