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 0xddd7cad3380bf1b23647a0c5d95c62b59e6b85da0081dc78848b4551a8792388. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10838a78-c177-40d3-a0fa-edefe434e6f1.json and https://artists.proofprofile.net/proofs/artist/10838a78-c177-40d3-a0fa-edefe434e6f1.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 0xfa220503352f59a8cad1c234011113f1ecc167524aa2b29acae47d4af01b82b4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN52296985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38cd48a8ce23fca47bd1310a968f9039b0cc97dc9b88fbd6237698db26424f8. 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/QZHN52296988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9624eeaa67c008ef24a6bef214293ffa651a360b5126883a824aa58864ed07da. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZHN32238372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe784eaaae99a5d4a4206c111d8456800b809965c29eee97b099d19a109eeedd8. 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/QZHN32238374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fdc07c9f4da5c00cb2e582457447210a6d76255e298060c66c0bdab8961690. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHN32238377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aa7c7e509bb111f1b704d52ec652603660652ebfd74e660592a28e496a971d. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZHN32238381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96303af94123e9987ae1adde32eb8ba0f22607e3dad04d4137eb02f4ad3c34ff. 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/QZHN32238382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b791c40a18b2e7534680f63371374959b37891043d263d0dfcc3b9a8fbaba6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN32238383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63460e649124fa209fddbf872e508fcfe1dbf41e4f5c83cd1ecdc868572cc9. 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/QZHN32238385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84402bf2510ee6d662c878635ea95cde07876b4f73bd63049c7d72d05482969. 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/QZHN32238389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dab1d91f371d5d9449615277542d0eca60c7120103c4b73353dfdc732c2dd9. 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/QZHN32238390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1513d3b8563e06c4db6d503c2e43b98f74b702130076f4aea964fc4a6ad37456. 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/QZHN72209468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac8c7ddd0cb83a33a439998d11a878cb1b123eb178963d4940cde1727ea9e55. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN72209469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7926b84c90c9a783c524d9c405c1d90302d394041676cadf2ae1fbd28e7f42. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN72209472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2654160b25e87870b77e0b696a658413d47d2ad1d5d5814b1c50aed850778760. 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/QZHN72209477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf80b3c78d05d626af741da451a6790df5b9fbb0aa1f72c7e5b19262d3358e7c. 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/QZHN72209478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d2d2cacd882ffa1e82d56bab77c011fa4ad653ab8f10d16342bf5031564173. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN72209480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83163aab12a2575c99dbe66bce9fd3a62147fafa300bd089159058ad0f639d15. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN72209486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda6d5f5985d0deb90c3eba9ef7d9efd6247b873c125ac0caee265e83fa3b320. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN32256883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f7cf663a4d392a4c0aad84de30c89b3a3b89bd69a9aeec57d42cbf153e853a. 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/QZHN32256885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290b4e258fa08bacbd357d6026c5feef2501fe856b75739c71d48c22b6844d1e. 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/QZHN32256897.