A cube is a three-dimensional solid object in geometry. A cube has eight vertices and twelve straight edges of the same length, so that these edges form six square faces of the same size. It is an exa
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 0x4756bf993784ae7a015331ae703801fd4d853423bb2bd03236956c144a410a0c. 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/cf648614-3361-43ab-adbf-07dae056f7e6.json and https://artists.proofprofile.net/proofs/artist/cf648614-3361-43ab-adbf-07dae056f7e6.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 0xf40a9a04e2f4635878161e544f70f663397142dbf8b267f960156b8c5f409a9c. 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/CAPSU2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b659f91c7b40b9ed4b31ad0f66fd4e3d259f6cc85077bfa88183619c8b02390. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T23:31:17Z), 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/CAPSU2300606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f425b7fe52ffa26cb10a4d37065a1ddb4beda878ee97733433bcb92a4583274. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/CAPSU2300811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f893b5e17f2a4f5de74d2dfdafe37059c3e9e6bc31046015df2969b9bed774. 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/CAPSU2300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf3f4eab2c749d0c657a1459a035b779e13ad35a717806fcbc89bab10072963. 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/CAPSU2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d084aafe86d4ca2ab7eb710df8bc711d64fb232bab0850031b3e97a5bc1b535. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAPSU2301201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d084aafe86d4ca2ab7eb710df8bc711d64fb232bab0850031b3e97a5bc1b535. 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/CAPSU2301201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f893b5e17f2a4f5de74d2dfdafe37059c3e9e6bc31046015df2969b9bed774. 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/CAPSU2300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f425b7fe52ffa26cb10a4d37065a1ddb4beda878ee97733433bcb92a4583274. 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/CAPSU2300811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b659f91c7b40b9ed4b31ad0f66fd4e3d259f6cc85077bfa88183619c8b02390. 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/CAPSU2300606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfa0f885af90142dc585aa58d449c4f07a52b9fb3c918d7172133f3281ef611. 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/CAPSU2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b54b183d6cc6e9abbfeff037634f9d181ee32906991b145c7cd06c4b200e8f. 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/CAPSU2201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3230f3b157c7c0414e78eccac34516a108e0d8e98fe5fab86ce2495d71c52b7e. 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/CAPSU2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecea76230d3c7d8e35b3fe1e17cc0994af9606acbe626181166aff4ef36b8d4. 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/CAPSU2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd5296c772a1a9a78d3667394ce904745d811c5cbd5a0ff8d5cb433c739603. 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/CA5KR2192514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca461df1bc6556fa467ae996df080deee57e19446c06cc03c12c2bdadea57d8. 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/CAPSU2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb308c62014ebf4d9db2c88186789e7b0c2629c2b0c123be92c4be58d9a418fac. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CAPSU2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3020561c7d81667ecfdb03c45e5acdc580762d0f5075d34c066c2330be874fb9. 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/QZK6F2016472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869afcba6f291756132923fcb5272ccc24757cf9b523d2149e1781803d51c5e6. 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/QM24S2206045.