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 0xc7203602e54e1afe8a4fc6b59912f30d85b0762ab7aa8f1b52aeaf7aab6d6904. 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/2f1fa43d-a71d-45d9-af1e-038d782e500b.json and https://artists.proofprofile.net/proofs/artist/2f1fa43d-a71d-45d9-af1e-038d782e500b.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 0x3bc861f9939b45035c64fc941b399ce2f694f3a3d8093e87378770fb4aab43b4. 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/QZK6Q2282788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87b6b3a38215b72cf05cb50fe5a236b4baded02d53d5050d263224d887ffa6a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMEN2186469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c2b3afe02b5e01e27377e57ba2776bbf01c993ec70ce32fd93d5032300e499. 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/QZFYZ2252888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a362ec4a5d35d3830a88642635b25be063301d2c0658e60fb1fc15a2208fd8. 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/QZDA62215072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f5fb2959cf3a5f44434fe8a44777510a8c32350a75a6a1fddb3e908cf4d521. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN52212482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856060e4cbbae6ef17f8b9b841dbbe57b19d51867e907597bdfe9cbcc72cd8a5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6Q2282789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a5c65faa804436b0956c6d62af1f5949d5d1d54fd3de839de5e00a367075c8. 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/QZK6Q2282791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be7364057ce150c07f1c07a78f54eb21619dd4eb5d68c8846a32bb0ec4e66be. 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/QZGWW2127661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2857339f163524b63da0f98e570d6c810941bbc560d3ba66848cb38749179f2e. 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/QZGWW2095327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5238142b1ab217b023c8b156cc51c4ea3f169b19247f7c3da1da29ae426a22a7. 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/QZGWX2018040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5a37c71e221b2aa14aff1ae8e864dd1bd89d181c9a38cdf9a70d4637421e53. 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/QZGWX2018042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b3c911d45ebdf7b7855a464092de8d8be255f13c79b223de08d0f1b1dc525. 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/QZGWW2058098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f71a1207d8f0a8b961c7ce6b0b65d5bb8f56189df9cb3f0b3c56c7c30a84198. 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/QZGWX2018043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbd0c03a79d2308e10005e1edcb025c631e59b761f4a9cb33ea449914c6e2c9. 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/QZGWX2018044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f8e17640d4bcca94005aa813eeeedd5570aa7c5402e67cdb26fae256d358e9. 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/QZGWW1906717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2493138ca7f5620309d46c0c5bd3a970c96c4c970aaa62443870f5a845af8941. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZ22B2017681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d1b758e032db3889f4509b1dba4af1e9ecadd4a261d6cb82fd43e25b96edc. 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/QZ22B1943934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450158b99e763089ffb4ddda829a891322c6bac21d9ecdd39e4e76838fb1e9c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ22B1847377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c11059e8596752d7c7e4349fe16233ae6ab82603dec6ed03bc49718727c3a2. 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/QZ22B1823250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf935bca159356cae0e9490cbe560b3cc40197878986f4baea6be157d6d73a047. 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/QZ22B1808734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f42bc1ba95897e01531fb448c4e6badb0a374b02149e75fb2753c79f859fb5d. 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/QZ22B1791452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e619b4a4e59224c891ca3c317beabbcff7fb0b573385b79815dbe94999759. 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/QZ22B1758405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da2a5d8c4107f67d2398eed55a1a6c0ec1b0d6a1673a879b749e83e03c67823. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ22B1753923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2692ccc02fc30c3ee3e6143d867bc87d3933e1b929f228c3c7e0f80a98fdc607. 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/FINEI2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe68db5ef5fc95f45b6f4e5514153ad5ec1c393273fb8327b065f6657ace3cd. 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/QZFZ72330954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f5fb2959cf3a5f44434fe8a44777510a8c32350a75a6a1fddb3e908cf4d521. 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/QZHN52212482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a362ec4a5d35d3830a88642635b25be063301d2c0658e60fb1fc15a2208fd8. 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/QZDA62215072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87b6b3a38215b72cf05cb50fe5a236b4baded02d53d5050d263224d887ffa6a. 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/QZMEN2186469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512c8ed3dc098e5050d01a3c9ad31e548bf19dae5d033155189bb79069d83e22. 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/QZFZ22150847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2857339f163524b63da0f98e570d6c810941bbc560d3ba66848cb38749179f2e. 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/QZGWW2095327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b3c911d45ebdf7b7855a464092de8d8be255f13c79b223de08d0f1b1dc525. 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/QZGWW2058098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fc44996f9d6fc79189fe37f857818b153b1bbf687636ba7013999cef405ea9. 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/QZGWW1960741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d1b758e032db3889f4509b1dba4af1e9ecadd4a261d6cb82fd43e25b96edc. 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/QZ22B1943934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51779aab96ece08236446a3d5ce35f0276730a59cd7910b2cd32521c4344f9b. 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/QZ22B1976124.