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 0x0e84ac741977b1864bbab1b2ee0cf4e9759e4907347592c7403a831f9adef1ca. 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/db005186-25d0-49ec-a2a9-3ffdef30dfe6.json and https://artists.proofprofile.net/proofs/artist/db005186-25d0-49ec-a2a9-3ffdef30dfe6.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 0x4c20abeafeea1f5985f9636117401edd36f2c68c2f4d8bd66c7f9a5f754c75e3. 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/USZXT2352327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0092a96acbb9681d6f679ee75703fcc8cc65ccb43fcaf17f1e6d5517e8f0be. 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/CH7812415364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba3aafd4000d43058f4fc3ff38127ce3bcafb230ad9f915631999d4989e1be8. 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/CH7812413473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d587cc90991e6f97fc3dd6f44df90cec3a0bf8a4a8a3756f4104f021fdf9bb. 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/CH7812411925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06be59c1296c5519ca6a65ae4326664cd56b717831adbf1912531327281812f. 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/CH7812409945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c09a69837bbbbac25130719682d597ab22ef6c2f154a10e29aaf639ee1c56a. 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/CH7812407683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f1edd21e65198ec581da9da62e6ffbd6188db16f67252f245d32183b1e3cb0. 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/CH7812367954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3901652ab3f26ec84a4c063808350f752ea650312c250c489be8229441f412. 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/CH7812364476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b93ccf0f76f0914673daa8a53ddd7c35ed99a2c43e1ffdb4371c4a112f706f. 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/CH7812355647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3901652ab3f26ec84a4c063808350f752ea650312c250c489be8229441f412. 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/CH7812364476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b93ccf0f76f0914673daa8a53ddd7c35ed99a2c43e1ffdb4371c4a112f706f. 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/CH7812355647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c89d203863cfb06892a486a040fc8549245eb72ba9aa9b338d2bc2763707a9d. 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/DEE862300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d21a90d9cb9ac465ed26a300ab794e4d72eab70fdfc1b64ad9be600b9e75db1. 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/DEE862201295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a6c285745ebcbc90715108b79efb5407e937c591ca535b2e4fba3c6147e488. 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/DEE862200904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541b57b66588ae9f0dea8ea2095d3a7027c4804e0d82596cde4ae3fbbd3abae4. 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/DEE862200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01badad5da7fe3723490f121d5d092dd1aefb19bf9bca0413e256101ad7c26a2. 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/DEE862200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc92c0597ace96f23545d26fabec422e132256cd5422132d495cf7456702e603. 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/DEE862102021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbee6cf3a12fe6c89bef8609c82baa2e208a38fd952ce85e97cb3e0823e9b74. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWQ2112777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43263493a6449abd8e5d07db87fba52d72ac01263dae5ddcd40b885deb1c1e2. 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/QZDA72163722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87d6494bb1b9dec32b401617db36582fd0e04ccd83776269f39d0a1d612d3ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ72108960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea414fa309fc80de2fb0a647bcef2d421abe930ab3679959c9d12ff427f5664. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYX2198418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b8df048a0e822003520af9eae1f32a8ff3505e9e59c571495a0b239979db09. 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/QZK6N2112204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49391e8a893f281904425bf47f38170860f8ad3768a20ff2b4d3de36a789d036. 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/DEZC62254103.