Sterling may refer to: Currency The English penny, historically known as the sterling Pound sterling, the currency of the United Kingdom Sterling silver, a grade of silver Places United King
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 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 0xdf4ef55860682c9cc54d50af93ea6a86735f9002e07a1e79552d0bd6b50c1477. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd92f3b6-b222-4ff4-a7cd-57e25c37a8e8.json and https://artists.proofprofile.net/proofs/artist/dd92f3b6-b222-4ff4-a7cd-57e25c37a8e8.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 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 0x7579f37c64273b1d07309252abd60e73f28dbfcd2dcebffa989b7c35d5c03370. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEPI82412105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c5a772e5ccefd64e14f81ef4502a70944aa195cb727d3f56fb1da9ae12f484. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZS662438065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bce7bd866eb07ad0006efce5d6677273406e40bcdd19278caa50a48dbeb67b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZS642462370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9972bb6745bd1f6437641912a5b9dc98a6b7fc6a54f0bd4a8fd6958b3b06fe1e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:38Z), 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/QZMHP2443063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505cf11db51af2540bed6ed23a193c819cb4e4f0c9210a945cef791a739cd82f. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QM42K2419241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b7a9ab36b5441d7a4467b75772d5da42773e9e189fa890f75866b2f32ced3d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXA3V2409738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49554b66fc91fc6ad40399a9c88a23e73f01c455b4b02046225385de0f2c1bb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/MXA3V2409739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3a609d4a43fcbbcff0eb7042cc30d68b1ef7e57770fd902133b738a7b5d82d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/MXA3V2410069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6dbb642501e1e9e296f218812381c9f4c518018a5cbe1305fe9ebb17cd67b1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/MXA3V2410070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75685df434605e35ad3faef75198c9e2aecd8ec3caaad194d69e1c859a6d712. 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/MXA3V2413348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3eb504bee675f34078cd7afba1f2797d786637c1db3573ae9beecc076acf6b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:44Z), 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/MXA3V2435154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c7481a622630d36145f6af27bc62031f76cef68393bcb5bfd50771c5bc556f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:18Z), 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/MXA3V2437054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b5c1043ed2b7dc595b948acd402d6b8131e32ac767e36f87694c913deed2f5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAQOI2529250.