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 0xf0e477d85d818c055f3ea0e78499a95c6d462f10b5927fc64dd47f9336fbee02. 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/12ad74ee-594a-4614-9f76-3eda294e783b.json and https://artists.proofprofile.net/proofs/artist/12ad74ee-594a-4614-9f76-3eda294e783b.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 0xb6ba5582c8142ebcb9b731a57bf4af45864418a172607736fdf70952898de7a4. 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/INP2X2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b0b854bc10c8180ea133d02e634973d12114f0ec5cf562142ed3cb965cffd3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INP2X2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefcba02ad59c549df39e05205eaa01b303034d2317311b41bd9c8ca197841e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INP2X2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a93b536110f0cec59e3168b2330adadc3b5ed1079d29fcf79ae7b4ab91b3ca1. 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/INUM72500448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b379abcebd257a0a350c983c32b89c3ff1495c783b98c7edc8855779f8c9f3e. 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/INUM72500423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9303f5848c8e230edecc80d1af2533cac4b4839d11660335e02cdb278914fa1. 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/INS172500641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ef2bfd9c30b34f6ebd29bd964818a75082d45dc4a1c3a885802fcb1a595f2e. 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/DGA0R2482136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137ce8191438d80d63e84c18b03b1cff12a498ce6eb7c696de2bb62c3ab0271f. 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/DGA0R2482137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7220a21d5ee3ab9b85b3ef7153e5b48f209981553673088c123dc8f9087aff. 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/DGA0R2482138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943a86ec73d8d1b7e0a4fa1129a7a2bb7df5e3228f7e3e6730d69b6dcb3d929. 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/GBKQU2486999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d63f059a47c2a432a5d20c9ba3cdc13a6bfafbc3f1ccd68326be173b7a89863. 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/GBKQU2457538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f5ccad770b09084be8e333a1e45c7d081eb0cc927c64a153ae14e0af3f1606. 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/GBKQU2444537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e8b7d2879542aa81a053b850f891da56e9166ef7f728d74dc5b1054f7aa8d6. 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/GBKQU2425478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd620575d328cae6cc58a223271c1074390d7722d9ef827e210487c6ef48cf2a. 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/GBKQU2413350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048024d6c4a1bfc3d84355cd1d28cb2c220d5c7cd94385e439dec339dc30fbf9. 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/GBKQU2417040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0477187392d5528ef15513cb3fc24f8af4a0a72609b312969c05dc9cf73c8b0. 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/GBKQU2417041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7c9b9f2122866435bbd3cde36833bebf15fdf464d06c0ad025187336d35d03. 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/GBKQU2417042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdfc57a3adae36ec428583ccc9b5d079d81a456f184172c0f66869f915615cb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2417043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4c8f4f45729afa355625f016171236155d2d988169d3bd2bdd9aaaea30f811. 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/GBKQU2536412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacadebd4d9054562c0c826ee06fb9fe79ca457077a3328cacfa09e0c9cd0dd1e. 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/GBKQU2536413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e508e618a886f60af976b24d29208f348f099c561d6892e746ab7a7e8579d1. 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/GBKQU2536414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7281915a9d8359c3e2e4a8f5a915926766dd5fa356c34c1a6e2898e7e55328. 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/GBKQU2536415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504b62176f39f83ba547220392d1acb829909d14aa5cdb0dc3328520e2565dac. 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/GBKQU2536416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5250633ea2a7b74997d85f7988bbe584f68d9908bff47c4965e0b9cd2f3ed1c. 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/DGA0T2407772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7c9b9f2122866435bbd3cde36833bebf15fdf464d06c0ad025187336d35d03. 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/GBKQU2417042.