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 0x63f4271ff843e0956226409fcf67f84f49375328ada60d716b7ec44671c7b2d2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e375dde-e278-489a-ad3d-34c5b6054cab.json and https://artists.proofprofile.net/proofs/artist/7e375dde-e278-489a-ad3d-34c5b6054cab.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 0x807709bc5f1c80b695ae41566f35c3a230c0f71368046d547e114c73427bb11b. 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/DEHK92000698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe619cfb7865fa181bb790c7151dbfa1b6de815251ee1339c1f3403f274550c31. 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/DEHK92000700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602c3b36546fd430107f0a690f4464fa28c9c3c2cf5fc43625ec69acf98e5654. 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/DEHK92001622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd9c6b00e6780671396baa2b3640f2f2295a8df0962358bc918384cf26b6012. 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/DEHK92001625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dde2754b6840aa3f265f6a412bbfda1021c661b73fc8dcf10e1251c6054477d. 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/DEHK92001626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ae502de164a0b98934f2d914b772c7d5738575d49c347aeb362dda6ff404d0. 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/DEHK92001629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9102cc8d7398949f1baa7398de3591c6d516affdc8d991767611db734f48fa1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH6541702340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f78f08085b7202b0537b8950444eb0744f4231426c49938709a56f2726e83a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHK92001642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dde2754b6840aa3f265f6a412bbfda1021c661b73fc8dcf10e1251c6054477d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHK92001626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf924db115a48ee437afa26a07ce83abf5c7abdcf990f7af0c87cbef3c2a53a86. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHK92001665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c68caf30ef612a376edb2d42403e3510bae4351bea79550b59490fe4cbe7a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHK92000628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c413343f3d5b388e101fcb472be07850613432325a36ed7f459d538cdd61b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHK92001648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f17b8b5dc46a1961d7781253ba058724e51b92754a156b2792c5c31a26ea556. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6541750323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe619cfb7865fa181bb790c7151dbfa1b6de815251ee1339c1f3403f274550c31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEHK92000700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521265d2bf2e8fd61bc3dc0891c0664fa37903518cb4ca9a9631af8d65697b9d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6541886824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcc309c9de0a81cefe77180bb2c2dadcea41c082e5cc11bbea0ca64888d3956. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH6541887104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dc9b53bacdd3b2a8b7fcbbcdf5368cd7870710154a092d19fa9e4a797f3cf5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEHK92000626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7ce75d39643bb16db5d2f331d3147779cdd2b4f8e45ad8bdfe528c1cd720df. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6541887091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a842d8aa6b3850d0a95ac80d64d3ebc59cdd7e578a42e3fedf411c5c39a48. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEHK92000627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602c3b36546fd430107f0a690f4464fa28c9c3c2cf5fc43625ec69acf98e5654. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHK92001622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9226a0de43459a73baa5bca9eb95a6042b94e06c1d2f9de828f732165354579f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEHK92001653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791c4f391c9899cebf56a064b9beb2c95bba8eb3f9b9888cd967c7d292d1310c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH6541702342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd845f15d08bdbfe0624430233903254098822310f9287ad99688ba6a3a04f6d. 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/DEHK92000696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef70c2aa0a0cc3e6d69e0ed4744e35617e7499824300a0d8047da0deb0dfb49. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEHK92001634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bae4b294676de1aed584adb692c61b607f10e86a36365b001912d8488de3a8. 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/DEHK92001623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ae502de164a0b98934f2d914b772c7d5738575d49c347aeb362dda6ff404d0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEHK92001629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f1fdcd69acf7f1240ee8a45692f2d680c23522c9f994667478c4edf8f6cb05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEHK92001659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ca3c99aad32628d51a74afe36a5f50c436c42510e358b46f8242b3a0bd3c6b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHK92001639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf2546cd3656ae79808323a23135ae386f29135a2d032703bce37c79fb1181. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEHK92001668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528eec6bc7a6d376be16051b24a0715e7a45deec6dc20d7f6d4e2db52bd353f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEHK92001667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9b7522b4c77ecf66111ef4cfdfc987708477ee2b7f9f30ad8be5306109bdcf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEHK92001632.