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 0x74691cd8f1ab7ecb457de7ece5a45499a60e2e2fdead4f2de8207d3b758f3b32. 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/5e138d42-385f-47a7-ba09-32afc6fa7f39.json and https://artists.proofprofile.net/proofs/artist/5e138d42-385f-47a7-ba09-32afc6fa7f39.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 0xffda6a2f517f76e02c24d12adba5b5d0217a985d81c69f86c86ae87bbee29fce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPI802300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cdaae4c5f603dda68c70fb0060885b503904f285b516f5e5aeeff16e54f4e7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI802300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2f5a43fa218f7ffe743c08b9f369804b0ba8377798dce944321e5b2265783. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPI802300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a85e5cf53087a3bb25f7ff05632a5d16666e9f80bdc2f9d821f83fcfded25b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPI802300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb19e2473cf873cf4c8b5f2dd7c79d66b5eaa19389d1bfa142f744bc4c55d6c. 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/JPI802300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88d8025656cd24ee43f4180318210c56c540f000f92fb8be42359b0e3e035e2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPI802300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b5ad4e9cd94d7eb2996e28a172a2db726b589688b29149a8b7e83c3ef0bc76. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPI802300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffda6a2f517f76e02c24d12adba5b5d0217a985d81c69f86c86ae87bbee29fce. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:56:52Z), 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/JPI802300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cdaae4c5f603dda68c70fb0060885b503904f285b516f5e5aeeff16e54f4e7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPI802300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2f5a43fa218f7ffe743c08b9f369804b0ba8377798dce944321e5b2265783. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPI802300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a85e5cf53087a3bb25f7ff05632a5d16666e9f80bdc2f9d821f83fcfded25b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPI802300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88d8025656cd24ee43f4180318210c56c540f000f92fb8be42359b0e3e035e2. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPI802300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b5ad4e9cd94d7eb2996e28a172a2db726b589688b29149a8b7e83c3ef0bc76. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI802300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f20819df03ec036b12ad92a71817bc3cd2f63d62a9ae81f2d1319d6ff31149. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:48:49Z), 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/JPI802300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4e38125dd5d8a1d6eaad745420487b074142d5f05078f16bac40d55bd2ad7f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPI802300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c4afeb73a91799436df507de34d5f4a7a24137f79e45ce04c2d0ae34287923. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:24:30Z), 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/JPI802400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb817ca0bc15623970d07816cc6c28afd757cb18a8fd92e17389e7df1afc3c224. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPI802400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c7c24b5963ba2201d95b0fc0fa93999a5ec6cab3c31dea61eeef9f447e0880. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPI802400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe708082085c9a1675d8f42a1bbffc3851950d4c5efab797430bdf628f15f89d0. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:33Z), 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/JPI802400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01a17c30eef669d4dd64f13b71ad6c9ad855d8d9f6debac171fe7c88f887dd2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPI802400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b8ee0c2c5176487983aa020940e2b8551f4ac192c8d7ff4759ce68612cfd06. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPI802400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a162da3c966d16723298cb98a48f64cc0ae8cddb12c1a60726ea4705bc40b6b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:24Z), 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/JPI802400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb817ca0bc15623970d07816cc6c28afd757cb18a8fd92e17389e7df1afc3c224. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:43Z), 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/JPI802400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01a17c30eef669d4dd64f13b71ad6c9ad855d8d9f6debac171fe7c88f887dd2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:46Z), 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/JPI802400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b619b4dfd0d0e6695281df114358115d402ded512361d5df0ea1b3f5d8388e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPI802500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b619b4dfd0d0e6695281df114358115d402ded512361d5df0ea1b3f5d8388e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPI802500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5971f925f880e3c8eb0512b86b96a48423974eaa984facbba720c3396f6e7915. 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/JPI802500096.