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 0x333d203f6292a337e380548a73d5fc0e4409413fb756a071b940d85cc652d752. 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/246726d1-4a15-4645-85bc-368727257af0.json and https://artists.proofprofile.net/proofs/artist/246726d1-4a15-4645-85bc-368727257af0.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 0xe1563b699b6315048c85a7a932be8430e47e94294682bdb09d3ae28215ba7b3e. 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/BEN582300940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b0e58259849ab542bd9d36811c81b44bfd60db4de6d6c469d5bba2cc702a2a. 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/BEN582300939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd10f9fa77eca1430be3194a34c294d1b8b3f15e1783ac2b2b4f54a4a4496e5. 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/BEN582300788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c66cc27d9a3aa8abf5b8bfc45f8378bd5fd000611b7df195d437b539e4e549e. 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/BEN582300942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b77a14f7d551a39e570464b6130c46d92717aa4ada8b01ebdfa4a16149b56a2. 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/BEN582300643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdadc474ce817bf0a390dcb63869c8532e59f50d255755a3b08722df4e83ca8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:29:31Z), 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/BEN582300946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7c6cff020bb9d45bbc914a3ef36cd6f701e74cc76f6707f0d7fcc9062fca98. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BEN582300944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059176ff0be098d5e940a34b3acc2c3d91dd65d452128cf37dc72301f47ffbec. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BEN582300945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1563b699b6315048c85a7a932be8430e47e94294682bdb09d3ae28215ba7b3e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BEN582300940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c66cc27d9a3aa8abf5b8bfc45f8378bd5fd000611b7df195d437b539e4e549e. 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/BEN582300942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd10f9fa77eca1430be3194a34c294d1b8b3f15e1783ac2b2b4f54a4a4496e5. 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/BEN582300788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b77a14f7d551a39e570464b6130c46d92717aa4ada8b01ebdfa4a16149b56a2. 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/BEN582300643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c66cc27d9a3aa8abf5b8bfc45f8378bd5fd000611b7df195d437b539e4e549e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BEN582300942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd10f9fa77eca1430be3194a34c294d1b8b3f15e1783ac2b2b4f54a4a4496e5. 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/BEN582300788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a2a36612683fd63aa5ff036c100d00d36a708fc9e63fa0a60afbd2ae393fb2. 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/BEN581900360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0a483181f1b8fb3ebb6db5c2d6f975ea97b10e8b577a3a816e02191319fe27. 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/BEN581800726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01e8c64b41734a9d2d729c56d170f5006a64d2d19b874f7613aabc521aa8dc1. 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/BEN581700831.