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 0xefef779b11c1120138b1372607ff43e45b661f71bdfcf3ebbab6d900b70bce18. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/182beffd-84f3-4022-83d7-0b39d5fdbb57.json and https://artists.proofprofile.net/proofs/artist/182beffd-84f3-4022-83d7-0b39d5fdbb57.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 0xb0643decfe1167451e739cf8dff8988c96a2a2d8cd4f57fbc6726a8ad3ebdf12. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:46:02Z), 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/QM24S2106621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1800f2fc7ef56986ecc604bf23f82976a6a86b48a2d1f60a779cb96518526f86. 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/QM24S2106712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5b992ae71305cb518b6ba5242dec02d90c3b929ed7867cdad2c10d9fa5287c. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM6N22282758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c2401a6fb4916ad46e92093e38b7f3151710b7974b3b02ac46a9746e65d1d5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM6P42223527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462f3b70ed970d4ad1335d49a5b40b61e83834496a9e4745c751402ff5706f08. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/QM4TX2352390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7183c5b5bd6984815e012d26fa56d21b1f9ddcb5ff1ad73fc4c97a0f070d6720. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM6P42367890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2a33235dcefb2367534d3e6aee7c46131c3c848b71e064195e8053f8033277. 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/QMBZ92353803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d08d060a9fe8d28e9c688d702b2c5c4974aee8fd01365715bd8b805a67c9009. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:22Z), 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/QM4TW2401355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d52e7f6f49958118fc7d667f26bd8de1940f0efbc677fc2271d24f346bf2f95. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:02Z), 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/QM6P42431245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60c40b384c9943548fbfb7390dc13c40ee38c62268bc81ff3f2ced1d514349c. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:41Z), 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/QM6P42431246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2175de92f1e059fdcaeff7c9b3b136572eb93a7e7e20aa9b6900cba954de1f1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:49Z), 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/QM6P42431248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cd26410a6d2ed6e9d40d59adeed001af780431ebf272730259e0a2e63aa0ef. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6P42431249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37251cad4bb3800c8348b7c6213fdb4a92e00c05d6421761a046653c70d0ce8d. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM6P42431250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2a33235dcefb2367534d3e6aee7c46131c3c848b71e064195e8053f8033277. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:56:35Z), 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/QMBZ92353803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188f95372e7321be0bffcf39afb26dbbabbe53b16705a8afaa0519d258e8cbcf. 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/USA2P2436436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f8d8056ee19c7730cc50681cd526ea96259eaa0920b3a99b14bd0978d018aa. 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/QM24S2200787.