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 0xc26ddbdcecf29840ad165ebf103cf9e8bb5bb5118981a0178a050bb33e7a73f9. 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/c7bfca97-3606-42c9-891b-bbb6168c3e79.json and https://artists.proofprofile.net/proofs/artist/c7bfca97-3606-42c9-891b-bbb6168c3e79.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 0x8f10240334015e958716e997b3631ab800509f7fbd49f1e657f0df8d09163840. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/GBZND0927407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f17b7cb1d564ac44ce8e09508cece5567b5df8f8aa451c29544fef92fde4238. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBZND0927413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcda1a3710e4c68a6b3c160a8663a6ff5e38ad45c34808a629430a730600de1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBZND0927805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7025705d337ef4ce855a53af90ef32d52550bed02a232faf581638d5ff757f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBZND0927807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c791751e44adba44d5d3342414580a432ce4fe0044919ad12d5569658237e0. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:09:28Z), 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/GBZND1528607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38c017df8b875dd3e219d0eed0f7ed7737bb451a677063f1c389fccc56c59b0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:05:57Z), 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/GBZND1628701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3bc8248e4e9557a2b5f837b933267d43f2784eb129190936f50b8a8ff4a5c2. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:31:39Z), 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/GBZND1628706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f3b653e67db0dcc292b7f04bd6420f7ca08b0757e77747fb560d3f9b84b8af. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBZND1929115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf489a17092d98babeddcb2789e641b099a63f77e690e79c4a15024222c8a676a. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBZND2029202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43e5f57748a15360a0381bf4dd57747d6bf1d4aebcc2837c10896269364e8dd. 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/GBZND2029113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228507c3eca1a2d6d7676a2568d7729f1bbe05e18b05f0d0c8f92275c3408267. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBZND2029121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe832fe37eee7cbe00539a603f608c6d2914586ed98b10e2ab971a63336d03e97. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBZND2029122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff29d670c7807e898746312bb71013b9ca730e6d474bb5dae25ee4f2713168d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBZND2029125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878519efe3d921fe79b004e1501974efca5417dc4d8ed7811eb6c108517b18f4. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GBZND2029126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b17dba819795cf86a777bc8bdaf13d74d3f18e610df54d852f36cce835e535. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBZND2029130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77b61ecfc0e179b2c25283cfc9081303a1bcc6b0276839577811ebbeb5b85aa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBZND2029132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff803c0d706f25b2f67de70c6d5a04d6563496a2a97e51b22cfd399b0c92c4fc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:00:30Z), 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/GBZND2029133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ab232cefc8d03cae09f424876d1b0ad8b5f10f867ea8dec9bbf213c812ca51. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBZND2129303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d32c0ff6baf3176c944f5768c66278cb6051d69780ea252b18c22c80c84e474. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBZND2129305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5aedc56b264e8e207b6922ed012386a0f53020bfe9645265647145f390b2c7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBZND2129309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53340b61da868b7d9cc41a39cc3f6771dede1e7e2a9ba73e4505411d8499c88. 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/GBZND2329403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ab232cefc8d03cae09f424876d1b0ad8b5f10f867ea8dec9bbf213c812ca51. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:31Z), 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/GBZND2129303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013a9082f401911cb676c88f3bf0f8e2c8fc8192f80899fbd538b52530e5d37. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:59:54Z), 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/GBZND2129307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bbf2cbefb34c002280cc750e2fa36d8c86dea5c89b034db561e259adfa92cc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:24Z), 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/GBZND2229301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23761c58568f54b5643469a31baa15b2238efdc34bd83c6277a5d14c39fa1e76. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBZND2229302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e56d90aceb2a2dfe663cb403242a04dfb4464808671a547b1ac8c4fe6b4f76. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBZND2229303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d068d209417a890e72b395077ec16a78eaa2ec6e76a0e3cbf43a76b83508474. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBZND2329401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8122c0d32736436e9e4c4437d096779c446bdb05673079de03cb779a14e7cb2f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:11:13Z), 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/GBZND2529413.