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 0x3f376d107754551ddbff07d8b090a9c9420ebd8fd093b4b74c4c5203d5c63584. 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/b1a388fe-0c0d-429b-b711-432bd916661f.json and https://artists.proofprofile.net/proofs/artist/b1a388fe-0c0d-429b-b711-432bd916661f.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 0x4d1448808f28eac1245da41e26f3f604b0877d580df1611dee48d2b6f0f04f21. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:06:05Z), 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/FIMPO1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306891f7f396cf77681106bc7fa9c7a55ce7f1bed25c36c39035eefcc2581695. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/FIMPO1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2536d64e915a2295b3b2e1157a7a362e18db05de2613a697dc8c60ca2d9afb5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:52:53Z), 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/FIMPO1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6c450ca06dfa6eeeb80cbc27de11d87e0227dc4145cde50b88b387c456d08f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FIMPO1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39faf4a591a002baa64e12698880b3855c05147444073ff4a70aa95e949cc012. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FIMPO1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97295075e3ffa7e9ffa471517b470da8794fc1904571d2d0c307f9110675e54a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FIMPO1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c284c2ee3d54c9f1a99daeac53b3402a2ce733870936c07bcb6a2502c7f0a67. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FIMPO1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca950315e14e117aebe687168cfab79d864f931daaec9f7c3584ebd92266be52. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:34:04Z), 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/FIMPO1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779520efee87399ba3e1ae94ecad01361d81f4a54d040080c9ea2613bd90a9c8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FIMPO1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f1fcbda22157bf4478f8da988b7433a08468d782ecadae009547ebc2cacadc. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FIMPO1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe2098feca352bf7ece095c8b9b699831b52d36c829820da41e2db8a5f417d5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:23Z), 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/FIMPO1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91d6a1b9994f03a69339946083b7d831253a219cbfffcf2a76fc34385791912. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FIMPO1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a3e5e337f188c07aa385321d507a21fac3f8d13ba78dc0ac89ab7d24af44ba. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIMPO1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6fa8bc802a9858774d7e93e62988df71785685d95cce9a66df40f9f317acaf. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FIMPO1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e34d4d1eb76a5c91a3fe3773dcd6e99c0859a7a95e0a2e9a047cba2e7d268a. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:05Z), 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/FIMPO1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8f62064238a22f70934c0f68a7b88fdc73394883d9f7452a00bc6ee279427b. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FIMPO1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145cd2e7df705d9b84eaec2b79642b0cec06ff2b9c6be161d12d173af657b3ee. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:54:03Z), 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/FIMPO1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97ec7e8ef4eb592eb4b7acd7fa3a39b74f915f7fa679330df77edb1b391c867. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FIMPO2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d11c84de796ebb4eabf4092a8b04aafef7fd41bab85737039e50cc6612d7764. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FIMPO2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69da9dc7b599cf45d8ef37a4d58ca348ff4d9bbfcbe0761b2656f310a1e767c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/FIMPO2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8801d1b9a97e7fad2d13a4593811748c6093d03fd5e45f35329315e45764b8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIMPO2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb39ca869dab879c38be5b912c47c6f86887debd1cfaa4ddbac3e5eeaefd870. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:52:05Z), 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/FIMPO2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42dd87c5b92ff804788650e0a1d0fbfb3f428dca3561ab9d1bab1fa4bbc01be. 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/FIMPO2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb256ed1ebadb5c3ffcad62c5af8f245d050a5223599553e95cdc651610b8ea5f. 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/FIMPO2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103af00ab39430faad93df8d4020693421267e1b80b0557dac4bc24e4da10f97. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FIMPO2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7700cced983342c6d8a58f13c6dce5b12ef61dc02750d748877d3642a742c2c. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:35:52Z), 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/FIMPO2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1871e84659572567a9c36290ec4b5d89737bac0751b4882b459187f9119272. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:48Z), 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/FIMPO2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910c2375df0a1e192cc7b0964ebc764c292684b39fd549b3ec95ba7eeab88f5b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FIMPO2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe2098feca352bf7ece095c8b9b699831b52d36c829820da41e2db8a5f417d5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FIMPO1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150a1d7a89ca982063892f84bbe2a62d28e44c66dae60c742cfe788114413da4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FIMPO2500001.