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 0x1bdf554f5d88236ec9b4aad13469112ab41ba2693d115597e7be30b6f673a880. 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/02f3f1dd-ceb9-42ff-a303-eb8ff4226fdf.json and https://artists.proofprofile.net/proofs/artist/02f3f1dd-ceb9-42ff-a303-eb8ff4226fdf.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 0xb317e517a742ab51b980a3fcc16e268f828ebf7fa95b7ceb7185aa0ca3b7a2bb. 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/SEVJH2401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1e5fd205ccc2054493ab975432d81bac010a2446365eabb7a120096c7f0e36. 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/SEVJH2401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b6e75b796390f9a71e0fa9e66f26e4d2e5040ada6e17d5795b7af5c4ad29b7. 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/SEVJH2401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7910ff8f0662b06fac990e5ed7745400b9a72df796fa0535ab4e9b60be6e8237. 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/SEVJH2401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0a50591cb1b492c1a699dafd118482be9f81d16a261dee9fa5e7938c49332f. 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/SEVJH2401105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d6fb779b8a060ff1600f6e50d7a9732a121b2fc84fa21fd9df2db892980ce5. 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/SEVJH2401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a17640eb39fd585f6b2b989b739dbc7be2548456963c3c24e6be879d973257f. 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/SEVJH2401107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab9ab16ecc2ea7570c2424c53dd593e6c330f4ad889b565fb1cb0fea429324a. 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/SEVJH2401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d27217ed6e927b0cfc21567a30bd5ae98fb232e10e35e52264ea6b83ff4ac21. 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/SEVJH2401109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b896c62cc97bdfb6cc7ae8266de5e94eb4b7c26510cb12b49ed1d04c532a19. 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/SEVJH2401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7414f2718189b32b7329fb74cd6b1ea74364e94e1e3980061dee2f108bd6374a. 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/SEVJH2401111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf072984a7f70fc9ed8192a967f93a75123def72fc122abe147c80b4a4d673b. 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/SEVJH2401112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1232e6213d45536a1bf40d8d8db7bc26532e0adbbcadadec68ea37884e15bc8a. 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/SEVJH2401113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689eb807a91a8367c19c8aa20a2c1241414ddcfc833c4620e40daed106a3f98a. 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/SEVJH2401114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91666fba413d59ccce8529fb02b49b986e91edd77d1a53102c030d2c6a8108d. 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/SEVJH2401115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05454ebf41e6d64556328342f567262c87e9430c62118a31e8600f40390996e3. 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/SEVJH2401118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173b9f7cf8c814e9392e1d30f75a51e6437bab19bb96500a5c70dd7394498a23. 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/SEVJH2401116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45d840a41a50f215d5e720b47d84f646a751ac3a7a3439d399c0a3a128a1c00. 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/SEVJH2401117.