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 0xb157098bba3c904279c985b9c2e2e79df5dcc4771563976b62ca25aa280eaf2d. 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/48381bb8-16d5-47c4-8e74-02c9c7b4c46a.json and https://artists.proofprofile.net/proofs/artist/48381bb8-16d5-47c4-8e74-02c9c7b4c46a.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 0x56645e93842ef767606b246bfc1ad7dbf1d08cad71ea994e7f8daf5859444137. 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/DELJ81619069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830d254777df81217756e17ab2147bf170f67b7baeb93f2fecb8f9785a3fc8e3. 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/DELJ81619070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d4b162462d2763cca0610ede1c5262cd38ad5c392d5f213661b84871062b2. 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/DELJ81619071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1414a723a0d8961b507d6d94ae1ee786c2c20f8058cb9d755c55b45856048bb5. 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/DELJ81619072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2544d0ba62d075cc86644cd72f1493864782e17d8f60f5cc2e82e4a94a6701. 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/DELJ81619077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee76caa656dddce056b04a9b895a88d927140d098ce7b66465134774b7ace19. 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/DEKV21612718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcd6b878f906148fd96d85d1a4f7cdd6c13f1857acd46ef23949f10dd48ba92. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEKV21612715.
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 0xd5be32b1dd733b4619c2c99306611aada6fb71aba53e983a4ec42c1d9eac1aed. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEKV21612716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b0a82e2befe57512178efb8130bc8c50dda18ab7d9a961844333b4a0478e3f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEKV21612717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1fadd25060609f2c9e013a676a95d56d2ec7784eb62cc8e53cf7ad16c1f970. 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/DEKV21800420.
Parallel Worlds - Solitary Experiments Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f8313d34b52109c147d941e2ca64ed9a725e3e121741e6f2b2568fd5b1a0e2. 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/DEKV21800437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3274a65a273d776bed7cf8ba2638fa1b680d14d1bb8fd78123d7a95aef8c8c66. 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/DEKV21800436.
Parallel Worlds - Shortcut Remix by Christoph Schauer - Cyto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13517aa005fd425ca8e7e1ab4d60ee52113518d7754d72ba87cd57b015e50aa. 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/DEKV21800438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce4ac20bd6d819c7088b98108e0fa6130245e03ce2652fe46407f0a0e0524e9. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:40:30Z), 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/DEKV21800425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2b149d37522a408bd8a7940f22a441b3ca1a61259d636a2cb5cfcb9ff0dae1. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:12:20Z), 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/DEKV21800429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e29971bbe494dd56176fe0ffc17e42b3c846fa1b791c3b39afe40fd95fe8c53. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEKV21800430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3d81bace280711f886f669db64759afcca568451b4d05283e349828037bb0c. 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/DEKV21800544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bf2ffcdc84348079b7547b751140e849f2f8d24c9c2ed90c50a35cefbf6545. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH5711400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b4851da07a8eef4a0dd39f4e1dca836aebfa4903116baece95650a314b0e85. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:01Z), 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/DEL212205381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf10e0affecc9a51cc96938df2ccc36d98f863fe4ff159903726872e6f59cc8c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:51:57Z), 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/DEL212205384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4294d515c3affcfdec2c28e49fc5548ec411c8fb2e0de208b1c7d1108072f6c. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:36:50Z), 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/DEL212205393.