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 0xfee0a9e25c7ed18ea00b2be170e491db4495d536eabce12b828df6303e5b0941. 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/ad0b422b-ac06-44d2-bd2c-b1f5fd0e880c.json and https://artists.proofprofile.net/proofs/artist/ad0b422b-ac06-44d2-bd2c-b1f5fd0e880c.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 0xdf54d603d33d47aa355f8bf04779e627dc74ae58436b5511d25ed41b57a4ee42. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/US25X1088056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fad3d5382f2e010350d1e9621871a8e5ce6d44fbd182647b0f4ccab96c4878b. 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/US25X1088058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f954a72ed0a5045176b3d26c07d3d6b5e92f87051043a011a20b4e87e7901a6. 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/US25X1088059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb200f3333de069c876f985d73cb66e4cbb79366d6a3cf5124e7a5c9dfb252734. 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/US25X1088060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eea882839e144eb1d71153c5dcd96fde7d8b7097df61b0375b869dcc760c7a. 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/US25X1088061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f54645bfc7de1a4369a526579fa76556934919ec8555fdf6abc9ef9fc9e3344. 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/US25X1088062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f098b328ac90201e7432e8517a73eb3aeb0670bc40df915e0e347311d48799. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:22Z), 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/US25X1088063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563bf868711eb4e7273981bd0d6ddb0e96826b952f4b5fe7b6ae60c377943dd9. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:33:55Z), 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/US25X1088064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dba3cc363423f91974635ae3dd10124197055d0a6c60ad26ae8fe5723d5a271. 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/US25X1088065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a675591c44d0c46287be34c12fa562e754615560087b63044db6e36ec217dd. 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/US25X1903613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01055fa3132da967c168f74155c2c2deea2217ac05f14d842f48aead0c05aedf. 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/US25X1903615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3fc75f25879fe903d3676272482fa04607a563a4a3579e2038d18f588d3c26. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:00:58Z), 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/US25X1903618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73580f7931800ca8374fed16dbd4ed9fdc02ef49686aa983c1fa552ab5650ba. 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/US25X2005894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb105ccb97e88efac62a8faa5f51a9418902e36ac78099cca2e585a2d39968f. 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/US25X2005899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda338b7e088888c853e62f74e321448f29094531140d412fad0b312462dab1a1. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/US25X2005898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8ef32b5f0fc6f1723eb6765d8c5bac86e74bf318f65cc6597176c631263309. 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/US25X2101996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8ef32b5f0fc6f1723eb6765d8c5bac86e74bf318f65cc6597176c631263309. 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/US25X2101996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591a0ee3ff992fd4c0a1ad0f124b256dda58a2e297ec0190314434dd4da341b3. 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/US25X2301526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861ee121d0797d8e3fa746741da35cbbc0e8de9599910c9e51f339c50d8bbcf1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US25X2301527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d354fd22812d3547e2c85a6dd50b5be5a2f6fd91dcb993b1b6f31a82f1f5aa. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:53:59Z), 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/US25X2301529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd965f40a9289f20b857be46306fe2a5e4812c3bb40a2ed1ccbe5df3973cddd07. 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/US25X2301531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f267dae7c6289784b6621ebabdfe3afb662ed90cb0bf953ed9505fd3f66e0f0. 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/US25X2301532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a1c8b2b51649a6905a7c9cb81ba335fc2e395c31dd41f1dca573f407432b30. 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/US25X2301533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e1a2b8dc6fa993c4827810eadb6d48f32ff0fd3e82641156b8b03d4e5a58a9. 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/US25X2301534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9207b8e0d64c1b88c9b925e12f9894804fc249524dab4962f2fbd5524f8ff3e5. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:23:19Z), 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/QZHN72530551.