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 0x4775a2c0e6b22513a89c81925c9378d58391307b07605f379d2792b03d4eedc8. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1538bc79-8b01-45a8-b9c0-158d7d201f25.json and https://artists.proofprofile.net/proofs/artist/1538bc79-8b01-45a8-b9c0-158d7d201f25.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 0x03cc2bb1c3685f51e3d693f0102782d3b049afc415940cab558d8e7e146462ae. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GXF972476514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7fcdddca68e795b73b965364337f776a8cb705c47a342e45a2cac0c8e12266. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:18:17Z), 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/GXF972478028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80a4065badc047fb44c1a10eabec4a895b75cf8ab3b7b4d82dd50c3af4f6d04. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/GXF972472760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6208dc6eb39ebc81ace0404fd6e0e176e6547eac172afc5ba44ea00d338ea5f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GXF972487145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc268ea3f2e5e35fb7e5a75851aec3d70fb5ec148ecf764dfa6207b141832c467. Chain 2 (Bitcoin): anchored in block 957685 (2026-07-12T09:26:00Z), 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/GXF972492221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91489b2fc09563083f3ecefe1ed90495f6ffbf45747fbe64232de6b184c223f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXF972464318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe9dad7346e937d01ef59423305a4ebbd5a672f067629341175e1d93880d7d7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GXF972424272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf86334658d65f61fc8ad5eb1e88f6d5651fb0b733679e879714afe103639e1. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GXF972455653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31503fd8eca86a635db4f4070aa2fcb49e3a06c4441112199e495a4b09df060. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXF972439405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef38bfa0067f14702e994e2530045cfb93d9dd7a07509d67f643c86c892176a. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTB52597501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b2aeaa2e7bf8426f7177698207d8e36ebf303a5bc2be6e2229f183fbd30917. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTAW2527226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bc52e84b6a513725ebbafa428d0ffe9414a6fce33c0c7fe1a9645a3febb44e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAW2527227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503d2a9b1db471c5c525624d2c3375d794468b1b884100248066f699eac0f79d. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTAW2527228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aa3d74854d463e8767d0ab7b36ca71a0def6d458ad97f71b0a2fe754bb5287. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:23:14Z), 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/QZTAW2527229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa7e9b67cef8178791f51a133cf70f93a922a72a0f5cb49d45afba1f43faada. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTAW2527230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb59a5c7259fc2b79d42ab664d86302f369bc929af2b8881f68347238087bbf3. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:40:50Z), 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/QZTAW2527231.