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 0x076b44a577929468baf9f381650cc2535a9dfe1bdae2e25d017fd89ec963cba5. 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/597e85c6-e2ab-4a08-be02-ee8d9841358a.json and https://artists.proofprofile.net/proofs/artist/597e85c6-e2ab-4a08-be02-ee8d9841358a.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 0x3e997e85d0dcbdbf04f8fb3c6b76bec4f892d4abd38acb9f23589009006b619e. 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/USA2U1700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cabd9c268f372b31522192438801a2520aecef30f6330fc712e1902581c019. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USA2U1700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe181d8df263bde2bf08d1b17ecabbb20c0766a4ae329cb772067048aebf037ea. 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/USA2U1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e54057e1b94b609315a2fc9387614192c35c66f65d57d4fd4bb550f1eaf9fa4. 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/USA2U1700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19413d7ffd063bec78b412e5e8218cacb305861c96f2c59f2e6a3c20ee705393. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2U1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b95060c62b9e95d5cae7a5621f30baeafd2f7ebe4b83e536b8d2af0a42e240d. 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/USA2U1700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd25bce8814ccb0dfbe65b99a5d69e10a37f40f232617bcd98e862884d098bbe. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:05Z), 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/USA2U1700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4f9a5e54ce9b4d9b2db9821cea669baf80a4221519fd329432b5aa3fb91e7d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:01:48Z), 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/USA2U1700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689d48c029e39f5b984f88b410f4cf2adb7dd82f393bbc899d96bedc3fbc4a78. 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/USA2U1700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10179cae21bac1c1d4fc71ebfd360ec019b0ba3e952f5f629b36ba15985661be. 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/USKO11900417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac8d67dcc95e07463303ecdeba28a72d40f7765b384da7b31fee89098621a0c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:59:23Z), 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/USKO11900418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4baa533f6cb711982a5b3ca1ef9ed950abeb7a14779daf7b8c69272a73eff5. 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/USKO11900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd8acd646ebc9cdab9b06e072d03d67b2c70ab26b17761f9709d6d05b8599ab. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USKO11900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8767ba52c87ca4589bd1afc0d0abef52bc725182030f64ca28bb2b71c90d00. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:13:18Z), 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/USKO11900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa543fe8af94a18cdd737d2e50a67aafab371562e92a27c20f27e78fb7f8fb188. 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/USKO11900424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bd4fd996eacdafc60f297d884b5b051ab66316a7f44c92d722f46637e5f7e7. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:05Z), 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/USKO11900425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f00bbdb39f3b98eadd6bb3c6598c462aeb94b99699a9ff1ceea9355cb9552f. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USKO12100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577c7d91a0ccbf7de54892b0a986225c8ca7880393abb00493a4863f6dc1b44b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USKO12100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf32950b6d291274a6b92027eccc2c257301d068f219c220df2cb0d63cba1078. 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/USKO12100248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a748bdb82e205f26d4c5365b03893b54f72bd88588fcd18ac5dbd72880ec9. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USKO12100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02456967e2008cd59a42f88a100a7fe59004efd7d6a3572521c8f76fe1c90945. 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/DED832400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e91a062e616140d7e51868eba9deb9b4ba56fd5b37b74d8e99a4b14cc5df70e. 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/DED832400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5113ae05d2a661824eeb5b63cf295264e2dfb994560799878e6d7af4832d4e00. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:58Z), 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/DED832400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31757845407af7d6242a05b01ec4d55e588ee6816e735b162601bc94442086aa. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/DED832400388.