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 0x0322559f0ea4da851a042f84c3150ab8d0c13349a175e4f25dcb34adc0d896c0. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d07efc77-73b3-42c0-9f17-f24bf204d27f.json and https://artists.proofprofile.net/proofs/artist/d07efc77-73b3-42c0-9f17-f24bf204d27f.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 0xd7b9ab054154e8ee3bfb27662f69788ae64b2cb4f3da0ef6426ad9e9481d017c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ5AB2397956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe8ecf4c00dd70da81731881e5191f4b522d06d928c2e804c61d5769fd2ed14. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5AB2397957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8aa2d86fe7ff96e9110a3bb047d79b641729b4e3e1c770d4f8d203ef739fe3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ5AB2397959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3d719cc4a6d9af85a9b74e647ef811dda80674c308e617bb74507089c7b96c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5AB2397960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cb1ec9e8a18cc3c8cf496dd463ca600bd0595be5011e297bc750a32a88fdd0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5AB2397963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6bb798370687683340c083a2a33a24906c273ef925eb79a99082cabb323bb0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ5AB2397964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2155b3cf2dc6c711ee5a1d4e0fab526fbb0bb8dd8a8a1660930b3cd76867d27. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T16:15:34Z), 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/QZ5AB2397967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa06d499d19da2c809821fc9483068ebf0c4a6554bf9c19de0ddba8d368c5dd9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:34:43Z), 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/QZ5AB2397968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88106097ce727d5db48b65dd64eff277aaa04e50507a6a531830811919b86c7b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRCQE2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dff66439b18307e77e3deb4eed4db16a9775793c814bcb471b628201dcbae5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRCQE2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1319c267ac1350e92abb4fcec8aca50c6d30540056fede66d177ca3c3d5ca82c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRCQE2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beddd0ca1e3e3c0e95663a9f26ee736ff06f02e268056deb5d83671498bf0bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRCQE2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeacb97333b6054e0068504c415697679fd67e473d67bd094dee69fa305864c. 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/BRCQE2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02776c6155267bf79e06094b742bfb5edcf5e3392b3218174f8b357d97c64f6. 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/BRCQE2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88106097ce727d5db48b65dd64eff277aaa04e50507a6a531830811919b86c7b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRCQE2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb52cf340d4184327bb5084f98526a04c9ce296c3fd9f4cd829951b05b31823. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T18:42:34Z), 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/BRCQE2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d74b8bb726cca3342eb604fc24cc8c577e866c435c67eeb75e59b36c585481f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRCQE2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a724a63c2d773db4af3a8e60b9d168f3b5576d109c97f98b041849d6c65208. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/BRCQE2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1953fb0fbebfd09c999df278bf2812550a9b9009acda5386d228d3c57eace21f. 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/BRCQE2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ed9d5165ebb8e9d747c7ea11009980caf0bdcb856141d15c7d8e8395c222f1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRCQE2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890f979b69ef74cf9cd80636ac9c63898435b12492a73da32e36b2679f25d9c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRCQE2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5dbd64f61f9cb92b97ba74ac1a2d0b5e6249ee4935c701afb2141f99e1ddfe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRCQE2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2942803f554aab3c448805f20cab98f5ec378f5e9d397f4261ecc4e3868afc93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRCQE2200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc974ff8e4f450c61d822f262b1f681fcd138482e318edc785b54de3ea4516a7a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRCQE2200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f91129e9b6e55ef668d5712554f1365ff5b7c49facaf8a90e60ad5071a6d87a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZNJW2270946.