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 0x2751eade1c052c834a0166ac86613ba4525068e13e2dfd86b5e2e38ed0cba416. 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/d784f00c-33b3-4ee9-abb9-2a35aabda546.json and https://artists.proofprofile.net/proofs/artist/d784f00c-33b3-4ee9-abb9-2a35aabda546.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 0xee27c33579d4d7910a3da09875e261afde80e65922e6307c09c58b6121f220ee. 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/GBRKQ2416699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaecfd362dca6cc7967a8625b128f41987e42d574504bbae06e1fa934a4929c6. 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/USLZJ2440852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61ea838ed20bcb871f58e42f5cba14e31e07791c05612f0c14f86db41078941. 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/QZ5FN2438863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2195863da23f4f41a601c81c309a1fbdc083e576f52aed1d835a1749ad7f301e. 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/QZZ8A2399168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74afd1782ae27439aee25b5f25d941c4d751986114484956756a37168e29eb9. 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/QZ5FN2361735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ca2f67858b94982262c30447c73bbc29b3de3e3d7fc3388eb16426e3a43b74. 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/QZWDD2249667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c4bd2c9c899514b08aa147b15cd5c99da8de340118c20a04805300f2faac80. 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/USUYG1428920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea195907e5269daa6238d3d5a6fce2b1f6f7fc33e695455d14a860340bc8b66. 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/USUYG1365343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca6a1de77bfb4b15d585723c502ff6daddf67eae08c7a1f850086caadc764b8. 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/QM4TX1973135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac972659902017cf957a84397f594837cf606e123d8c135b831fd817838abe85. 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/USQY51488601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8786ed0619251b01c04c04b8ccd460e18811ab59bd0ee86c36cac03993996831. 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/USUYG1294515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2678e42efa6abf34b29617e38c1ac24f1860ba3f724a32d5e6e5c1452b1f944c. 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/USUYG1294517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea195907e5269daa6238d3d5a6fce2b1f6f7fc33e695455d14a860340bc8b66. 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/USUYG1365343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102eebdcbbd1454f1868ac858adb89829b233f3f3e84335d4d6b7f5e457afe16. 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/USUYG1365340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe8302ac8ad535fbb6222190ae4975af6f2e32849fcea3c9fc1e475457cfdab. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:21:43Z), 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/USUYG1365333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd78c7414094440d841ed40d00398adba9b68529577339c6d4b7dd7896a3188. 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/USUYG1365342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a95d93238d3b11f002572791312faed056920852e3bc39b01dce76a1bf28db. 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/USUYG1365344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ef9833295e60020911ed63e21d2df2c185041600ddd5184d27b2bb39b10ffd. 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/USUYG1365345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e59ac536ef95adcec82f57471685944b1d8e18422348f004cc422d4796254a. 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/USUYG1290924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9310a6b76e3cc5f30b63a3dba5246815052301a72be1a232d80fc83e04b6ee. 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/USUYG1286587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb1ac7ae5f88a59c89617f6dd77ccf38a0344305a314a16fe7a8fdfc6938990. 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/QM6MZ2158246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527c5b87b3229b5c407d973c13d977c876edf39f46f6dbdd3c90a90974f3e03e. 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/QM6MZ2158258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61ea838ed20bcb871f58e42f5cba14e31e07791c05612f0c14f86db41078941. 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/QZ5FN2438863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d81b7e971e056a93d37abc5e04465207c9c487bf5ee41796974a020d96f3a0. 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/QMRTJ2200587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa644a48cd0eddf1f07d6a5d5178f99b6feb23b4e19939d29757be9e71db0c06. 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/QMRTJ2200588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95449d3e75a1807a24005ca3b5ef934700604b517b91b173bbd127dc257720aa. 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/QMRTJ2200591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a9887f926245b11ff636901972cc5f34fa65d4244f789e35fcc7aa6b7ab88e. 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/QMRTJ2200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b297903b152017169652ed7a49fdba57e28ac7c2eaff5d8a99a25e8bc79646f. 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/QM6P42075985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cae62ff8da24edb4f52703053388574edc19bacb6589efd1f8c1b2ee5adc57. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:40:01Z), 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/QM4TX2052047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c916335dc6f3511f62a38e9147cee4246f0b5d18ea155c8a120e1e88d80c7f. 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/QM4TX1831156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90f1b564820b6be0ce4fd50529675ad2ec3d4c6dec3c23476a56573037ea3f8. 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/QM6P41801397.