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 0x01676c98550ba5b03dbe8bc9dda0aa572272d356a7e488bd2d5569aa2bff4f7b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdb0502f-b502-44ad-b40f-d9ca6b395e50.json and https://artists.proofprofile.net/proofs/artist/cdb0502f-b502-44ad-b40f-d9ca6b395e50.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 0x661369b68911bda49405d48bbc70941398aebf93bed119d00514b0ff8623d5ea. 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/AULI02457890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ad4bf3c77e821074fca2d7aa57ffe6a99508ebee3f198fc17689eb286ccd24. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AULI02457610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e5ebf3b6ffd7431860f2d1afa001e55c0cc6131d425aadb9cf1c22f6e2bac3. 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/AULI02351730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ddb8cbac1833391437c0b050be91949995eac73941e51453e09e017b59ee0a. 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/AULI02354670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0110972682633f88ff722b67ccf974775818327e9adac3f98f4296826773f3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AULI02352270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daf99227b21e7a90c481c77ea63629110e1694bd0550c6dbb1bc61ae2bb4bb9. 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/AULI02354680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daf99227b21e7a90c481c77ea63629110e1694bd0550c6dbb1bc61ae2bb4bb9. 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/AULI02354680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0110972682633f88ff722b67ccf974775818327e9adac3f98f4296826773f3e. 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/AULI02352270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e5ebf3b6ffd7431860f2d1afa001e55c0cc6131d425aadb9cf1c22f6e2bac3. 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/AULI02351730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4e70f5c684c0cf242a0bd3e8e95409a6e9e9f4c7bbf9fa04bef09d3cfe0568. 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/AULI02250430.
Why'd You Only Call Me When You're High?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaa79f7547beca89fab6da797bf6d83eee338efe5a9c3a39020877b5a54d099. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUG12106226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671f0a3327abe144dce6b3ffa4cf76b7f17eadfbd6f1bd5800903bf43ac24e08. 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/AULI02250420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b4d8fc6b539429d849f37791f555bf3f83885d5cab4fe72e16f59a424783ac. 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/AULI02247500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e87855ef26a51a99c8f46b3675f658d7347d873efd6aebb2710fb3cac277ff. 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/AUAB02200948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b4d8fc6b539429d849f37791f555bf3f83885d5cab4fe72e16f59a424783ac. 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/AULI02247500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a30a7fcb47d7612a0442e57082cb67876eb56a4a27c0dfbce70ff84ac628ace. 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/AULI02247350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbedec7d1f20b66e50a0292123ca8d9dca48c525a29e41400a0f89d05b25fb90. 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/AULI02245910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969522b0969a344af2af3097cb4fb21d3f4498aef3b32f66ddb670da1df7f76c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUG12103822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f81f1b61d437eed0f1aac16f04b1c261bc79559e2e5f37c02c0f2cf1d0e7f3. 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/AULI02036000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c84e905f2b04259ed215188ebf20409e7988be60bfa73bd51e2efe6694c20c. 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/AULI02036230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e638c5bd0c7b8ba73052e22cc16d3d8dd41e0f213443fbf4987ea73e53074cc. 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/AULI02139080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabebe07647a51fedc57536fd53b0e6c660c1ceb1d61c5b25386e9bb4810dd470. 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/AULI02034780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3876ab176d3aa5d65364db950869e0f6a55777f1d1a3cfeaff151d8613208f82. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AULI02029590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb65d38bff47bb7b6ffd3249f996d5dda24179efd16d758736cbe591b0a3f78. 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/AULI02033110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3fb6d6c6802f9c6b955a1e123f3030e6f301d09fb6fa36afd3402934dd87c3. 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/AULI02034790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a5137d9164d207f04d87768fcb74beb81c8b127158a3732c37522f9aba46f2. 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/AUBM02200329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71c5f5999b1672bce73e75de81c2eb3e9581b7890ef66d04678163c25b1dcb. 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/AUBM02200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb715837643a321207f63efd3fedc8039b627e2478533d85a50967784a4c500af. 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/AUBM02200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c78117cc338590df178d2504699e1d06d36f36351c751768982cc62d45bcd0c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZANL1712241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbf5a18feda3f4d2c09116fee6112a9f40930a098c815c48779912be5700992. 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/GBUM71903153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b41681da925c42b8bc2d7af758baa5fbba58eb539338d6bee7e7c3ea82dd55d. 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/USUM71708095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d56fb5deed9ae7afbe93bf18d6c3e35194fd5d9aecb8c6915932aac0ab539a. 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/USHR12141957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e0916c69ff409f3fb48010f73d8602c430ee6fae973fe6a1f68ba895e59056. 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/USUG12004277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1f70fcccf60de2d2ea01c5f96a3bf8c7b572a9ea4160875dcc0bccac7e4115. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUM72019978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9818555c759dca6c2600e84a3a4ec61ceed7ed320745fbb081e5bbd6490f334. 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/QZHN92050250.