Unique primarily refers to: Uniqueness, a state or condition wherein something is unlike anything else In mathematics and logic, a unique object is the only object with a certain property, see Unique
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 0x4b9e4a238284996d5390037d56f1d70a940cf3ed305e18d1632d8f3b323847b4. 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/ef0fdcad-92e0-4240-b8ca-b1983c11e6e3.json and https://artists.proofprofile.net/proofs/artist/ef0fdcad-92e0-4240-b8ca-b1983c11e6e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x60c56da0e9b9d88c427f63b09b9cecd89a726c3be737ef0bce6c659884e964a5. 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/HUMAG1700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b252e5ba8bcf73d8755f090b02e6e1bfbbbb1778d26f9fc0de1c103ae73233d. 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/HUMAG1700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0406200c2f695dbec25c161dccf7db5b4d534b67dd61b6d438ab50612cb37503. 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/HUMAG2001146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895d21488168bbb32a994a48408bec7c7d2cbea94a2d4d98cd59e8e52be78281. 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/HUMAG2001151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ea66d4028d0afc915a19495378a4d9b296e8778fa8d1cfb86e8ed52067d893. 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/HUA692400140.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a27d7ccd9b01d1e244aca9ccc9f67b6cb8c8c2a22f3010b5282d9378d62366. 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/HUA691800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbd6ec358954d02a6d26ba157b8b4af3751163780aea534f70fbfeee2ac117c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:48:34Z), 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/HUA691500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf64d5cff6be581f66075e5ec75603c27556e5d56ece6eee1ff24585433c8f4. 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/HUA691200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfd4e4f5942c3404e730e72e070943ec71a9ffde11ee179cd0b8e319879bb97. 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/HUA500900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f9b4aca9716a69f0b80d81e64c46c6716d9b3ab0cd20d3d3b44808694e69f4. 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/HUMAG2008219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeb93752e247ee77ba20c06433e3c201723aae004f5d48e702ae0bc11a69bd0. 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/HUMAG2008818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441e0072646fe42113d784e87e894a469f6141628f367b995194f2acb80c5d17. 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/HUMAG2008220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56de4b00caec2530257f2e84fca4523d1c881710f6944db60c6ef3f058e91acf. 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/HUMAG2004267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea801aa6cb477e3f21c88fa5645ab0bf23b227f8b7f5b1e57a33a7c6504d7326. 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/HUMAG2008224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe683d2996898426fd62b46773815cf188484576a492a8e4eaa56d3e16591266a. 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/USKO10701517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbceac028997106d90ed126378c019d88d32f8550324259473cad36367b7f04f. 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/USKO10701491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8922f59493e50145d893c6436f57f1e97943699bcebedb33be092d0e34640fe. 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/FR8GV2213540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c1992fbd5d01c6b5567aa9bb9dff030647094ada617900c049642320579496. 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/FR8GV2216520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf669fe3d8853d5225303aebcd16fa4cd43cf4e2a515b9918ffb8a3ca06a722fa. 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/FR8GV2215130.
The True Way Part III, Thru Heaven & Earth