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 0x656b7ff0428aac151959491859c282554a3fd2313d349c13990798ae44350f31. 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/b26fcd51-7348-4ba8-b654-656c69986fca.json and https://artists.proofprofile.net/proofs/artist/b26fcd51-7348-4ba8-b654-656c69986fca.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 0xb662b6bc8b50df1f123e4a21f6322d36dcc7b60d8ba0732dcb1ffee2f584b698. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USLD91757226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5936386aafe66f637dacc830f90138a7532c037537c201d8d60e034a6879051. 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/USCGJ2483704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2544621b7dccbe9696b19e871daa93db10ea848f013ccd4d49d10168bd62b4. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USLD91757333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeff5ed08847d18624cddba16c2ca86b3d55e44773ceaf0f4d28cf25f1ae11c2. 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/USLD91758138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5525f06e8fd5a9753728c470509cfbf85dcea0e192064373ea281f1ebd8921f2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USLD91759614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe178befadb553a96a75897c785b07911cbde82eea3d9c254d7bfa4f1a9fd257e. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USLD91760552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1254ba579652b361b8dbe697649d44c544fbc342605363cc48f5bc2cb7c6b36a. 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/USLD91760556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5525f06e8fd5a9753728c470509cfbf85dcea0e192064373ea281f1ebd8921f2. 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/USLD91759614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2544621b7dccbe9696b19e871daa93db10ea848f013ccd4d49d10168bd62b4. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USLD91757333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe472fa2149603d3bbe05a0db25dafac22372e89a58245a1852dd9473f6a725e9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:29:57Z), 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/USLD91762916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311f89a083fce37bef1e12697ec0d5cd4d88263ddf070a5bff98cafe6f18ae16. 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/USLD91765074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc490e6e2d4b49c02416e8580a0cadc9509835d4462916ecf785588f5e8ae2f70. 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/USLD91768338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b8153aec2fc697730575bf473fb253922983e75d79acfce3b5419113a9f95a. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USLD91769510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5f28f587e4df3f5a6d8ca9a297f19bb842651356f46183c309095aa372f0e8. 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/USLD91772830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73024b6cde23eb49aa3924a6d25ddefd43b12c0976a164b1b9b5aa381d65569. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/USLD91772831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38142afb4624fc6d7167c4bb6bf5638a11a3360da80fb67920b6ddd6a4dcf24d. 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/USLD91772832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce10b199909a7ae242c713e657e60b38e1387181a21217fb5cdbc38fabd0084. 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/USLD91772833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7cf7fe2d3da976996c2117daa1be48872cd47a300110846db6221b0aa600b6. 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/USLD91772834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe826adca78747cd6a27ba827dd1e1306ecc79c0f92ce7896a9133ee4598009fc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USLD91772835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e69f94aa8b6c11bdd6d4cdfd544e05b425abd142db9b9ada753a1dddf43dca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USLD91772836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3bda04b371ec862b8d249e139edebbd4fc47bc6cae3e8619fbb762f7660553. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USLD91772837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c86e81b46f5e0b09d0fd220f30b58ccfed8b2e626fbe0883e535256f21f6fef. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USLD91772838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9563c7af99e2ad9510290128e825a6a30eda81d5494f177bf287fee766e8c665. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USLD91772839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e9c22de531fa07a361d7d68a9007ac91cdbd10d8f9f3b07c7f489293fa7c04. 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/USLD91772840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a5c25153e546fc31581b22fc443b32d61ad6dacb1a7e92d60eb2302d0145e7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USLD91772841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d511e6103d00792c7fd3e6bacf2669c661e1e5ef1e0f6f1534569db6540751c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USLD91772842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885865f48172d996720970ace53fca7eb336dfbf5b990d591736a4448e817418. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USLD91772843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48abaf640571eb7db704b12909ffdda2f0bf04339f1b3d6ff4ec1fb52b0a51e. 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/USLD91772844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3dc4702a94151ce140749eba0feda770831b78698956623aab4dd1975dd78c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:28:08Z), 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/USLD91772845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc490e6e2d4b49c02416e8580a0cadc9509835d4462916ecf785588f5e8ae2f70. 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/USLD91768338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34983108d57b60140fbfcec5fcda98cfa672226840c8441fba580f161e5108f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/USLD91780912.