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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cf7971fe8c2e419d0d49f8294f394237f61608db8efe825be889785c858f08. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/862c604c-5cc1-4404-83b9-84000ebd49ff.json and https://artists.proofprofile.net/proofs/artist/862c604c-5cc1-4404-83b9-84000ebd49ff.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635758b3fb36f7290302f087cd811376bf52842c054c06c14a0996d87e027d3b. 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/US7850610293.
Diary Of A Wimpy Kid: The Musical (Studio Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9480d783997540dd0a2a125abb4a56179550acad7e3e04f8938f5e58756d4f. 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/USSK32343283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf795294fd56b71fddba6336f6737498951e3d0902221662cd9ddeba56fb2ae82. 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/USSK32343284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6baba169f138869723abd02d788c41e1e3824bbf5383c5fc37e86cf6ab048d. 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/USSK32343285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3639c34865dce91d1ce6ee0e1e0a2994e904d6f306109fc75d3ca05c39b0a0. 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/USSK32343286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fc9dd884d15dc1f6dd58e3d202ada1213efe19e6adbd02efb04fe7af6ea20c. 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/USSK32343288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a2235e2da3509430eccde304cd19455ee53ce34d50d5369fbc8eababe58ae1. 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/USSK32343289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8458f74b1e193fe3cc1fad2857d2d1d00a3f0ffd8eb5bb45e577b65eb78683d0. 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/USSK32343290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa8fd6832175cc16be801cb682946f282fa4e3e35f910e4f0759a43ed7958bd. 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/USSK32343291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966d3fd5aadb650ee3e4b60681f831c6fd170c95e616871c225af59e3e5b31bd. 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/USSK32343292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef366ab6c604fe2cdb8942e8647af463cb196c6bdb1287f54e627316b1c2f755. 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/USSK32343293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdc6ab6aea9c7b22980560b27209077f024756e3ad447b072713e29a558437e. 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/USSK32343294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fa9e469e264baf495d131c391477cde7f4d88f8a16aa1811b8cc50f28f9aa8. 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/USSK32343295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7921071282a9713e976ded836e3005a9c1f81bccadf465e11bc80d26e5a5013c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USSK32343296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aadcf5f6670ebf93e460e155e20f5f2417bc9b20790c45fad0bc2187cd99110. 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/USSK32343297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c32667c5b1d8f2dc76457ae1fdfbbfb8b428b1d51027e9af3e5f19ed3d50287. 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/USSK32343298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b586e828b444d530591261fedf9c3fbdff9da5a83412b295838522ff6b552e. 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/USSK32343299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce63f55436da60484c5c3fa5f09e0291801b67c65cf4e81a034c2c3b3bb53871. 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/USSK32343300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf91f03956e94d947c04cc4efab68542189f38ce1bc1fc2186411b3d2f9ee8e. 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/USSK32343301.