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 0xcf2ee104ad00b1d0b334f708213b0202e5971ea81a120f74b04760ac0bea8183. 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/61a2aa18-726e-4434-b4ef-5ecdc94995f8.json and https://artists.proofprofile.net/proofs/artist/61a2aa18-726e-4434-b4ef-5ecdc94995f8.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 0x9320273fe7c159b39f70ebac18e842635acf7e103a398a9361141d637a17df72. 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/USA2P1939998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69413d6db193f47a34f1207cd76af28847ecc34bf001ebc4c645ad905f4f90d. 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/USA2P1939997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0050956eef3b024914252f96ebd4393b7a58dde3f98fddbbb3288408eeab62. 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/USA2P1939996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd430371c64335cd3ad4116f224acc6c5a7d990a0f7564752f800253046565a. 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/USA2P1939995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb862016d107c3bba2b1a63c82f9ee8b3deef9eb10d2a9da8eea9817455c512d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:55:39Z), 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/USA2P1939994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c93eb88d469784983b5ef7d3d78b30e3ff5c2b231d05bdbaf9ec502fe8984e. 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/USA2P1939992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3c477db33ad14fcada682c42bcdb610d00d5412747ecb953c5c990c31dd9b8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA2P1939991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68baf2265d50ea151bbf86b1b4c61ddc052a52fa250d70c182f59a60333a70ec. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USA2P1939990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7eea0bab0e72233dad968b59c33ed53c7b8d298f5c74dfc61738c9252e4f19. 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/FR96X2422237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb021bd1b503e2e612aec3bc495727c58fdb52286ba318a5c7f4c32b2171caf7. 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/FRX872366263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb021bd1b503e2e612aec3bc495727c58fdb52286ba318a5c7f4c32b2171caf7. 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/FRX872366263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6089fab63a90ec90faf0b048d3fed47e5447948e3ed036684560a9dcde371a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA072282811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5861ddc0f26e91bf91016ca92104fc257c25143e88ac9d88fcdc0cc0da1b2a. 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/DGA072273464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a08536c0289229b753bd1b9de355b623337f19de85df244219506865f5292a7. 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/DGA072273466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68112a1664ded10a158c1de61e30f1770adbee95daaab46a71992c837e35467. 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/FRX452238659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9100b95c74705464df3890477c36b5f9b9b9ecc4b29d0eaa880954be1fe4d0. 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/FRX452238661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1319e6be7da7e90553f9b6f3a84f0ebdca967fb29a3f407477fa06ad59e7bf3a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452238662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325d728fa9b530f313c538d6f2626a24fa142f97575add35ea8d9d6da449ad65. 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/FRX282250328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4391df9863cdc3b5f21bc95f34afedcdad51bcf1d89911dfc582022b202ebe77. 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/FRX452238663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325d728fa9b530f313c538d6f2626a24fa142f97575add35ea8d9d6da449ad65. 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/FRX282250328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c93eb88d469784983b5ef7d3d78b30e3ff5c2b231d05bdbaf9ec502fe8984e. 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/USA2P1939992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab95329613903fed237e0f0c313d39679c5f305793717e5d240880e302c4723d. 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/USA2P1934302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b437c8c6add52a3e95b0cc5d99003db15dcfd0ddd9dc85740e942ffcdc0bac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:58:42Z), 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/QZ4JJ1825890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b39277e0830090ada9ce02c8c6413b71d642b3288a7b13395d44e1695289c5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZCE61806846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2313db0fcf1ecad46fa53764042e5080c93e18ef37fbd61205f4b159d71f8ceb. 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/UST8K1774017.