REDIRECT International Classification of Diseases
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 0x83b5b06ab1c6bfb07974783ae56fa541ee31cf07c4db72137d20ada9f95c7917. 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/cf429c3a-50ed-4b52-821f-4f9309ed6159.json and https://artists.proofprofile.net/proofs/artist/cf429c3a-50ed-4b52-821f-4f9309ed6159.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 0x501e3077e7e5ff01a81641d7bf23ffce0966b0a3e348a68bfd34462bee8846bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UK6822109818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9fa25be0d2bdd16d1d7fedcf3029db49418a468a4ea474bf969a7fbfbcf491. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/VNA092003673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296cc84f3abb06ae4a2465a65ddf10fc98c01fe98b34059acbc4a4e0063b7fc1. 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/VNA0M1911732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a277d0dcbf6c37b418b936ea5e0e84bf06522439c8efb5facc9941e6f0ff3a. 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/SGUM72100520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57caa525b1cbe5abd7a3969a20ca612e28c6a4f5636a9f8d0f8f68ac9233189e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX872102647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc8c175a5f3fb23978400ce21284c304db311ddb46aba67bcb71eaa7bdc4f09. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/DGA092201214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054b00a83c860f8a98d1ce54e1c379becc9796edd5c13fc4c13aa3408a51616d. 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/FR10S2406022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c0e9ce8e592898d4b0880683da429ab996ae42fbf7c7a395476c3fe4084a1f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA0Q2326520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaee00566d96e64d7c01fc7feeb4ae5bdd10934ffd8177defa8ed8df70ec9d5b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/FR10S2406023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7a450e0f5a53269e409dcb5e062bc8bd198be1ce84043a4f4b0229d9731a8e. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/FR10S2406027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71041b9237747311aa5e5c7f80c4ba5dbc0dcfc6b4dfcf2b3c5d41a773b261ae. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FRX282479017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feb5d11125c4c0f0ce9e29dfc7e8dc97e40fec9d6e7f8b93e45a4c8d24840f5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FRX872425497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbf7d05c0742357d0560bae10f97baca4ec46d4e0fe28cf1ccf5367c27896ac. 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/FRX872471196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65506e5fd7632041f7348ca6ebd38841f36417e4ce91576d145dcebeafb6f649. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/DGA062416225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a04fed9629f2f8463d57b3a89b22824ceaf0c79a7646322066dc2155da89dde. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/FRX282588299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e7267426b66bd422646c1323a458e24041ee9137ea64d616f3c109bfff26f4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/VNA092502213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d6ab32bc8ffdaba95f431d1a37f0cac5da30978f00ad23018f335fd1bda891. 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/SGUM72000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb3aedc033c94d32afb2997bd95cdf5884fcce7c9cf2ef5bf9f910e1bd369c5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/SGUM72000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cf99156bccbd83ffab82b467770839619ad204770c6a36c0aa3b71fcc821c1. 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/SGUM72000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfab2903c214987d77eb21244e20c8ed5cab8dc186ca211e962d7a1dac0a0e2a. 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/SGUM72000225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00048e95440fd773d80566864bd00f62af4ce44f062e436ecd32ff356af9f320. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/SGUM72000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc9ae86b5a4b362f8e98fe662b5af869bd696851d9cc8862deef0f18922c587. 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/VNA0M1911611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc569c3928acf2a0414d448a381bc06951887624f5ff1837f85264ad7418e0284. 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/VNA0M1912051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54574ec36b41266a3382f98e6b51218ce9f8bee37d2b60b07104dde935d610b1. 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/SGUM72100176.