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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd8402a0f76409684f3c4f7e8fc64ad621a9cca05b0b1294165d52ee890dc0c. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e998c4a0-5151-43d3-9b2a-0c21156d58de.json and https://artists.proofprofile.net/proofs/artist/e998c4a0-5151-43d3-9b2a-0c21156d58de.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffb1a1d4de2e109fcf1241529b22edcddb255b71d5497516e0f58845aa5bfeb. 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/QM4TW2347487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf17e6e24b0a9396dfa010464a1fcadd0e56a5dac7e9ec154f7e95c50c71d9a. 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/QM4TW2347488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ddc351ac8b2209f0cdb835f8ab1c88c4efe444aa02d99afa6d3d1e8e2f259b. 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/QM4TW2347489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef627364e9f3b6e61374c767f4c10b20d02d3a1ce120b07beef29e700abdb5. 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/QM4TW2347490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0796d21878ab57e1e1167b80ace644fb1ff29be5bcb030fa9eef7e33bb10e. 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/QM4TW2347491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf04e832734b79de4f23bbd9ebd594f678b280a89c473f3726511e90cec5687. 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/QM4TW2347492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179cb6d68eaee33b18467301ad428e937e6d373f06fe634b464e7b2a0244be3b. 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/QM4TW2347493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d15813f2a08c335673f0abd5041a9c8eaab4261c630895507aa6d5f45f4394. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QMBZ92248528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba599274d2f036ac3e7fec4a2f12da80df861100ba5e1ed6e46f8838665afa6. 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/QMBZ92248529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d0729bfd44738c06e49116bc4cce408b1fe304fbd49c4508381bf36706da53. 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/QMBZ92248530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403728162e640dc1aef194e3b7c4f4c01a18c1b96363113026a4dbc5a7653841. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QMBZ92248531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306826379e7f67c4336d39d5b57b7286240223320ec4ca519a15405aff4990ef. 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/QM6P42206656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228490159122a68b579662dbd935444b646da3168fef64f3c538f0cc17a42732. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QM6P42206666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b66ca22078280addec2b814519dcde35d7591a9e2410d59df8780e09898232. 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/QM6N22283995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291133480b5efb94985566f6ad34fc4f82dafbe62cc6a5a13a63d64682824771. 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/QM6N22284019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a7f8633ff7017c82803aba045aceec9144fc4a93aeb20ee1bca6d9b960f63e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM6N22284032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6201ba5c3a0f493ec61ff6d5a55d075dd762476f14567dd9c83472183587c5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QMDA62472841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3506a42fdb8cbab24fb5e3d4168a52d9a55580c7dedd96ab21374b76b99a8a3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMDA62472845.
Igbo wu Igbo nuna America onye Iheoma di mma
Igbo wu Igbo nuna America Onye iheoma di mma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e227661c02f6f745e0d335bacd42da21e91634c9e7fd3c6ac48355ed33d1975. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QM4TW2349522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999bb74ab104baf2b7be9da09aed450570346841dbb4c411bb910f28dcea42ea. 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/QM4TW2317302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc393c1e573b0918e094dbbc85f620be529aa4a7496fa73fb4f57ddd433c37d9. 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/QM4TW2317297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd22fd0a5a9a5b9cead3c6432437361e85bd0b8ba88a921ddcaeac18612bb5f8. 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/QMDA62220074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc966d2433dd44d7946f024c89ea93a5bf0515716b90c64396dba3c88c6941114. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QM6P42200583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65439f7cf373857f3d62ad3f462ff61d4ec9af3af8383edd742b778fc5eeef9f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM6P42208239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0cb77a719d7636a0eecc42cec1e653c8e7a2113e3a720a3169f791faf4e125. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QM6P42200636.