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 0xe5d523796320e681c1495d1cd9f6908b4a1ce4154400120d300804836a787d04. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c11bc47-170f-425a-beba-df1463eedc03.json and https://artists.proofprofile.net/proofs/artist/9c11bc47-170f-425a-beba-df1463eedc03.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 0x3bfc9191a9e7fd5046cd92c6bcb89aeec81f384e2d43499c5e037e96e8f4b560. 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/CNA132301884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460c20095f530f6ac9312a5d53d2155fd937eab18704066c29c7582cd47942a5. 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/FRX202189342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4b1f78d44edbe1c72e19152e433b7875b5ecdc1d6b4bd05f5ba214e8d14500. 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/FRX202189343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03147035ab868c230595619404289e57ad1166a7803b741b78fd740b06c9cf6. 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/FRX202189344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde28037b227461c9a4a3c9983eed80b5a8a2a338dd11044e08456581f9fb46e2. 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/FRX202189346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f58fc7bb0c3475ec9b25764e4a6e21c027a96b7db2e42e6c645c6fae84db3f8. 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/FRX202189349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46376feb2ae090f6d2da9da317e02feb91c4e567772fa43b594b8d6d93dfec00. 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/QZES62450164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03860858ac0cd6a4ab89ababe0394b80dbffe049e4e8bfbc7b9a41db20102ad. 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/QZK6N2290536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8298dd0c0b50d4cd4e69fe1537ab6e66cbdcdd2853abf41c2007af6cd79c1a5. 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/QZRP52266310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9436fa24f63c2e4a7ad66ef5c3c779827b817e705ced37f32a203f4c176aa12. 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/QZNWT2160348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16748e581d2d441cf0a2bc294a2dc6c53b71ec74b16b992ff205035c4fbb1c8. 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/FRPZ92304390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ded496f9126e77af9ae5081e967e472e35d02dfb25440db00f888800be520. 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/FRPZ92304660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251f15c31cbd1e0e34d11e3da116cffd70a5099fd92ef8db95da06aa33159be8. 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/FRPZ92304570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50954f88d420bb1bca7ab34b127084e235bf763f1f969543ba177f2bf4e5cd95. 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/FRPZ92304450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11198145b2a72fd417a1a8dea78cb2100282479ba449bd4f6b249e1831df35d. 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/FRPZ92304540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb574dba829d67db9d6fb9904d399aa17f8e3d4413ec7a72ae361af22b71da08. 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/FRPZ92304510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f8e948da562d01efbf14a26b499aa0848850046634cac9951880f084c302fd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZ7Q2594186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9c78a65401739c0085045ed716fcb8dfeb780affacf3d0ab4ce1fe583efbd4. 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/QZTB52566174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb7f792bcaf01e7809de719019b5bbdedc8c3716a57624cc091434e13c084a5. 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/QZWFM2585864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9c78a65401739c0085045ed716fcb8dfeb780affacf3d0ab4ce1fe583efbd4. 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/QZTB52566174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbf7974d5eba6ddce4be41d13113eddf94e4dbd255e0c1a81fccbb5943f7f5b. 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/QZZ7P2413361.