Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface o
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 0x8e35cfcc0d8c33120e402c10179329a54cc802a59fdea1f0bed6305a17681621. 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/f34690fd-3053-41b2-824e-6d6296cdc156.json and https://artists.proofprofile.net/proofs/artist/f34690fd-3053-41b2-824e-6d6296cdc156.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 0xb65fefb732e991b05121b411b4d47f06d08792b0c5e17f8e29402c4d08a7dea6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ITK197300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f3b952c1c62cf2bb622bdbc5315021d07d503af5db406aa951a3e413c8ce06. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:48:19Z), 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/ITK197300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe092410fefcb9e4efaaf08a8fc2e3db28cb9a68e9e398caf12de8262f5ba1e43. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/ITK197300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3839c87812d8bd6eb76052bfbc2bb375fe874a3198da2efbf7849c22ec32de5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:45Z), 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/ITK197300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf595940bc4b0a1f45d8b44867e913b38a450d0973b7912ac0ec1e157bd92772a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITK197400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a9d4ca910b207e831821c63af26e94bec68c49581336f64317b975ced45f99. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITK197500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafe87757fcc7e594af831fe62fc44a4e64283ecc19aecec18cc1a9882ec7a18. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ITK197500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c3c30b21ec525b5b30d66ea3e9a91b01462be1801e2223de78f04fb1737979. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:57:09Z), 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/ITK197500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca02b13e300b628d3c585f028046dd6f25df56474756f8dbbd6491a2fd4d3c8. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:02:38Z), 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/ITK197600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473f3bdc49b3c0fe5973a7ee88cb6219aa9528d83aefeb61c8e5f5f517b4390b. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:05:14Z), 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/ITK197600014.
1978 (Gli Dei Se ne Vanno, Gli Arrabbiati Restano!)
1978 (Gli dei se ne vanno, gli arrabbiati restano!) [2018 Remaster]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac56fac748e8b98b29c566bc6ffb62bc9565557c64e9c0636b72aa4cb9736826. 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/ITQ001800467.
Interno con figure e luci - 2018 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcacdb00bc9a9a2b708466f5a4cff5f69819aad05c9f883fa1a1fe34669e4f4c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITQ001800468.
Hommage à Violette Nozières - 2018 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114084e4003eeb0e41710df256288f23e55e47007668b6875fa0a1cf70906735. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITQ001800471.
Acrostico in memoria di Laio - 2018 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd140cb1422f63ed4f2f1b474063bd48a917f80337adf8b9595cf41df14824460. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/ITQ001800473.
Cherry Stars Collide: Dream Pop, Shoegaze and Ethereal Rock 1986-1995
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da90109b5c6bec397bb1353c4b704c09de788941cc6acbc2ead8dee0bac11ed. 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/USHK99801702.