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 0x7ba74b01f8b05db5125917ca656055aa764ad7809db4e333b484954eddbeb10f. 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/a31da64d-9a89-4a3f-b0da-38803509e900.json and https://artists.proofprofile.net/proofs/artist/a31da64d-9a89-4a3f-b0da-38803509e900.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 0xe54a5fefaaada487410c4dff451ac2d39d38f5bf86470aefff058702cb7b4d8c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPZ922013971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7c949ce84bd05fc4cbc04845e805be37802959c0f9db553478a930db4256b2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPZ922013970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54a5fefaaada487410c4dff451ac2d39d38f5bf86470aefff058702cb7b4d8c. 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/JPZ922013971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b6c3142f29c268c813778c999154434c198b695d3393fd5d4db3e55137a79d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPZ922013975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d950aaab5933005fd070204b6559f6b1c0c19f83682f4385f0070773b91fd2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPZ922105813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d77ece77d159e650bed9e219ff23e5a16cc5b95b5ea414627b1003fc779c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ922109229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae52370e3dde49fc9905672e15bc3ce1f6b417b65722b3e6d1cae9797c2b0f. 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/JPZ922111393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61c819fdf44cdb529ef6bb4b8152f11879a89b5b8cf7a23dca84ba9200243e8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPZ922112946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11fdf35b8cd9b8cf35c9773221b5a1aca841ffe4db9162c01b74250d9127779. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/JPZ922112947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae52370e3dde49fc9905672e15bc3ce1f6b417b65722b3e6d1cae9797c2b0f. 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/JPZ922111393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe174af05a4c8125b282ae0b743d7dae03f8390ad6e26abddefd3cd14191fdd0. 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/JPZ922112948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc5c25d4a5d1553ade348ff16e4685c9affcbece84f3c71a80f3fc6e9e9ec26. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPZ922108055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f6af664aabdaaf4279b93a572e9e640178ef42158b155641ab36941c700008. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ922112949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d950aaab5933005fd070204b6559f6b1c0c19f83682f4385f0070773b91fd2. 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/JPZ922105813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d77ece77d159e650bed9e219ff23e5a16cc5b95b5ea414627b1003fc779c1. 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/JPZ922109229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0bddf67330bec41a98a599b534c3e93d5b78046adbba7abf5ee75293742609. 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/JPZ922112950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d32ad43a81f2045588ddeee413f2e33ba8e6c46969c3ad682bf9da20b4a16f. 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/JPZ922112951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b53275cc831fafdf19fcb74d6004c7cd0c2aac49d76f53b0629f5489cbd4db. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPZ922206940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e0d945ff99bbd6a4cc4f635ee710e4ca490c4a24b62830ea8531a73497bda3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPZ922206939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354175cb27d08a21a8efa86a45c8b91b5885c66a41b36d720ed3b9044c52d932. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:05:50Z), 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/JPZ922310183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e0d945ff99bbd6a4cc4f635ee710e4ca490c4a24b62830ea8531a73497bda3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ922206939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1102261c32940ae91fc77c3a09b3f4ffa4e6c131eeeb554ab6a4381def0aa9. 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/JPZ922310185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf418b80705acab8dc226388c34fa7d0f26ab0de42d0cc902407706a6b2f9e4af. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPZ922310186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8798780910fc6270878360a424ef87b49957cecc3d2ca9b59133b65ddaed54. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:05Z), 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/JPPC02312670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9ecce385babee7d12065a9c56371a6eea621f944c6693f70fba734916682d0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:01Z), 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/JPZ922409843.