thumb|The diffraction mechanism of a photonic crystal composed of nanospheres.|upright=1.5 Nanospheres are a type or class of nanostructure consisting of a solid core and matrix made from a polymeric
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 0x80d26636de1c58297bdcce508b529a03d16dacbcd6a4cb0d4bf4af4cd6cd93a7. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e48d36aa-a7fc-4ca5-b564-4425bd98933f.json and https://artists.proofprofile.net/proofs/artist/e48d36aa-a7fc-4ca5-b564-4425bd98933f.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 0x023a09e5263954bba64cd24a90eb6041f4b89fe87e8e2f19c51e759e32d8e15c. 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/USA2P1929437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aca80674977330d0321e97e78fdcebf8d3bf98e2a371f8ebc8c7d591c4cf26. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USA2P1929443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee78ccbab584a7d707e6b296ca546e5d95ac1dc80214235fd0cbd436721dfbd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P1929441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733884707fc076b9f330e37440b8c84fc7712882764cfd103af0da041b1ff76b. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USA2P2025353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f083e34868be44e77f05ecc0dcb3f004e563179ae091604349456c44a402b5b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA2P2025355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadde26d334e3db0a856e7a6d4625f96054ebc6c284cdeb8b2df5e2469658288c. 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/USA2P2130697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74d6e35f25888f4a80f34dc012208e4186d7a75e71791003482b5bbda53004a. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USA2P2130698.
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 0xa909514a1a7c1ac3cece890b6637d5cebe14d8ebd2cea35199df426e496b1bcb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USA2P2130696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab547fdf26248b4d74c5171bfdaa3a10d548b9121ceca96ba6b585ca060ac6ef. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USA2P2413109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd313ba9eec371feab3da5aa97cd827ed88a80072b48a905d72c9b35621a7b160. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA2P2413111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3365e8b22cf4933a00b425a1936b748da0b935d8dcb3fc68d33751745002b05c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA2P2413112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa492001dd54a590a842f16bc338a9367285ee340bd7dc6caff074c2361a49cd2. 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/QZADU1708701.
Traversing the Endless Road (Nanosphere Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda19b0a6ed40d084a055215ec52900b0e12102fac4909f8a4227d619f72a9257. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZADU2011702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda19b0a6ed40d084a055215ec52900b0e12102fac4909f8a4227d619f72a9257. 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/QZADU2011702.
One Giant Consciousness (Nanosphere Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57aa6cefe2f71c98f4d2d5d0e85382eac455efa5fb6ae74f5faa13c269ba2adb. 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/QZADU2113603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c87ffdda1975ba507a98b894f9f57201cf7647c9068b877e7b70df0e2a9ace. 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/USA2P2471839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358888810c7f0571ac0625ab61f96e7090525bfca02fdb886b6d52decfb0b84d. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZADU2214607.