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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d9cb650d178788682095f06b8037f1c4c4c35bc6415a4e7b539448132a5f97. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3a3b346-e438-423d-9a8e-934b0faf3839.json and https://artists.proofprofile.net/proofs/artist/e3a3b346-e438-423d-9a8e-934b0faf3839.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1efe7e4e9eb2eb44e5acdabf6d7b469ca055962bff3ace6b33f448935339df. 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/JP92N2274644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64172f555c0d674cb2b6863add63cc07c2d24245bf740230cc2500c2c01f51e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JP92N2274645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8337fdc70ee751eb0de2e93510911907073aa5d7d3e56e87a807beafee3da62. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JP92N2274646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8973f9dfe6fbf7c666517178d242bf295e585dd4c041a4ed1a111a6874fc81f3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JP92N2274648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd068768bafcf8ce8c375349c9e890c57c097cdb920a9fd3beca6bda6b2f4d1a1. 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/JPB602302095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5456e9dae0fe50b100b26547d272f69c1b0eaf0c90c9bea9ae4003ec98b0f8f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPB602302582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a59c4cea6286eb5ad413d6c4efccb6ce370ff9b0cbd19101fb8ad6d8702a9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:28:23Z), 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/JPB602303002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4617f7b0a980776fb9ea724ddaa77e358209361f75d462870803dae2c854aea. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:18:35Z), 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/JPB602304729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004aa4b32403abcc6c5023863432fde5fb1f6730c8cb872989c5807cf92f134. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPB602400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc627861a7d6acab96ec41caf01b5c40069a6cd016721d9dba71bf13f30f798cd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:13Z), 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/JPB602400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d1c70a7a7a2bd964aa1a8ed9a587de55799ba0924a95e38310225f9448e007. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPB602402208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9ee6d23e839ec2b5dfeec69c16d16d6f4fe8efe0dcdab444cd9dc4417bc980. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:10Z), 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/JPB602403286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c13e992b1e0f566878eabb0245c9055b5c5aacc8601c478fb26e52bea89ed8. 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/JPB602403310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef35116592eb7b0c79025c316bd32464ba4562b8fdf058eda4bd149c34d3ed9. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPB602403311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d16fe46f518553a8d808536541d3d3fc12fb4a53472cff71e33be2fc4a19619. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:22:22Z), 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/JPB602403287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc627861a7d6acab96ec41caf01b5c40069a6cd016721d9dba71bf13f30f798cd. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:25:38Z), 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/JPB602400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72997b6955f921134f6e4fbd1b0d2a4cd34aaa63ced6926ec8b274c22ee6d7e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/JPB602403309.