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 0x73f1b28b7b1434daee2837dcc388a368bdb238b4ca36c6aa95ddc175f8f1b19c. 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/31a54227-34ae-45ad-ac35-fb5624a634e5.json and https://artists.proofprofile.net/proofs/artist/31a54227-34ae-45ad-ac35-fb5624a634e5.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 0xaec625bec324c7d6872251468642d3d61a4c5d61306a1f8b36b85ebb6f617215. 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/QM4TW2184768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32156670951c46b93ab0bb833e2fd4d34c6e19945175492706e691862067c613. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:35:50Z), 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/QM6N22174919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb6f18d4fe173d95bead87be5cab64f6df64f312d3b5d19a865c04247069da2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMF2309949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0da934649238915937dcefcbcb1cfb0046974f13d1699e0d81425591dcc63c0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMF2309950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0899461a570312f5cf84b34e545be1565215023356bcd8d158a9bf5e1aebc9. 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/QMFMF2309954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ad546043e0f1b66575d88fdf6f475b79c58bd242712d5529b7cbe6f15e0b7b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QMFMF2309955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02e4d4591bf7b50cd3ac4fdc245c6f344c5265fe8814961e3e8cbfee2fea174. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QMFMF2309956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31917ae1d616f004579408a3f34f4d29bfd841d0f712ecbc2f3eaa043e217d23. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QMFMF2309957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa709cf523161eb666a318e0c36bb4cd85c9b967c9b390a55a5c28e21a3f1c45f. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QMFMF2309958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88228d94e2ab44279d4edc3e5349aa5e35deb3ccf271f07ad679c653d89daba5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFMF2309959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9067812d0396a23c405da61ab5132e9e4466dcc090c53be4690d4ae56b09995e. 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/QMFMF2309960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6b7d08514ae9ff953994104b15f1f72348b0583e6e4b199a41e31af02f0195. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2309961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac728d6070ada1118de46b08a918810b6b432e4db7f6b5591174d263dac769c7. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QMFMF2309962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0116706f0f712c0ab967ea1c3eef6eeed598c241c8f7637a73746e63bab7a5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFMF2309963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847e8b9fa57dff54eec8aa6e5526ee39d886c211552e15283918d333be04a9fb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFMF2309964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980df720811cd2439b780ae9b2da426eadd728c517e88f010f942b307c87a303. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QMFMF2309965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf445c09eb4835cbb2078e8c143ac1a3d6e74be94f71f1782b90b6782e1c39d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMFMF2309966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfdf8fecbe9f2bf75269fa3bc1f3ebf5efe33ea7b14aab815d058b4db469bfe. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMF2309967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda70ec20112e786ca83adf01e6b2a7f8b9e1e8ecb871528c495892fcdf1c49a1. 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/QMFMF2309968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76486f5252eef974524dc0ecf3164701e5445dc50b35ee8ecc291f92d6bcf377. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:04Z), 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/QMFMF2309969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eff566a842414024e5db31bb58f85145fb0a39e249fca112da3d1f82ae5d05. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QMFMF2309970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23059b8aa8090f5419e66232d33ff6a8f26a74ac6a8cd2152898dd7a82b9b322. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMFMF2309971.