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 0x0ee453332fbe8952231e221ee324936c5ea2fd40b03c5e2772151aabea134fff. 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/20ff892c-c794-4e94-96f4-24a2a6bf4892.json and https://artists.proofprofile.net/proofs/artist/20ff892c-c794-4e94-96f4-24a2a6bf4892.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 0x282c28dc8166a502c98f7f0075737a14a3eec959b3b4a42aefeb0dab1518ae22. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USJ3V1463043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3bcae05a37e1a00186281bb68006fc438e680b20333cadbdd304cc3049a779. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USJ3V1463037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56920ca04667e3df3c9d8d0a294a2215654a5d63ddc4af0842896d07f5ebd763. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:42:50Z), 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/USJ3V1463035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeefa11477e28154f75a5b6af8a4864a11f61ee0895467f208931ab3b2eda8fe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJ3V1463041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762fa65fa51fe4fc17b6f58a38f5ea0b5da2a1df3727772d3e5773a03bf5e386. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USJ3V1475028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d93053924c2058d80fc37258ee6104684f15e11df1c45de062eb61e18fa98b. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USJ3V1801404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dd67030c110b4a2b595062de381b80df002957d6caa38685578f572aab9483. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:17:52Z), 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/USJ3V1801405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeea9a39bb7c51c7f966d60371839ce6294b2948a4da9f4ad9a176e071d5a513. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USJ3V1801406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3067e7788616d79044144af56eaca0123c1dea7f2ddf243b4d136e2176b42f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USJ3V1801407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68c396b59f610044e6902ac25c183ccfb1fc8a9365070398fd2a3fcc192787f. 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/USJ3V1801408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c14e1d608081bfb840f1ead8c74c363fa3d478437ccd7e8e91bc646650b379a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:29Z), 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/USJ3V1801409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88955b8ebd97f05972249bba2b2143b1134b4c7aca1258081164f89ed76293d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USJ3V1801410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3239f3ac3c4d6f9daa2f2e1bd0d13397d522ee25216af9f2b37cfd080fd5472b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:49Z), 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/USJ3V1801411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385ec1f15434643ad184e2c8c8fcf40fa69fc9851e83a035d510b7ff4d88eaaf. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/USJ3V1837026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b487e37a81500f81ff3e6014e4a855dc5180c500163396690b5199b0b1b165. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USJ3V1840704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba448bf2cbc4eff504f08364ac54a1611ae1e7c497005b00bad88ae1c4d7a014. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USJ3V1840708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce753f1017029e9b327135b9c552b3626bb5f5df8cd6fba450b37124efe3d63c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USJ3V1840711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3735ff7345773e636182c1a4429f94329ea3a0040954e61c88136e427d8771b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USJ3V1840712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8225e50afd6d8c8fbca39074879ad6683a59329e7d9eb467b5be746139e828. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:38Z), 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/USJ3V1840713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e516ff11285c9469bfa16a0997c0f8e92eb7ae4749366021821c08bbdf7c1dc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZMEN2310963.