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 0x86c4b5e956030204aa13369ce6d8230ad50c89896d1c56b35bcafee8b08cc362. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e936751-a1e5-468b-90d6-0d971ce9a9dc.json and https://artists.proofprofile.net/proofs/artist/8e936751-a1e5-468b-90d6-0d971ce9a9dc.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 0x4f563bdec12f48d8614ae07908b52736f7587bc9e00fdec9343349319096597f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:29Z), 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/QZFYY2284651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e80f19c2368b2baf7f7abcabe09fca9fe0753f393e1240c6697e84857a9927. 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/QZK6P2266513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f62407ef3eb99948cd873f773396876a4a64be10a48ff35052ec46c6c7301d7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB32241742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeda9f02a63669041111ab09e4d969a8067ae8da0a1ef91376127f9e6ff15450. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZFYX2351201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f7d5f74d60359f00815f3d74bc50aeeaa7bdd540d65e6f3763408ae376ba4d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFYZ2311519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc28f0533d8fb168f179eb643b37a56cafb7dc5c4a2fb8b7f9ba6b6356d4d06. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZFZ32361204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ccb5b134b859b24e1db9a2484fff7a37b2f8ec08b3801a242d2a4e0d9934fc. 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/QZFZ42310838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8f082a7373816fb6b7dab54733c9c299ddae7a5b187db55f3a583d412d7259. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWS2302405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591e4466769421878e4888c27106c89b03f643ac1d3746558d3c52058cbcdbc6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWW2311232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8636746d28d180a3d7e52b5d980da241c493f59d14ebf30197128327e7c34af. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZK6G2411603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b032e45c5724b2a94c266866e097641865e93ac770df7249490cc9b104bad1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFN2557242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336737b3e07e2b763068e93bee8e1a084711345c88e9e58725129c978ea18439. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFP2583517.
Summer Of Carnivals, Vol. 1 (Presented by Int'l Stephen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835f8bcd8a71ebcf998c7f6f813a41867c915d308529a6c0b0306fa43be47173. 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/QZRP42428192.