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 0xa3b39fc5bff22121b79498b46c60a8f61e7f9b405da02d51d526870fbcd6152c. 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/b273ed27-fe88-4c5a-ae6b-eb0f34d1a84e.json and https://artists.proofprofile.net/proofs/artist/b273ed27-fe88-4c5a-ae6b-eb0f34d1a84e.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 0xb074d1597a541881dd5d07d6c43af5d7f452008bdd7ce5356844f97ac52bddc9. 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/AEA750800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73134c5c6915ee28777c5c1291eed504101c15b89a1ad86b6fbb5507f904d97. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/LBA081106641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02399a1d8173195c03e9bc97de800bc9a397e36759fde8418bb69c8896124383. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:09Z), 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/LBA081106643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4661953f848c0230e71f32e7c9b7e4848aa5834affae1372f48fc818c7a03c0. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/LBA081106640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e835ec0ff8e1c395043d2e77f70e6c15cf13befad0bd8db9a819a4b15926fc. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/AEA141301505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5996c1949aa62d05f97197d980f43e73d048165f0b327f9fb50ca32a28eee775. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AEA141302891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2ae2452bc31d818b770dd24b7205a12629806692ea2f232c85e09488cd34a8. 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/LBA081121510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83381ced363471c772aecd0b82ba736bbe4920f6497a2cf003850fda9f345c22. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/LBA081121503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943186b065729cf48d1f0bef13909d218abde8a2896a19fbf23a4274c185ad8. 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/LBA081121505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2ae2452bc31d818b770dd24b7205a12629806692ea2f232c85e09488cd34a8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:28:26Z), 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/LBA081121510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943186b065729cf48d1f0bef13909d218abde8a2896a19fbf23a4274c185ad8. 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/LBA081121505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5a404e7c788a9c9ea5eba1eae8be72c6f86d96905d318afa759d73655fe837. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/AEA141500358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1714be83edf972c2909b048b679fa19ded3c08d65a8cf777d1e15fd9f85373e4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AEA141602961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecf8ba17d55eb28bc439278d393a788100dfbdffc2c2e3b9d62aef4374b7e69. 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/LBA081122435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecf8ba17d55eb28bc439278d393a788100dfbdffc2c2e3b9d62aef4374b7e69. 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/LBA081122435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e8e3925d0ac5da5d76afef74b7b50bdcb0b896ae029a188582d7b1bd2bca9. 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/LBA081122606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb718207dab001b2b640cde39e8a9f9b528c25dd1366de9accb40df0c04929773. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/LBA081122609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e8e3925d0ac5da5d76afef74b7b50bdcb0b896ae029a188582d7b1bd2bca9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:05:53Z), 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/LBA081122606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e512bd3db261d0f8ce50ee70c426eed860cd63384b002c7fd83074683d491ef. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/AEA142007206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505654b82bb67fa76794857d312835afc24c02fc96fe92eff47a3bbcd10a3b09. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AEA142100964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f59767fd05c069eb4bff1eb855cc654a0452db7075649c60cb8fbbf9b3461. 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/AEA142212529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc98da1240167d8966f64a7f832e187da48e5ec75f64fa1af2a131f189a2b85. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AEA142401962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bb5aa8f2dc76878253f52b20e743f88d6f24c3d4d717ea6f94149eb0e604b7. 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/LBA082501273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd710954de87af3f1398c1e08707bee9d3e8281b477d64dcea579410dc8366466. 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/LBA082501274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd27f7776d833b5923067334bb3e586a52f8a67bc51a1ec037077dccf91b22e. 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/LBA082501275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934376c286140bdeb31ac222203b2606147e077489e5565d990f1605623a1428. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:34:57Z), 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/LBA082501276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dac7f6fc0ceb9c13d619044f61f30cd1f1e38e75d0e04c215f674a968c497e4. 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/LBA082501297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb5785e5c61d032f479593b5ba8f45671cf6e1788610711bf04ec6d7811bfc6. 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/LBA082501638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b3f505d1b50df584e77652a47ba46e296a83d975eab64897e31bfc1dbb6c2e. 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/AEA141801977.