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 0x45807299eef3d4a1cc5dd273a67d40c9e3c16a64d09c9946f2fd254ca07b4f87. 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/dc21d8cb-dabc-418c-b161-9ebfce7717ce.json and https://artists.proofprofile.net/proofs/artist/dc21d8cb-dabc-418c-b161-9ebfce7717ce.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 0x47db629ac147923bd2b3d066dbb9586e348db582763292a899c1c5d7761c235d. 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/QZWFH2499663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c1293c440d17d5b5e2f87ddfc1c724876ee24de1b31840fd858a4f1cdb7100. 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/QZWFH2459106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc977fb6fe566da47979344aea9b914cd7caa2bc1a3cef902806b2091703260. 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/QZWFH2456969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255bcf4b6d9b2604436a9456df2a7c0c4ab7e477fb1e881a3e9800911ed9a65b. 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/QZWFH2473352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc148335f040d008cf5d201ebdb8a6341da9465544fbe36aea3cde3253cbb34. 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/QZWFH2473391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a42ef889d52ba69415c1a16c16069ca2367fea15147c28e1e10f4a4480392cb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFG2472041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbc004f4ff25a730e8e7c8c50023b8330cf6d90f41583935e5a86db884038d5. 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/QZHN52490267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcd9992ad57c4e5879043aa9aee9820e29e7d4e66651f10a32b0fba1176bb21. 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/QZHN52490281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd68dc8acfe1df7184746c3aae01cf6bde88fdd015dc7e58ea0f08b06a3800e6. 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/QZES62460815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbcc2306223c4f676be7a8b79e27ad75806512cd51db58b1282a98a75af77f5. 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/QZES62460816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1a8e7dc93e5c2f091dfc58db94399a8cea428e8afbf45e67b950d1e9df30bd. 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/QZES62460817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a554499fec6a515c1ba6ae9c7ee6c3d4fd88f7d4614fca4c83437238cb527c8. 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/QZES62460818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365392e7a08f07e124cab6641c2b9f9b837fbc452a5a61f9ecdf04c76dcb1ad3. 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/QZDA52484492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00955700ccc2937301ebf69b173dc834d83f76208d92d2da07b3499fc9511de. 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/QZDA52482270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643658cec3b28c453f8dfb9bbd7bfd587504dd43e56f610ed009054375e4b860. 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/QZDA52483660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d285ab5d777823afb6b964e404dfda9e14070a5d12c21aa22d4d21fa5870da6. 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/QZWFP2373611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b03c15234c10932625e4a2580f545fa9b149510579d3496969dc79cfc94c5c. 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/QZWFP2373609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75137177833716f9046189b3dd6cf8a5f758316bb5622809f3c8e87bd2da4bc1. 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/QZWFP2373601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a951688eb9d763a82abaea4297eb5d44631981d89044b4e1cd8a50e79049d8. 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/QZWFP2373604.