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 0x00a81d35cc0d7425217904649e397b4e0fb29cd8f1fd9747844972ad3b354ed6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/526d819a-85b7-412a-b2f3-2de2612c37db.json and https://artists.proofprofile.net/proofs/artist/526d819a-85b7-412a-b2f3-2de2612c37db.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 0x782b27b62d290228a4147c1f8d9e42f4e645ae3669eb5558da7eacfea2484903. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMU2258178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574eeb50618ff48d92ba05caec2db69f71173f659754c2d6460bea775be49699. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMU2258179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf30660ff5a23b825a605ff26ba6d552a1462ee1979a4ae9c8eaa9a33e200afb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMU2258180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6adc1bd6451f5161dd8be0de84bdb8bd1a8dc42d0179ac195082dba395d85d1. 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/QZNMU2258181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdca9c036e7b11b3e17c67eb687bb5adbfe828b0ab52a40097828cd4c33a08b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMU2258182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191e6a4f59562d6bbaa1e06f1fcab197632d6d9da369ae48911de6ca3281d51f. 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/QZNMU2258183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a490b508934f9657513e81af651e5d8757ad7ad88beff5a891cae8927b681ee. 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/QZNMU2258184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f0708b5f62112fd8c7f2b49cd1ba4819b750ba4571540051c9d3a273e9e380. 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/QZNMU2258185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ae266e91f9db6a4e452d606000020c4c1c6a2bc9f2a2efac8255c5b09a45d1. 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/QZNMU2258186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c2645574b2b50de6f1c1f92777372724d5f3831778dd6590754a08af7a38c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCGJ2377802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54336b857c553ef1234c8ddb813f67877b11b9cd2d3613a713a081b1b7e3cc0d. 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/QZJG52397613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2954977bc6d9f6c9f081408005fef5eaa9363f09029cdbca638b98957959f1b. 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/QZJG52300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0919ecd84d95ae68ffac86cd6246c5f63071859656ea27f485011a49cf1834. 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/QZNMW2291420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d3c741d769aa2ea729f242c11b9b440345e2529bd6baed03180ab40283156a. 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/QZNMV2292417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26e77266db8c91578d7e95e2096222ee142752988de186b23ab751c832b2c2e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNMV2282705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6461f60f2b4bfdd6c3f4df31f699f158df81ef580e41ac6191ceb81abdcb9c24. 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/QZNMV2277973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e74d355863ca3d1c832295b6469330c7a2d48066ef362a0d39e62866da748a. 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/QZNMV2268052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0036ab8a1c7ac69cc9fcb95f3a9ac77a1bba98aff8463f2a3dca79b7ddee2b. 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/QZNMV2268053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa950c14b459e9c090ca91676fdc3cb783724eb53160b82e9f2e652b2be32f6a. 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/USLUU2200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa668934c81b6fdc5e5ffdf47c5c6c2a343fb0bbdf3beff9c28acb1e62a4dcb71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USJ3V2337402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af1b66320b0151fac964d96f77db172b0f63dea5daaf154a86b5be551278824. 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/QZJG51964712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2a31e2fc3f2a2612963b334a6c6b83c1d1c58b378fb2745fb0b4d4772c2950. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMY2199171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84719617d6dc729657523d604f15f85397ae1a79a4558eb69fc9eee02c29cd5a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMY2198330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6442141c4d2b5be6defee813a850146df5a3d3b6da863a347911255d6b34a333. 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/QZNMY2198328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310bab5d9016d7846a4ba83594000243d895d93c4d4496c238047f3c3c93ea9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNMY2198331.