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 0xb7173f9548ea420b61d09e4b5a8029bdad3cee882b12cbe5e5165e66021783cd. 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/f06c4ceb-9793-4dea-9d72-9a7674cb1bbd.json and https://artists.proofprofile.net/proofs/artist/f06c4ceb-9793-4dea-9d72-9a7674cb1bbd.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 0x8882920f864d92ebdc8f62832252393ebf36ee5fef991c0a7e6246d417437813. 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/QZWDE2382033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb48b52da81b8d1de8634e7eb055a5658af0563104f7cd4be76f4a3f8398f4a. 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/QZTRX2444010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734ad8276f632090675f410d29f8de1dfc8d9844ef129b2210ec212210167d03. 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/GBWUL2499159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08b04850c3a39887de53c2af298fa8e5787594d1fc7644acf60d469ce864a55. 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/GBWUL2487469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faa8eee36d1b5da484f24eab5a239336c4e2e7f539ea6cd5a39b8b0f6d92f69. 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/GBRKQ2452259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc985468528a333085c00effae58d32fad8dbe31a57f1f744a6d090e6853a48. 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/USLZJ2448794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef41d3192bd4d1dab5325410e69d3d8a6e72f112093ba475d505eb91d203615. 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/QZZEB2384829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e2b7684dd33559e61b1523b609c29143d2ed8ae8ee52f1c4a7a8a323734028. 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/QZZ8A2348536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307790388c29e74ce7652cf78c90985c0553008ed294bb985f207e49e38dee44. 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/QZWV32352295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a2b99f257d74451033280d352a3035279db99e65c61e33cdc7ca49a6a49597. 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/QZWV32325247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acb8919be5c7c6264d7f47dd95864d97671a116bf9c7e75492e8e5fad26b2a3. 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/QZWDE2344276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0102fa498f6471673ed1bfbe52b6acc7ab2379a8de1e703c55086db12a4fa18. 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/QZWDE2365871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88360097d70a63fea569e5267f84460d18d81114ced8fa86bd42f74bf77faa40. 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/QZWDE2325494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a6c78fcab11c4a72be3c39c6295853be9622bc25b3963dbba3177e6f01d4ef. 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/QZWDD2355135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe436f9ef20c5e34d779f103439d952040a8eedd0fb6b40ab569492511f1641e4. 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/QZTV32395693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913aabf2ee8260594c2aae35195c89321e2b55d723118fb51296df97029e072e. 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/QZWDD2363521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c1627c624aa34de19c3fee16be58772a63a6317d497d425b129d4cf02e648f. 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/QZTV32395245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316d15aadf8cfa8c30b4b049bf29828d3f6e7548c7fe49ccbbf32030ea152fd1. 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/QZWDD2322401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10db8633508912afcc29b805c7335eb10708429b983876eada6893642f120abd. 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/QZTV32393438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df3dc846b4448016d1445c90b0fa0088caeff64bf65a4fd814880f95858d22a. 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/QZTV32389185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9207317179bdcf0436ce0fedf543afed4f90019da184854f8323ae5cc565b8ea. 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/QZTV32366699.