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 0x3e46df510d6cae54354bb606db7c4ae06fbe3cb777f895580dd47d20b174a3f4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfa8a144-4332-432e-ad21-76d743430c88.json and https://artists.proofprofile.net/proofs/artist/dfa8a144-4332-432e-ad21-76d743430c88.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 0xfc9330367e772f3372d1b17e69fe0378d06d46b52847677e6e778ae919b3d00b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USA371364682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040483bd29e1d63870beb228b5df1a09a311d535252cdd53b256d8cf517d23b3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM7281747221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce927a0c8fe516f4a96882f0a7c8b118d3ce6c5a0243b649a984ff18ddd0e0a8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM7281747222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd274d50f2401459d54b1b84476f51602915f7a641fd8f975da3395bc806ea1c7. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM7281747223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3169ed848c22b52e3b62c0fb38d9741b51487ac81e85f774fe736ad15a39132b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM7281747224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd69ce779e1294cf28adfcbd415e43cbc1d3bc795ed9c9b8571e5c533bfc87a0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM7281747225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe43ba285ffa2bc9868e9b92938ecb390213e94ab29298152e7b471fc2fa0b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM7281747226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517ec175e5f7e585ae95fcdbe6bddaa48b7036b222ba1c3b503f965b4dfcf934. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM7281747227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805896ce73e35858dc7e85ae305a4f1552b13156da6d9d878f961241c78dcb2b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM7281747228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec8b7967f528b19c381ebcd8f9463a48a813b4600ba72b4d820589bd1b4bdfe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM7281747229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571795d2fb2b153c167d372a4aecb93a21ff4df894d42732fa9ed09a54ff48fd. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QM7281747230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f88bd8331a6c7520b7d88628dadbafdfddff66c175ebede9c73cd1d1d7ffd41. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM7281747231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93336bdddb63945fb2bc4efefde1aa7f744563c82938d411de4a356079f1e9ac. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QM7281747232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671be8ac188491dd525366060e10705a26bcecc7467c4394bdb88b4868522117. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM7281747233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec026938e12f195057c209c5fc53a6d0e143adf7196f9d8f0430b541defb1da. 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/QM7281747234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c6a457f1f7bf1e76df258ee92127859c75e0ee1d69ad2addecb1eac7bd8473. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM7281747235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f01c03e99848ff67122e4e03e81c15ef2f31c4de7d9e63026c1bc4121a6e39a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM7281747236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6c67bf15a5dc56f3424017aac903e2b9fa2c989886d967a63ba3b4cb8de7f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USX9P1057680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479659fd3912681010e1b4de700b5143fe2f891d2284f0260635c2ea91e4523e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USX9P1057681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535f4e59df10e3bf8c0bd2761bdeedd3755c8b72820b198154bb3b6a07c3a33f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USX9P1057682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ba48e17300799d8589f73eb6143417a89a99807824d39dcade8c03ca4edfe4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:58:25Z), 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/USX9P1057683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7bba2874668290529228a46fd42be9093cca6f6a6fb38f1928893df9e69fc3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USX9P1057684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbeb5a99ba892f97946ca2aaa99f4984691a3d3be4bc5ab34b0ae66b722eb716. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:34:17Z), 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/USX9P1057685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc773b476486e2dd68cc2a622e442734b8b33c7b48741b1372cf349f212bd4c19. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USX9P1057687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980a825f47c60e3cb2cf4972c49535d695d438f01da88c6bc2a0a108c9a88759. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:16:11Z), 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/USX9P1057688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522f0cdd64cfc53e9e8deb3da37570fbe5c015260d3c01ed72274ef378900a97. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USX9P1057689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d0b064014dc64e222c6038a414ec8bcf9d32a04195f5df50cf509305233fcc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USX9P1057690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca7e69e7e29cd694cdb067062f7f658eef0fcad2ec629758e842193049faf51. 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/USX9P1057691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c3593c73466b651794875543f6df21098d72b94a8b009129fa2ad530a37c64. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USX9P1057692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d4c1fc52a8fe6331ee9a32cab55c6b08460f0dc01819ebf334bc7b94c48296. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USX9P1057693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbdac79f65f08dffa67d5abeac98dcf2076eed90de747d3e2c6f4afe1f7e870. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USX9P1057694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84216334b111efd765a1398456bbd706800a9bb6e07cacaf6e5cdfb340d22c56. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USX9P1057695.
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