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 0x6b3286b201fa2dcf7ed2e025e9d69dca3124c5b89bbc769b2bfec7c6a1a83e14. 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/c47f5061-3532-4c44-9f16-ceec9b2142d5.json and https://artists.proofprofile.net/proofs/artist/c47f5061-3532-4c44-9f16-ceec9b2142d5.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 0x6a474bcce98b47fc7778971e2ed7fa6b2555421d2088ab9851fe61bcb296016a. 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/TCABW1482369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25eb6c2d24280ad1948b349ff715f8a03fd21c34f38b616ee1b6f1b2e647750. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FI3MC1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf103204bd3b39e059fe632579e9e7fbcff2b51ae1a4c1d9490cc6be1ec78320. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FI3MC1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6875b38bfa2f8ee973c629f48676b2ca74f65a580bce33b7fd3954f22b878845. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FI3MC1600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7739d97fee06be86a835f93cc8d7ce16b7fd812e7ffb45dc35ee355b9fd1c6c9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6H2086141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0458cba50f686378e99db5ce222e48b270393b62459d03f54540822a0c6b4d2. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:55:55Z), 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/QZK6H2086147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd302f0381b78f3550f41a1b4e974e4a6a7929d16dd5ba835e964ddcd022aca5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6H2086153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6eddcdfedd2bc96fd7097183c2dde8e2b83233fef1ef22dc542d91bea60771. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:25:50Z), 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/QZK6H2086159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182efd01876d4370631cb2c07bf7c84e85c97fe5367aad8923bb0dc10b7f5c0c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZK6H2086161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8521df005970e16ae979ee790038ae7c50be8faf5207626de8290cc931f0cc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6H2086171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69510b0ed8e4c3f0e627a9212e1661467f02ef313831b4a179d2e3946e8877d3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6H2086173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f07cd9b17c2a64bae621791ad1e2706a5481f81fd42479a801f03cc402e3d2. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZK6F2102091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045f6ec7fd38a163e56881c7c82c18a08b8a54dc4d7b755d89530c413721fd3f. 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/QZK6F2102100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55e3c0b2631335cb28e3a43c7d33efae582e043ee73abfe7488bd996e561885. 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/FI3MC2100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6940597b360534a0907a3558fb7b6b0345f9d987b42f754cfe94b68211ee2e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:31:07Z), 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/FI3MC2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432da60bc83d388a8ea6dd75375c852de931d3a4f9fa7afdb9cec5ff0fd0f41f. 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/FI3MC2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae2c8260cb68c0b7ef9e6509b4727cd136fb51825cf9345337a8c9e40c8b7a0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FI3MC2400008.