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 0xdb810499ef1e1687d59b9ad5f325cd5e524cfcfa10b054ac77cd0c7be7d1e61b. 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/aedae33e-217e-40c3-9917-88e8d615ef79.json and https://artists.proofprofile.net/proofs/artist/aedae33e-217e-40c3-9917-88e8d615ef79.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 0x5e3c0156e1e5ac5187fae8d2ec28a7d575f4f874c349d9cb0459a793fd3d6778. 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/ITR442300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c40a7b20a4f90accb104fc6a8d6af9093d286c1bf8741b537f6bdaa184dddd. 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/ITR442300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66836082b3cf9113b5e5cb20df4768de1209d0b1dba3fa60704dc05eada1f9a1. 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/ITR442300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce49d1076f12346b02d8cc33b5c5180b72d6005a60d3309752884794b9c17c57. 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/ITR442300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e52b8d5df8d92c871f5244a48f04a3fd6af6dd0f2c386d9c9a7c4f66bcb7fa6. 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/ITR442300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7a542fd111451d1f748c55d0b3a1706c50b154e12a28896aa861345c580431. 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/ITR442300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661f3e23a5c5354341f85cc049acb8ffb145f0e755ef899740ef1fdbe3c8c727. 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/ITR442300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767283d908b0b78b056bb618f5d6ee75b6f52c56f4f9794f4ef42615e0b3ce7f. 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/ITR442300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa547029eb09bc792c864de7f22ab70e0d5e11673a38932d7a251c3056c0f6186. 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/QMDA62255198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fef7edfc2d0e827167dea11074afee130dc1365743501a4e6ddd203d2907250. 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/QMDA62255200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67de0053d28922e7aa5a8dc40d882bdbe5578a3675f461934ede529174be6968. 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/QMDA62255201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdea61888368a3b2ec98cda6b96ad83c1f4b9243729de808610be16973f4af3. 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/QMDA62255202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd90298474db8d0950574dd3820585a7b47b8ed55491194a15f52086759d82c. 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/QMDA62255203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381a755e11a83d98e4715ed9854300bc968ec476546546fbd21fdbb460a9a030. 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/QMDA62255204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74a6f6538c4a66fca5571e477422d081d38451f165165fff2889d7834851138. 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/ITEDK2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87439712dd01c342ecf07b5b03128fe7186a8694a6e49b2c72678e19f49b6f68. 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/ITEDK2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc98f7a9bb495a5497d4932d12d160f901a43757becd544393a0fd789d7a74e5. 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/ITEDK2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bab43a6b04cee3d5e10a4a71a36be06ede6adbe4c3d75fc55e3dfb7a9ea7c0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITEDK2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18fe3e5f78fb1e5b951eabee1512fcaedc46f123c871b32f89368f68a96aa43. 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/ITEDK2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fbead89bbbc27759311485fb9d44283b67ec104acf1cff93a2455ee6b8adee. 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/ITEDK2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5070fbae5c1d012f781b9e1953586a31a3cba64995edf6805b9bf5b6ce122538. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITK3N2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89afa71a46fab2746e27bdf386338e3880115faba5cbe3b841bf68a407868a7. 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/ITK3N2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a39726fa1507311702a0bb711c827b42d811f2a2144413a90656e22dce5d168. 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/ITK3N2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738339a9d002081e33f3faee707c360a00f5eb5c19dbbfcafeace331092afb29. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITK3N2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee08954e60247d860c115d5e0a424781990d8eb9021761ac294aec7d9155f69c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITK3N2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b8c63ca0ee63e462878b77c11e95eb27c40051252ec237f9fb9f628b385bfb. 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/RUB681900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f08c6b5bb9819335b22b44072b5001edadf61fd7fd969fbdd421c63680493c. 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/RUB681900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5579e2e17316812576bc9359abe5618ff6f1790992bf1b2223aeba01605c40fe. 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/RUB681900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce49d1076f12346b02d8cc33b5c5180b72d6005a60d3309752884794b9c17c57. 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/ITR442300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100539fd96128b880e4ba41270a86f7d0272a38896ed70b0c593e7cb31fc20d6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPM871803401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8104b55129563dc83a5e0ca5cf4541fbeb56231e77fc94a951c10f7d6c34ef. 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/JPM871803404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721e0c0ab53e1a8f8de16fb1906f3c34679b86055144bf7afbdc96fde656c001. 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/JPM871803406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8427e6e480df878095f50f1bad50afd2d443cc8bfee959f51e2c02d02f684004. 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/JPM871803407.
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