The Shadow is a fictional character created by American magazine publishers Street & Smith and writer Walter B. Gibson. Originally created to be a mysterious radio-show narrator and developed into a d
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 0xfbe978d01800a5516b118f6efb1c3a26eb76357725dcbade354ba3b47310a968. 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/c78e1a77-d822-4527-ac64-1c412acec098.json and https://artists.proofprofile.net/proofs/artist/c78e1a77-d822-4527-ac64-1c412acec098.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 0xda909f4a80665ffa6585ff2c9d0e5b5e391dffa91248dd346fcc77eab9df4021. 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/IL1470800399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6563dee548e7a66571941302629bd1037c26b673410420713067591cc129f2. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:49:51Z), 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/IL1470800407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f32b862c14f89343c982adaee38d21d7f5444268c4190b0eba5ea28ff6e9dc7. 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/IL1012200609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1686cd0bb9142c579769b788ba20017b8a912f7e0ff8f79ad6b3cfd9fcd22e27. 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/IL1470500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1686cd0bb9142c579769b788ba20017b8a912f7e0ff8f79ad6b3cfd9fcd22e27. 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/IL1470500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe783441141dc8e7b6ca83206a70c4f23f3608336b486ac90d742aa02fa56e7b6. 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/IL1471902464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180e843998f6e78bf71d0ce1e38d8ce017cd5522d55207010a91e4f93c6c5c28. 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/IL1471902468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc981448639cb0fbd69d8c54f3f6d6602323f4cb33a785df2f2a3d9858083c9d. 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/IL1471902469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa2768acdb808229588344dc87028ca77df4a5375c2308440f9a1493bd3cc6f. 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/IL1471902472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faccf0b988a9d2e3ca6525d3a7d45b8a1737f8fe7d1c33b89622d82e4442ff8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/IL1471902478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fae58e502de2ab3e762366b3c31e2a4b4de8ae714c7459d3bca5f7e21f61934. 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/IL1471902485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf01eb030fe65266d95d12e329c5f9d9cc53b78edd5cc6358f4760313bc25c2. 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/IL1471902495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d873c52733b476f981117888f7d514f015772c9e0b5638540896b0954c89c9e. 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/IL1471902497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b15e020f7ce10823430510f9387c16b610deae147dc7746dabc28cb7d8fc9b4. 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/IL1471902499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f12c12fdbf9133268337086896177119f685aaebd477ca5704d6bc8d866e2f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/IL1471902475.
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 0x411a91f58a9ceb32f82cee4ce7de4a97d6aecadbc643a122a0b074dbd61d0196. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/IL1471902488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e05ae6594ec68cbb8bcf8278a78d1c31bce3b5e02641991c00a035c499301d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/IL1471902482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37ee7f9e71852bf89d372a5421fee688bed385925216775833b03da7a1baecf. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/IL1471902483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86fec0cf8bea1fded6e76922169c00e3c0199c92fd83b57ad436e74ce6647aa. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/IL1471902486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be36ae72f6726622bba43bca83a2dee1fb42642f81bed6fac8c6d873520b170. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/IL1471902799.