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 0x6a51e2716cdf3facee1044e26a3c36e556164432373be7c9cc21efaccd20df62. 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/5fb17dfb-6036-4c84-b9e9-c00721178618.json and https://artists.proofprofile.net/proofs/artist/5fb17dfb-6036-4c84-b9e9-c00721178618.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 0xc5916bb3b880d63b7626826ac753bf1e7c8410a525a6564d53ca8330dc48bd60. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:23Z), 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/TCJPK2063162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b78b53ab4949d915f56a9da319c9b77fff0049ac1fe916c92541578017fd139. 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/TCJPK2063168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca507e959a0fc80794a984df25942d527dc9a214215621248d1dd6d4312492f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCJPK2063159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56e25ec8bc17661600088a5603289403e76cc60f923d13bb3a64763855861cc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:54:40Z), 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/JPKI02114476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efae16a944b1807c83306c92197535591a6ec723e3e9eab5fb1d031c3a437aa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JPKI02116427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f05ddac388d5078daf1580b77ef604b7ee470d986a00443c0bf2adee1baf2e6. 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/JPKI02117307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7333a60e16fadbda843dcc0aba754ca73a9cb9decb3f92172eae14032cc808c2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPKI02117630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ebda992a28b03990120dce7852c257d5357a68d648bd73160ff7158375f7a7. 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/JPKI02210224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8250f30a20b9dbcd4c8a535dd3056c68bbdda1a116d267bbe0e067d53727d872. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPKI02211679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39420041c2b50f87388bf152e4459802e7fccfa9a004d50769f30acad50ee039. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPKI02215826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da097fbb8a19ed440744fe5eb9f7df2a100a59819c6ead6e4d292b713199e97. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:17:04Z), 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/JPKI02310740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277eb59f4c3a2b98ea7e389924e8f7f6f1faad187a4eddfd5696398c01cd1c1e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPKI02311500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2859ad7bd26f85f0a4aec203825734a0dbc2c64c699592b53fd9f51328ad64. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6P42429476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034a0247ff2bec9ca0d38af885e62749095a376306ee23d24deacf6430037b4b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6N22574309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b984ce138f6ef4625fb1d3231fca5e2a9310f188e805abf7331222557d28280. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6P42592095.