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 0xc93c3264b8cfd63e87e0ab75f7679dc0265328780193ad1c27e475c564fd7762. 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/b70d0ab9-75cd-40df-8cb5-a25f91ded3de.json and https://artists.proofprofile.net/proofs/artist/b70d0ab9-75cd-40df-8cb5-a25f91ded3de.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 0xc2103e0b3c3043423dd21c5b4da4c72f4495e47757d5fbc416e089975f5a5a44. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/BE99L1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a8d5e73c0a3ddb651bd2585da7eb0a9dcd1d2e3c23071650ef6a351e19dda9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZPEW2449282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb320509f56857c1f27d7aed86ef1b74e38af7e01c82c08d37f8f48f3d7a2b7d3. 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/USUYG1369583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe318431d4d015697c3eede0cd20453709754fc83a105594ee6dbea8592913d. 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/USUYG1295730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe544ca944dc40c8ab9091b1d115fd3cdc4cb7dff1e07c037661971fb293fe273. 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/USUYG1364608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb320509f56857c1f27d7aed86ef1b74e38af7e01c82c08d37f8f48f3d7a2b7d3. 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/USUYG1369583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dc1c82a30199eed71680f78f8cd74fbf853d65156c7a883c5b98ad092c820e. 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/USUYG1378746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69768d6ee82d010a92b65d619a68091b1ee1d65e6e30a22c7824d8dc386a4b47. 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/USUYG1378748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe846e887fc7fa33f9b41169c6be0f75186043a1cf13036c3e7d8a6349e38115c. 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/USUYG1378750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d54d9a3813e08e1ca40fc0e2a05cd796abaec7447afdcb57d291c376f89264. 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/USUYG1378755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb320509f56857c1f27d7aed86ef1b74e38af7e01c82c08d37f8f48f3d7a2b7d3. 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/USUYG1369583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52efd471c0ec237a6f079b247a34dd1f29cede1ba712c19f37516eca6ffdc837. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZVEM2387526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d19467ed02df76c4e1da489f135920751de69e8f8c6bd259625e200d1258c. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZVEM2387528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b9d011905830ce4289bf91a0163c27799bb0121c2f359ef6197882b34c1ef6. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:33Z), 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/QZVEM2387530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6313bec9b9869bc07f313f0aa0a661cfccb602b4a035ceab667ec1775da9316c. 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/QZVEM2387535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c45ba94c668b014705816505259dac2f58cc1b167504892a6ec835e64d2bd7. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:17:31Z), 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/QZPEW2478823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50e4cba00ae04be12dbe8eaae8e936793ce079b64ac642893a7e14f4adf23dd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:07Z), 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/TLVEM2424598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb6958aa7dcc28de4cfaf438a6f49c81ce6acd26e9bd502247ed7fcf733a81a. 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/USUYG1303949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5492c39d28a9b664d638f3049ef74c98176bbd1e82259def0503d9794500638. 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/BEEJ11900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5492c39d28a9b664d638f3049ef74c98176bbd1e82259def0503d9794500638. 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/BEEJ11900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b6e843ef1058d606cd90576e55180162adc9339306b53be4150a0ca046d8b. 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/QT2VB2477812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12ff1d41476e535534bd71c62a5a78286364d20f0bc08c70e1c7f80f5edec04. 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/QZPEW2468982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c431f3afc6e3962b8a4dc2af93e2fcedf35643e7d25e13b4e92a98c0fd3af2. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:25:05Z), 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/TLVEM2421694.