1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x16cdda970c0671fb655712c9c8384970021dc6ebe9d4f0b5e36f05e6183a19e3. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7f8a701-e889-4ac8-9d58-a4fcc4585c22.json and https://artists.proofprofile.net/proofs/artist/e7f8a701-e889-4ac8-9d58-a4fcc4585c22.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 → block OTSBitcoinBlock must exist at that height 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 0xbce65cb870282fe3dcb2e7a83f1f027506e1fad6b72d60d904561bf60f1ff6de. 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/DEE790311810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0024e8262f626e8e5363574b140b84b5745ddbc4a28c40a437bfefd4b246b5. 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/DEE790311820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114d03dbcb1a0948f8878113672e49374601383a22308e6d25a22fc2edbd20b3. 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/DEE790311880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8699ee37e8faed9d4cadc6dafd0000051cdcdeb63d288409bc90260a00f2d3a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE790412630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b142143160e38a0b6690bb8dcbccc3e6df6e2d2f7238b52210bc0611dcb47c7. 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/DEE791410540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5950b92553a50f29b00d2f7296a5f537b6b6146158b72c02292758ad74dc43ea. 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/DEE791410360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93134f9fb5907ff0ae195b70e991b2e721a5d8ed76321e761df47c8662fa9fc3. 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/DEE791305080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73917824c7ef61c7d1dd7d729af065691741a65e031eaac290dfdae78c43ad2f. 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/DEE790919980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9940b0764a151ced1640cc6a26dd45a436c75f6a1aa942b429da7c6a7ffbad0. 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/DEE790819470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04af673ef21927c7d9632ce745e8f1234b96f98fd9d138e55e1d5f1ee888761f. 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/DEE791504890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bc2c51129e38e79dee263b3652f7fd5e0733ec687692639860f5a8c4625103. 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/DEE790830210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062a325f8b202c7e3d0e64afcea4528f898983aceaad4c2210eab7797d4595d4. 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/DEE791505090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1262aefd8141e6c412a4c90fe0799372c683e8a0c63c7e9be88d4cf86eb1177b. 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/DEE791410610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d3f28b87befd6b3896a1be20490c7c505de3d35dbbdd28e6216e543204214d. 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/DEE791301270.