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 0x8fe13c908a07f234ab2eec4d994b9a1c44d9152eff24da1fe8e9fa7a2099ffec. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1d71548-4aec-46fb-8b72-bdab4ef9c6d0.json and https://artists.proofprofile.net/proofs/artist/a1d71548-4aec-46fb-8b72-bdab4ef9c6d0.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 0xf176023ef4aeba130da8c3d6da1b6b0f418ca5588eee310243ca5d996862d89b. 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/GBMA22406810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfa132510635cf60f9a4def49e858db79101d3827933846013ae39edb706ec. 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/GBMA22406802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f98a9c1c65e5acbb5df53932deb79d17ecedae12ef25e440f9cc73a6f3d6ce. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:50:35Z), 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/GBMA22406790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3b1bd0d3745ace0068eb8f744ccd2a3516c6313e976deceac357f000cfa347. 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/UKXN22466817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf07ae7610bc843d85130d842d47b85e847185585fa0320cabcb230ab1c211ac. 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/UKXN22470891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75439169f5ce9405e589aa7c6b12128a2023be71d81cf659e56407f2c8a763c2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKXN22464332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11e60e301bbba14bf48ec62e5926562d6d9a49637a18a8232b705f09177a118. 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/UKXN22419460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c9dae05eb51e5241a14713ce966a724a9344b529d331baa4a1b0670dd7a0c5. 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/GX3Q92497719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb501201c508383d8a02d971bdaae719bf76020a2d6f1f76687e8222504544. 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/GX3Q92459082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb501201c508383d8a02d971bdaae719bf76020a2d6f1f76687e8222504544. 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/GX3Q92459082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c9dae05eb51e5241a14713ce966a724a9344b529d331baa4a1b0670dd7a0c5. 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/GX3Q92497719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11e60e301bbba14bf48ec62e5926562d6d9a49637a18a8232b705f09177a118. 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/UKXN22419460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75439169f5ce9405e589aa7c6b12128a2023be71d81cf659e56407f2c8a763c2. 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/UKXN22464332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf07ae7610bc843d85130d842d47b85e847185585fa0320cabcb230ab1c211ac. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/UKXN22470891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3b1bd0d3745ace0068eb8f744ccd2a3516c6313e976deceac357f000cfa347. 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/UKXN22466817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfa132510635cf60f9a4def49e858db79101d3827933846013ae39edb706ec. 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/GBMA22406802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf176023ef4aeba130da8c3d6da1b6b0f418ca5588eee310243ca5d996862d89b. 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/GBMA22406810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b316fe3530b8795c1a85f64d4d5a6a4985e4cb947a8649d625e925f5887e20. 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/QZZ782506625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd365cf4fe83b779679058a465d60f59194d9e5c39b9f290da67573cacfed7344. 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/QZTAY2586345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd8313f5bc180ad0d6b02b446bf6d006c22c97d3f8d78ed07eea0e49ec7d452. 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/QZNWY2513481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb424d90beebc7f1e93a5aa3f8b40a464b556b598b360235134028a9060498456. 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/GX3Q92576907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09acd6da4996dd0306498ae5d9644443f87f11a1f809ca693fc14f85765dbbbe. 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/GX3Q92530906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e5d3e52f1e5f66c130871d856784a4971e11f27f3c0551a8537017c47dab38. 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/UKXN22514412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a0157f422ca6367a3666386b57602d53ce37922a27b4f1bf54fe1811d6fccd. 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/QZZ7Q2490585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b31357fdb54d12c4067bad2c46df63cc242f9f4433eec5558849fc8908ed569. 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/GX53U2497732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf176023ef4aeba130da8c3d6da1b6b0f418ca5588eee310243ca5d996862d89b. 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/GBMA22406810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfa132510635cf60f9a4def49e858db79101d3827933846013ae39edb706ec. 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/GBMA22406802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f98a9c1c65e5acbb5df53932deb79d17ecedae12ef25e440f9cc73a6f3d6ce. 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/GBMA22406790.