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 0xc63d6a9a0c9eb27918cd3f323b9e0240323b733e38f814699cf018307fb54590. 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/8bba4640-00bb-4623-81e4-0f87ed992ba1.json and https://artists.proofprofile.net/proofs/artist/8bba4640-00bb-4623-81e4-0f87ed992ba1.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 0x882318b2113955682cf4af5d8b8a072ce1c9be849edc0ced1f1d760b9444c60e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USDY42153666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2883efa498caa65fdb23e52efbd02b007f2a0091bca0d11505404f4be64b20. 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/USDY42153661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5585387bbd8b962965d0ab07a03a814265c88a2d07bd3859a7fc88019448bd. 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/USDY42153667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3207243cf5ec1253e8b42158ab3f6f24092e91077176ecce578835c383756c4e. 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/USHM22175795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685b3ab92bef1442707ab744e9df07d1e02efcc050d187186021cee7e4ed0a1b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USHM82140811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971935c285bce858a40624571634a46281686e044c1b7771d07c01e756a2121. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USHM82140815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a155008b20df6a0a5dfb4dc35a553d5e1ffc9fd2037a353ab11e43593a384e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM82140817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f9282185f7b98d5def668ea5697f1e61380a4b02ad7fd9702ec0c940de84fa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM82140818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b72ddfde32d9fc38282305e890c1d9efdc5bca6e1b990e50241594259e33d76. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM82140819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6bb195630c60554c91da86d56898821f9d3a4d9ae3eb50e98da212ad3dba9b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USHM82140820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532285af4a0ffb33af9657e161b0c6d69379de831d9a7025cb5aec899f80daf2. 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/USHM82140821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508ec3238f209e7d48460f8eda677b90528af59a3191b918ef5f0d6fe5d58e04. 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/USHM82140822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4223317879690fab3208e53fd650edd4a0fd16bfe7655b18f8034a4730640deb. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/USHM82140823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf970adae4f94c801b1839d8fd38c83a35e251ef14f2d64b5e7d0c2bfd8e5d943. 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/USHM82197513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454bd8a49393003f8bee1816fb32449b1e5a2c0080780608ce68eb37ea587cec. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USHM92144599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014c2a35f458280de6c36f8e747f4effb11c919f2975453d6fe09e99871337ff. 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/USCGH2267098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8ef1595e9d70e30c08f56d56c1cce260bf047e77c371495a219ba652daf3ae. 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/USHM22214712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8ef1595e9d70e30c08f56d56c1cce260bf047e77c371495a219ba652daf3ae. 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/USHM22214712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51a5c2c49a662a2f9b1641508aac736276c81092ac1847d83adf9d0c1098ece. 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/USHM92293153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214a849fb242b720c5cf0883ef900d48b06ebb8c367cb16a1a809e90ece55e75. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USX9P2375952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214a849fb242b720c5cf0883ef900d48b06ebb8c367cb16a1a809e90ece55e75. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USX9P2375952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4bd3dd0066ed593c4ea803c81021e8cbbb5f8b42edc7162e2830276a68f50f. 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/USX9P2375951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c09fccc2d6536a3061170af38c5b46a2e34a43862dfda09667597b64dc66690. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM92481439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e1def09e308029cb72a6be7b722094058570e4aa974a4d3f8174a83aef3a56. 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/USHM92481704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d85c224990bb28c1975d6c00ed09be366b080e632e3e0fea8a5a2b709fd70e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:14Z), 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/USX9P2419988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27cc3cb441ce9c48124ac8d4422944245ccb50fc4cd69c6c0b7300145ab1366. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USY242497670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d07b016c0a427a95b126a291c10465da0b8ce0405c517a44133a7f333f6f15c. 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/DEZC62507267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d07b016c0a427a95b126a291c10465da0b8ce0405c517a44133a7f333f6f15c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:02Z), 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/DEZC62507267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66d1f061e5dba82aab7a400b7d1f5b2dc648aa656e97d6d1e2c6cabc003669. 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/DEZC62514936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c34a153b08ef30845ec06731eab2fc21fae4a9d74412c5008433875f7359ab. 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/DEZC62514938.