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 0x16605c716697e8d1081c312389c078ae8b856412f87e1de8f6d4f664427648b0. 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/024e63d8-ad9f-41ae-959e-5ecb7160b713.json and https://artists.proofprofile.net/proofs/artist/024e63d8-ad9f-41ae-959e-5ecb7160b713.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 0x96dc42c082efcfb2fc1d1911457b646b27b8e801b3c2a91045ebe420c3acdbd9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZNWW2361155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cec40729453e8e1905961845136430be60271fdd9d73e7df2153b2d944e8a05. 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/QZNWV2390092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b6ac1e96f05398b1ff768c90169e8964c20319cd5f866c01c240ea59ed5cc6. 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/QZNWX2307162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea22a36ecac5b3bb20f8cb7a0d0f121062c1c8849201fe1e03b53fa83a2ad653. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNWX2307163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cdcf1ead3830c1c085fec23674b8167f1d859e88bd97294b00d9f5215cc544. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZRP42309491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93f61f6b12f92877e62cb4df489e81a2ce7dabcd5add7664ca6b681f6859edc. 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/QZRP52314685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa168d3b7dfdc92f5e72d1828023cad9720fe1c52245aece9a26b33226c925ebc. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTB22395504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ce831633f9c989735602cd815bc71cccbea674a0b5465a9ea7b4e559f18f5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTB22395505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca04ba5a8b2f8d6798e086a3ef933b43c902d80178ccc9f43d4af16440f8b013. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:05:19Z), 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/QZTBC2359729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd23142fc13545c4e9c8374327ef12310547049c0b6915923f9c1551251301. 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/TCAIJ2492439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0748b088a09baa149c37682d865315bf5d52a4724e3e83e43b16a113cbbc34b. 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/QZHN62457001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef26fd8e502cf0ffb6c9817ddb71ef0edaf5c057925a4ffc56c083d4356f042. 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/QZHN92472388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3758a1cdc6a05847143bda568fae66bb00630a12460fe7f97b0c1725558119. 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/QZHN92472389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb822f7d6fb0a6b6b7f845d9c2355704d223a70c6b5d59145c0b9a7dd2ea67a. 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/QZTBA2313037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe805a522c6f4c4852a2378fafe4bd2106ff0a9873f7ca04c181cc74b2e6297c4. 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/TCAIJ2469592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d42051475ff6130312903b3846e7490da5f1faeafaf460f9295d52433dcca2. 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/QZTB92447440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bfec56188d34912125cb4159f64dfad37846fade5a604a4645c4d9dbbe7b4b. 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/BCVK92401812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939dd3649b52cb442cd3cef66843456ae4c12c18336caf70f1f991d9e2859441. 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/QZPEW2589578.