thumb|Basic steel safe with an electronic lock. A safe (also called a strongbox or coffer) is a secure lockable enclosure used for securing valuable objects against theft or fire. A safe is usually a
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 0xc11dc0cd38835a80a4de511e6409b8201a6f9ec1d1ec1d025b937839d0ee3aea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fd60e46-e965-4f7c-9bc7-e2a446d93aaa.json and https://artists.proofprofile.net/proofs/artist/7fd60e46-e965-4f7c-9bc7-e2a446d93aaa.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 0xc5a0b71530052cb20e83922b932eb84d677bfc6b3210c32c1be459b46ac3cef8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165ffe3cf315f573c22e5a57ee4365b2b9fe49577a847b7f074a95842e773298. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11902121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad383a5b82990c684b87a2d41928c9e9b0246e62a83b36fb7d75a824fa161fae. 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/USLD91758314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2076fa5f3e9003198efd615ebaa476554b1d0fd6c0cd5c02e32e4dcd07f2e016. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLD91753792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa45f3bc10854b5a2132305347b768f014e163ec7735ca943fad2d92554c79f. 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/USLD91758316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c7bb99927ebf1c51978ea0db92c044247a7c9f357036339e8259b193022255. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLD91758317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bf1c46e10a408a5fbf1a2d077d637bacb20e11d5217211292e725f23c65de0. 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/USLD91758318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4f182e05e4758a06c836a5faf282df83a25b95c1129c13788e346cee1ff8d4. 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/USLD91754794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47adcd2e7d1fc2ddb31f277120bc36b8743f9dd687ec82a59c29f5d7dc1f57c. 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/TCADP1861174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcb64d8a55e460634ded6f024cf1864756664ca8a606a27b1ecb2a360b67b9b. 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/USRC11900974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0b71530052cb20e83922b932eb84d677bfc6b3210c32c1be459b46ac3cef8. 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/USRC11900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900cfac0ba231e68c04b437feca58aa514254e168a7d0657bc53c317a684d2a6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR1922452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4f182e05e4758a06c836a5faf282df83a25b95c1129c13788e346cee1ff8d4. 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/USLD91754794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2076fa5f3e9003198efd615ebaa476554b1d0fd6c0cd5c02e32e4dcd07f2e016. 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/USLD91753792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90459d98c5714e9e75fe2b78f2f78d6e84cc201cb0e68eef909d3667e39a4b4. 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/USYBL2300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978355b26c20a56dc58f626c1597838e7cdf753dc00792d77a57f18f972a1aaf. 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/USRC11900436.