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 0x889262af9bf5a986f8198facb3e38fba4590813ca511902bc6f6ddd4cab36e62. 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/ee224c13-1ec8-4d12-bdf3-952b6259053b.json and https://artists.proofprofile.net/proofs/artist/ee224c13-1ec8-4d12-bdf3-952b6259053b.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 0xb65a9d324bee6067116fbb353661ac1824e593751164bbb2b5e1833f2604679c. 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/FR9W12313353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9e138c105c8b5d047597cef3aa4b416d70b83c7c82be0a3faef8be15ab4775. 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/FR9W12366992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91e3aeca84f94384dd0a706ca4b9ceb330acc33dd4b4c53b66872f0ed829774. 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/FR9W12366989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5846ca9b821ab70e890c8f80b6acec55a08102c0ee1b3af19de916eb068e0c16. 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/FR9W12208701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5bd7fbb2a453d1bb37fbf821c5b516152a48745c49893a310127c86378ec97. 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/GB2DY2200675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5bd7fbb2a453d1bb37fbf821c5b516152a48745c49893a310127c86378ec97. 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/GB2DY2200675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964d2c34cb3be926bb580962749cf5918131764e35a571f80fa967a645db88ad. 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/FRZ052100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad5703777a90d600ac00f365297ba0953a21398f483cd30d54666eee93bf513. 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/FR9W12247198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65a9d324bee6067116fbb353661ac1824e593751164bbb2b5e1833f2604679c. 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/FR9W12313353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d2f72a18459b5f53a11c622d48d7cce72353439b6c140c5265b2a3f61cc9f6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDW2401382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ce0112f0de05923e7218490f39d638736dc95decb1054013a4f1fc72b41bd0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12310688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0ed1607f2f5a5e21b58e1fc53c3c1d6d8376293dde01d0aafffb02ae419329. 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/FR9W12219128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dff8316d79fb77a4d2ff062b7d6e06fe4c3323942abf429d12c4b673d79257. 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/FRZ052300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dff8316d79fb77a4d2ff062b7d6e06fe4c3323942abf429d12c4b673d79257. 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/FRZ052300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e740f023d8609971ff28f4bc1a64faf0c7964b80d97341184613a358e0d5b7b. 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/FR9W12467453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fad4598118487fdefc36857a843d3e32bfa194a284b80e99f9ca8c259278486. 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/FR9W12467941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12095d6726d95277ce667fbbd92dd3523a26b6d3d5d3d333722b7cd5537f90fc. 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/FR9W12467339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb38c99b763db34234f8719ad468466cc507973cd9a86b29e4e41c1de9fd4a6. 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/FR9W12467452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187d484632e1dc2dbd87cee7fab08c5bbb336bfc407721be632752c95ff8a07e. 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/FR9W12467942.