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 0x8f292874014442d68c9e744379f158c8090068f8a5f710f5ff9645238d531d84. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2a3b669-19ba-4de2-b573-51a6627eefa9.json and https://artists.proofprofile.net/proofs/artist/e2a3b669-19ba-4de2-b573-51a6627eefa9.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 0xa8d78584ef612667672a514ac3350af109a5e4a571593e0e53e025f5e1e3f96e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2055385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573f8eae5a5b9214bbbfe2fe9e49d05f584489c6c46bc704362d720ac4c6afa8. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:32:07Z), 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/GBKQU1854874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d08ffa5fb70e77ab2c758209e5e4d54102705d92a6a7698a36aa1ff849e692. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU1746091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821023008f97c8000097ab66d1e38e70ae020e2d4d38b66adb4933a2d8b43c77. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU1781279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1463c0933df81ec3f644d9746f27e3981db3b954043dc89880eca04dcac0b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU1968208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45b582f3db20986feaabe9bc54902b4d8253cae138a25a7872bac47ec864002. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU1854873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509b4b7c10516ac4847777335ab1144ba35a7af250f8fdda86961d8d05b22327. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2432497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd332e8d1180f41f3e2894d8beb9eb4a688b9e1d7a4aff3bada2a6f17d1f91d1e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2401522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a251089e7ccd6508f680f159b4abb7a42c5886ced37a5562f9bb7d18741279. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2103680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492b08b355e9275a6680d36bcc05fdf8141b3a1719e04127b3798211ab60ea3b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2109944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0903cc92894d283bfdf433d3b59f28846d2f175b568b791811a2df786fff6e69. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2073337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3332273de58d7f8bbbe6c9c393c3d715f2b828acfd383210687c5f999180040d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2000622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9835751f0b71b75ceff6ca583cf3cf3030b77804e597dd750933f9282afbec. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU2000621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e5d23ad3a670d7e6180b94dce329769d0963bf3c510395b048fae24b9eb1f8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU1977636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b188d4a6b3d9b202fb0fb381a65f124165f4d6896fe8c3671280295ba815cac. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU1977282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1463c0933df81ec3f644d9746f27e3981db3b954043dc89880eca04dcac0b7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU1968208.