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 0x175066fe12c5e4af5742010944b4633f066b90337175b12029aab61149809eb3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0e5efc4-0542-43c1-81cc-7aed7d46ca51.json and https://artists.proofprofile.net/proofs/artist/f0e5efc4-0542-43c1-81cc-7aed7d46ca51.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 0xbde51693f89b5aacf8c17b005cf59a8ffcb90fa69692752892cf6cd792ec34da. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:51Z), 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/SE6TI2356717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29df178bd2635a9ad807a3c1c0b849de98975f80cfc75449e43e087d1324e6cc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE6SA2359741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ab7288795817141f974082bf2f88fafbac98af88e3e68f614a013a7ecdc33d. 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/SE5752448691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a48831688690b96e3f57312defe6f6ca0e7aa63c4d591ec06438aeb0308d8e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE6SA2475844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d0a4c75002bd7444b7185d4cba298a0dfa206cb4a2328c8746355918ac7efd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6SA2475846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6697a638c0032fa20eed39312b1d381aa7d592a85eb847dde5932ad3897b351a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6SA2475847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb003571666f48b072db5725a650e0f4ddabe1f0f2f3b2386f273c074d95557b6. Chain 2 (Bitcoin): anchored in block 957566 (2026-07-11T12:26:02Z), 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/SE6SA2475848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eef0206e118bdf0c05c1335e668f2179f99f56faecb13f345a85a69016d42b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:16Z), 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/SE6SA2475849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a642d5f13138fb169a1de16acb16d6f66672eb7a5b6f56b2c79217dd05fa384. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/SE6SA2475851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ac46d43961863ae6ba59ae2cba57a3439589bae35998f5eef5add89022be9. 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/SE6SA2475852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e599f2317fab92172cdbf2e93a70dc8d80796a32f5f0a8e8e3a02a7e90500b. 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/SE6SA2475853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aed9965b389d52abcc7183312ac40feb078863bbf58f7ccd6a7f13efa5bf18. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:32:03Z), 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/SE6XY2529095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f92eeb41e5b877210e7cf5b7f00abba4c16e7fd1e92f6633e641607d8d4f96a. 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/SE6XW2581421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2955ea299db43e4180e2cd12b6c8f0e9b25f926351fc33df1fdc09edcccabec. 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/SE6XW2581422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80940fc4baad5ad3c01af39ecac7efa83d9be7402aa195f104e4fa03ae6b7260. 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/SE6XW2581423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55244a08c04c16605508eea6b60bdbf6ffb80db417c06d15a4876dfccd5e48b7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SE6XW2581424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28e1d3d7389e23f681e37b59c12866d6ccccb81e1425c72488ac1cbc4e4d0a5. 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/SE6XW2581425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8d578680f68d17b3b14a78206b5cc40808e2ec5b5263c78e22ed7c03a6dafd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE6XW2581426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8358da92590c5b3bc8e1dbda8aee5ac5e66292e78bbc752691e53982033cca7f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:01Z), 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/SE6XW2581427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08b92b676089cb395e294606614459a3e610f24658af62b3e8004f62296acf6. 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/SE6XW2581428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff58635c2d888006f3bf72b7b6ace759efaea967639681dc61d26a3b9571eee. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:55Z), 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/SE6XW2581429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6b59b9f3cc5d54eaafb0faf482068d54eb9c4f229d1aae4bc82f489ed5bf2a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:15:39Z), 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/SE6XW2581430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd97f52741e73416be8c12ddffd3eab5d739046e857590bb3e59131db999a1. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:23:13Z), 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/SE6I32562936.