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 0x0b45772f526b2061e90e394e96ee01fbdb5458ce5a7bc343ee36b0aff94a6b11. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/199c08b5-92da-405e-9b22-af6b655ce4e7.json and https://artists.proofprofile.net/proofs/artist/199c08b5-92da-405e-9b22-af6b655ce4e7.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 0xc0be95f09936076d42a2c19898363ecc83e4558cb03313b852c0647b5f35fb64. 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/CAE562017302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248e1a351103fbc23ac3103bcdaabcdaf05345befe7e2a02721b7939fbd0423d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/CAE562017301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c440fb51cc0faf6c5d14c99c39566cc6e4b4b13e8a0ccf48d05082b7f636ea. 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/USCGH1753267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fd1c515a45842de444a6d911a590c55241499a0551857c349851b45cc6641e. 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/USCGH1753269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2016d39e05e18d49c86e55aedc58ae72cc3079db4a1fb36ef68970784836cb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGH1753266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8b9281a1cad688fd5d363d495d1cab7642b5e778d8f64706a356f08f092806. 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/CAE562125701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c42e01fbddc9f246455eca749bdf99071179596fe06d1b8b0e268cae2e57e79. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAE562125703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc55788ed6a590b64818e0946cd3d45accc6c3b1405dd7d20bd3ad4e6c4659ca. 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/CAE562125707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb07581eb7a8f6717e85c5b37e4282e53ebea92dc3309d4cd12c63e5a8b39ad. 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/CAE562125708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf1b79cd4b74c34736560f141b1a4a37530321ebc95913b226c9db36c92c126. 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/CAE562125714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6492369f0b149b5e5a5cdd792d880619ef411f3cefa8c66405ede4c1813ff7d7. 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/CAE562125715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fa9950000825d8d071c1463b20781b84d9482cbac23f31b20b687689217f25. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CAE562331002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6a69112e92e0d60d9bf3232fe72eb74ee3e7c96b9dd7fbee819031f944ec2a. 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/CAE562331006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd0dadefb167686c8d23185ed2cd359fb48e9e44e104ac49ab41f4e53477605. 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/CAE562331007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bd6d3c6e204c96dc69fa4bfad788e3f67d23b01f6fa665fba0b85e66777d2e. 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/CAE562331008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6abc3cba5d692bdea9657f959d9e00617f7dd5367e4f42226d27071aae38142. 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/CAE562331011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd857c21e5fe38a344afffe53ebeaa2ed8c68782e9f7f5eb652c4e6d4af1229. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/CAE562331012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe940a017c48a78e35c29f19aff8d287c63cbb1d1797d577c5940585ea3d022b6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CAE562331001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5824007f360b100b26a3b8569e2e377cca7e0d2f97f441e29439822ba78be6f. 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/CAE562228701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3dda16492c9c7b2d20825257b43fe5d41ad006b5d80a1a73af5d176c4b8514. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAE562228702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f562c8c586192e6c532a5f30623376bcdf59004ca1511e25c0394bbead1afa. 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/CAE562228703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf009ba7999ba18b1cf225fba8b44e1daa924146e200aaf37df56a6464202055e. 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/CAE562228704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d846f62adba45f33cd2661976d0a35bb16a2e5aceb1b62d046aaf46c3fc9ed8. 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/CAE562228705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf22059113866b0781bcbdc7c4b5fcebec3d22f859388ee8ec0e71bcadc50ff. 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/CAE562228706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846491dbc3027520262fbd14d94c127fc87df927759bb891f7775a3653c2ad9d. 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/CAE562228707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ce2d717bbb610b2e6d3a4048baff75fd6f6024d0224a1225b1cea5747aa577. 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/CAE562228709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfa5a89742a8b9851afaef47bcc3f120af894386d3d98ed1a1e18c4ce5b1391. 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/CAE562228710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68704af25a33b68050d908474cc03e1dad1477a0d3f49e148ecf990a1005c852. 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/CAE562228714.