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 0x3c7b6e24e4e54e5ef429e51e2ff62d7a7e88eb1c89f54b8eb3ce598491d3962a. 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/bbdd5378-ff20-42e3-8308-0439c3a73672.json and https://artists.proofprofile.net/proofs/artist/bbdd5378-ff20-42e3-8308-0439c3a73672.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 0xf53d0d18d578cacd6fb98bddbea960c43f7288b0fea38052ad21b4611c086e3d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:12Z), 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/DGA0M2401946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2684efdf2c0a46853f8ec4f30a220b973e144691b4f80420135e7889ad31ca33. 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/DGA092475309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c3110f38b1192d054dab5d0d3f56fe17da8374d14d624854cf85c3a199d531. 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/DGA0Q2427441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb408cedada1f08a3c98b6f62bc961e932739775446f9bd7b16c9c30ccb21362. 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/FRX872514093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e588d334060ede290a3a13503ab5058997a093e6105b59ab98158ecb8d8f69. 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/FR96X2531899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb2051d304648cd26abc7a52472aa1006a35a0368904430ec9e35ec74075b6c. 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/DGA0T2404784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d95f89601f1b37914091e1765a6694ea78b56a5e80dfe4c635bf8038606a109. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0R2422519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dd228423e351582ecb22896f317c2ca84f58f7aeb087d95b197a81ea262e1b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR10S2578469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554066716b27068ae03b9fd6e768e4bf00c54acbc94372bb8da79fe79b5c8ebe. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA0T2405735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf529d7dc5c8a4d631b572e5459e3fb1962c3c7dcb25c1166f86cba3dde253d34. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR96X2535573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2109e88581f4d67d5ed408a9c776e8daea15387f567100e05a333dcb53956f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:52Z), 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/FR59R2583024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b8e65a8e7e6ec95557292fc0133e8e7feb05d8e6c4a6ae257c1db5c3a4e939. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FRX452598681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a3fdf318cb4a29ce82d40ca5a6a5a6b060d1e1a10d91d6c8e59aabaddf76e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:00Z), 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/FRX452502895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27aa6cc5dc62669a89c81e4a21056b35e5a385e0f314a7ffa73dc79718bf6913. 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/FRX762579512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b62e1ec38c6d91e7128fc1febb7118650cfd75a59a014d1f7c193f178aceff5. 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/QZZ792504707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6744204035a949112ed883e610677aa40fca6fb05d7b1cd89df167384d6a84a. 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/QZZ792504688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d754fbb79709b25a8294c5a70960589b60a9878d914f4fd57c9395c97539bd. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:12:50Z), 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/QZZ7K2566554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8f5b1fda10be09fcf4840194b607a0078dc76d64639c68fdbc052770f525ef. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX872583220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0515a12e7c352db1c583528530bb38ea0a88da7552e4b64986739a0a1d5883. 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/DGA082439450.