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 0x86134d0e3723e6e08e60e7a79f3a9fd0b2a4c6ce32310c48f1b7d18dedf0906d. 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/df52b500-1c86-4705-b92d-012445805e6e.json and https://artists.proofprofile.net/proofs/artist/df52b500-1c86-4705-b92d-012445805e6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sheriff Callie's Wild West (Music from the TV Series)
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 0x5f18362ec7dca7388eb3dcee87dfa6a44fff244dd87e0aa21b368a6b6c5cac7a. 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/USWD11467159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0714898b60ec8a6a59fd5e79fe77fb47e6ffa502b530b29624569bb4d088888f. 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/USWD11469239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa170c3a5ea7603f2e9d5cc04fc939522d0514feadbe439ee631bcccac4ca11c8. 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/USWD11469227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afb9e927cb06d33d357948188bf173a11b7610172c5df11e7f3d1f4db37f940. 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/USWD11467160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6b226bec4d63e7bdba57aa0bb00c683e107b7fa4a0a7e93a9ac09ace5b8f1e. 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/USWD11467161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea428eba58d245dae944ab301bd1ff08313da7e1cf76426fbce0d74b2ae6314. 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/USWD11469219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8754f5a1ead5afce8397ac94111d47ccb4e221589496105abfabd908b1979021. 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/USWD11469226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62655c864e35b2f217aa04e97074e384bfbef261c5da49a508a95df998a5d19. 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/USWD11469225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151a5f08d048035a1022bc72db638afb1b3ff0fe4680516cfc3bd7f71a847393. 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/USWD11469229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f18362ec7dca7388eb3dcee87dfa6a44fff244dd87e0aa21b368a6b6c5cac7a. 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/USWD11467159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45d1c3dab9287a6b330747c842d6ebbc91e35ecd09dcb812da4b639a917d4ef. 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/USWD11468968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220492beb888b21bd1b57084ea6bd84739322c39c2a1f92b2ec872373dea861c. 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/USWD11469230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d09b4a55d966b2b6900aa0a4aa94fa3266b57569d6bc0e8521586c16d9d5501. 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/USWD11469237.
Das ist Sheriff Callie's Wilder Westen - Titellied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7842b495ca6ddcf59d89ce7806edbde1c1291b964c13b74cfb9475225d5dbaa1. 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/USWD11468967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc47a509922cb1a33d0a75565f7b11ce04d9b5ee4c3d15873248f2a948f402be. 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/USWD11467162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fee90d87fb19939b19ee161fda98679902f6282ff0ae69ed42f967ad74529b. 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/USWD11468969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f18362ec7dca7388eb3dcee87dfa6a44fff244dd87e0aa21b368a6b6c5cac7a. 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/USWD11467159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afb9e927cb06d33d357948188bf173a11b7610172c5df11e7f3d1f4db37f940. 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/USWD11467160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6b226bec4d63e7bdba57aa0bb00c683e107b7fa4a0a7e93a9ac09ace5b8f1e. 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/USWD11467161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc47a509922cb1a33d0a75565f7b11ce04d9b5ee4c3d15873248f2a948f402be. 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/USWD11467162.