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 0xf195f5c3c6e8f210f7f8c15b5ddf0cfa974ace8ddafaa287f6e4a78a1256f591. 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/50f436ac-82b6-45a4-b2e8-6dc0643189e9.json and https://artists.proofprofile.net/proofs/artist/50f436ac-82b6-45a4-b2e8-6dc0643189e9.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 0x2630c382b67fae87f49decb842f01b62eb67abda48682530c72575745fbbf07c. 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/QZES82488220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f551d851437023e5048fb8f817fb7a31957b37ba1a179a90d9ae32db0a8227. 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/QZES82402794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a6b66c92d544c9897913c25bd928d2bfee35bebd896dd644a15c763868ea8d. 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/QZTBA2329797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3e9f898c374742e6e6995606fbd473800196e0a15642a63d21ba58fe58c96c. 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/QZK6G2347017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e491db2754a142749d8175e34bc053a6bcdc3107e21654cab908ba8f0e8ffc. 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/QZK6Q2377078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a6e44f8e27e9075a9e37412352155872aa988aaada7ae98d57f80b6a51305c. 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/QZES82488223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77f3f6c7193d8466e3a807eda4b217ebfc5a4aef7945e33b3305c0555c2f6d0. 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/QZES82488225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2037a299980e45e3e8cebf70e664a127612708e8663ed415a4cf2c1e1b3c0fe. 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/QZRP42203180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497add48d0b0f2bf3473cfe127341ae45acbb10ec5a3259541a0d4facf2f5932. 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/QZNWW2293709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a34c37446955aaab686588f317f9306125e36fae29dd812c7aa328a62a9344. 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/QZRP42100843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31823b627505f737db97c2712ae0477cde741706cd84d70ea2523eb4c85e1e89. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZRP42203183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc051768b63deb0976cf2673bde90966d018a69b1a734fc6428d3c1783d32bf. 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/QZRP42203184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633f8d19f27ce3ba12439a4a4bcc85a3174c337c70a2f5532f17784d5fdc1c30. 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/QZNWT2476001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524e0aceadb0b7b80cb261c4cb5e5ffd6ff1f2cd533e8f936be5e23e434ec66f. 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/QZNWT2476002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f551d851437023e5048fb8f817fb7a31957b37ba1a179a90d9ae32db0a8227. 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/QZES82402794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a6b66c92d544c9897913c25bd928d2bfee35bebd896dd644a15c763868ea8d. 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/QZTBA2329797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3e9f898c374742e6e6995606fbd473800196e0a15642a63d21ba58fe58c96c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6G2347017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e491db2754a142749d8175e34bc053a6bcdc3107e21654cab908ba8f0e8ffc. 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/QZK6Q2377078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e491db2754a142749d8175e34bc053a6bcdc3107e21654cab908ba8f0e8ffc. 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/QZK6Q2377078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1391ddc3ca85e96adc61315c8b3d546bb22ee18b9945b211d039f7d1a230e3. 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/QZDA72332638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b686a1bb1af71c516ca2207a11337702d8f0e90fe2e44941de196488da6a9d1. 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/QZDA72332639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497add48d0b0f2bf3473cfe127341ae45acbb10ec5a3259541a0d4facf2f5932. 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/QZNWW2293709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc1cab61438534dedf4feb90f83f8b5eb91e77aa5fd3b3cd07b19d5270e2151. 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/QZK6F2254291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a34c37446955aaab686588f317f9306125e36fae29dd812c7aa328a62a9344. 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/QZRP42100843.