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 0xf2e4862b8b47c4d74245c38309e1aad91773020ac1b2bb6f102ae2157de9a104. 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/d6ade361-9e38-4c96-9613-977e24a041f7.json and https://artists.proofprofile.net/proofs/artist/d6ade361-9e38-4c96-9613-977e24a041f7.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 0x57d25de3d887ee6e245907e8c0fd416f328eb2f24bd2eb0431e42030d34d4b5c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:10Z), 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/ITP531100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bd796ecdb4fdbb3595a0dfdb881a4bfc0a7fbba992ddfc75f6b942e1ae1952. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITP531100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3851060b733ce6d338245bfb90eea2bcb5d50abceefb4dd7fce14c73efbf811f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:52Z), 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/ITP531100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d25de3d887ee6e245907e8c0fd416f328eb2f24bd2eb0431e42030d34d4b5c. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:19Z), 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/ITP531100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0f509cec5aecbd387a2f4b7d34851e3db7dc77732c91fc9331d32ca2045143. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:42Z), 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/ITP531100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f212984e1c2b17aae583cef7b1947e439c8a8bbb4580f09d2aba34bf016e12b. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ITP531100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3851060b733ce6d338245bfb90eea2bcb5d50abceefb4dd7fce14c73efbf811f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITP531100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b0a13b46efe20cfd9cf2c038c44d88950eea8a03dd89d709fc6eabb47bc438. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ITP541200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760c67cc2bc4ffd50ab336dbbb0f6923c3d32cecc76190609862f73740874c06. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:24:31Z), 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/ITP541300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcfa23da6e8c972d26e0958bf164066a6cb99ff7eff93bfcbee5a53a82780b6. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:52:14Z), 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/ITP541300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a11a268499181bd32ad1546116414f8f06b22627f1bb828b09d38d71e2cf8a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:05:29Z), 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/ITP541400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6619265b8719dcff47bd9326256ea24293bcf24e9aede09a242f9c68177612a2. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:31:10Z), 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/ITP541400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77af5d92341de094787fe07245950b3591a10ca58afa51db664d68565d4b19df. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITP541400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65686a82a4cbe49293eb9790bfb487b18209a70f3c05306bc4e16fa3ea61a32c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:43Z), 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/ITP541400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d572e94bc934c0204f1ff2195de7d73a62d25d0693140e9586cc9927a9a8ac9. 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/ITP541400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31f69786801ad2a6b5f0f68cdab160244e8e31068b6b6824195ada9b3b5e371. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:05:51Z), 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/ITP541500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31f69786801ad2a6b5f0f68cdab160244e8e31068b6b6824195ada9b3b5e371. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITP541500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec41a1adbff4818c26766dfeb7789491058c2ae62ba532f9736d505ef4cf285b. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ITP541600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c71c19165c6174bd94b579cae7887c41fefc3cb841abef3e43e0bc429d74cc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITP541600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9ce74a055c5e24e33f82644f842fbd6602d1aa8de90a9ed9ed171fd2d8af0d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:37Z), 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/ITP541600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7369bea2dc26be43e255a83082c4e6f17ba554d100754611e2f3e1054564e30. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITP541600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a46941dd16c0781524b83dbfc5f016e636fdaa242a6d40e034dda86b3f6f60b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITP541600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f47d00c8832eb5b4ca095b53647bbcfc4752aba17d50420eb5d6b533c0255d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T11:26:21Z), 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/ITP541600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc4ca569b297c7c78988779568310ad41f4f92ea969c5a4ebebc7297ca41d4f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:51Z), 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/ITP541801071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1815bdb185690487545c53aee75f37bb9694fe89af85e7bcff0227fb6fae5f99. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITP541801081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc4ca569b297c7c78988779568310ad41f4f92ea969c5a4ebebc7297ca41d4f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:40Z), 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/ITP541801071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee50920c90643ddb4d5e195d43166afc257748906bbfbc6f98d7b8c01ce4fa93. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ITP541801077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbfca9979eb3b5f2e4552636b620ce71fcd62f5ac27471bcfbe69c15e929bda. 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/ITP542100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c19d4f72f43c8e559d2bfb3a18ed8cda63e22b45aba45970a2517c2cfc79d1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ITP542100010.