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 0x53c408ea7933f439943b8881199f9b9a802e69565a377842763f708261c5729a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fcbc81d-b8d5-47ed-ae2b-d77fcbbcb6cc.json and https://artists.proofprofile.net/proofs/artist/4fcbc81d-b8d5-47ed-ae2b-d77fcbbcb6cc.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 0xac3cd0c2fbed6f209c7aec14559db8da027b51363a771af39b9f1fe001ac6efc. 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/NOGJD1601010.
Atte munnje sáni saji (Just, give me the word)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9077daf825525cdfb6562e44dfdd3b76d7c5a5c5ce73bd80527424381abcc989. 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/NOGJD1601020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504aa92fd29ff926a5cdff91ba2cdf5579b070d29a3262306eeff1890244449e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NOGJD1601030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc34b5e94c3b519b9a1043875204bda9cd7d9c792d4bb0280ac989559259443. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NOGJD1601040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffd4a22b679bac17c03dd0b6ecde2ebf217a608b298e66255d0ef93f551e7fa. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NOGJD1601070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ca58e9ea4cdfad7d87acf79e5563e2298214879542aefe71594ce75428cba5. 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/NOGJD1601080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481b99de8ca6fdbc79ab59b7bb7a02ae47f329b1ecf2ff9ae607c97ead14b9ab. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEYOK1852183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd81fd3d4bb1589c3c5facc083e3274f6ba4319255a4a7d6158006321b620432. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMBZ92356948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd7b9386a91f96d21ab53a39354610a19773325e6a20d11e98f4be37ab98689. 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/QMBZ92356949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4108e8ebb05de62dd296d4651188487774627a5dc80ad360aa65baaf7a1223c8. 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/QMBZ92356950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78f1027270570bddfd67bc03b95756efc49114b93ed543df1c955a08afc272e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QMBZ92356951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b140847cfd5cca588dfcbdeaab29472f5303300766037984c55112cc9e9e5c. 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/QMBZ92356952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c266471aaa36833bccea5eca4282085a1424b8337ada6215237d29e3dfd036. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMBZ92356954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7bbb92ead539837fd6b50621928fbde9df8e269fd28683ff46842d85f74157. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QMBZ92356955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65f2e055391e0d724bbb60df318af6253ac7e0cf3e1f2784e6db76cd2279cdd. 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/QMBZ92356957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655141e556879e1432a630f1568e8d4b24d13de136d2e7a4794e0d733b6d8907. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NOGJD2106010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21682fb197da756ae2957b82073ef9563bdcf3f6bf366f42718a505059cb431. 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/NOGJD2106020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfd315ff555269589f9489323ad89052d0d8256e0810e385d7f1f89d75a230f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NOGJD2106060.
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