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 0xdefe2f1570374efe6a39c740e4611eb015685ee7b36b903df523274f0b632664. 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/6957c066-4626-4c59-aa2c-8a53874a57d9.json and https://artists.proofprofile.net/proofs/artist/6957c066-4626-4c59-aa2c-8a53874a57d9.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 0x1c773e3fe1744145421354ef379d325f80ea7232cecb706fe0216a9037c3c88d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/IL6652001775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c1965539cfe7c04ad22ee075902cf8202b8e98f39407bd436e5e17d1a41514. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:23:17Z), 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/IL6651800723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe64b2bc701ebd160fa678c40aa49c97e9f0477fd4aba4b4c2c159f1b4f5bbe. 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/IL6652001921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda98d2bc20d8a56aa9b3b6abc807b76132567e3bf82e8d8dfe55a2ac67e61a8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/IL6652002063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73da3648714293a66802572f754b746452183e81c12b692914478a164494f9e8. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/IL6652001920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845ef2b06d3855f4531c90e7f6255fe0e06f52645428931638f1f61508783f5c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:41Z), 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/IL6652305800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea9b4494551e4eedaab17563e88b638741b23da5f78236e1af44943175f0bea. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:21Z), 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/IL6652307660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb206b027f2137fb9a72b4f24fa1a5c0d6075515ab3efd751a904053213fc707b. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:03:28Z), 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/IL6652307661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46c7f0db55a666a3c2ccc96014a01e11753f51ad8c7483ed88477e324d02313. 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/IL6652308469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e0f7a1f0abdde46c7fa32b344b0f4db14a1f0cfc9303c4af4d13ab56e07a0e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL6652411302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8631d052595d6b0cc7ec7859b86ee858ca292fbe8f03cc5511bab72d6b092f1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/IL6652512235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe818f99160e75dcb0e29a34f5effff52e1efe7f4dc08804f5de936ffb74f9ea. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:19Z), 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/IL6652512846.