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 0x3b4d43db2eee320e986ca554d5f2102be67d5aaa162051ef8fbadcfede9c05be. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fd9cb9d-376e-4dde-8523-5963902b91ed.json and https://artists.proofprofile.net/proofs/artist/4fd9cb9d-376e-4dde-8523-5963902b91ed.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 0x94d275af7cf37b745977f4b16a06b8efc06deb4f9c600bb652a56c9b99eeb8ec. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T13:59:51Z), 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/QZFZ62154752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9019e5692a5893747199a8206dc61f00cf767a0591873f136f9e289f249f620. 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/QZES72137231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c434309202b25159edc13a54660007371c74deee4a1676356d9669cd81e17db. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:24Z), 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/QZHN32174222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2d6f5234bee7d6f1ed0e89e175b98d5cf667801c6b0f61dcf0213d7d6a43c0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN72197649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c10145c31741f308936f8b172862f3002a7ccd6d83a26d801a950bc9f748521. 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/QZK6Q2143105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d4bb3fe254fba273633222ee7aebf3a96bf6a00725a1c175401abc2174afa. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:04Z), 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/QZK6H2138783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51dd7f1fd07f58ea76b1f9110ef1f4f3065830c35babc203ef5771dcf521df1. 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/QZMEP2101829.
You will Burn (Father Anderson) [Hellsing]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9cec64b8013fea2e9473a80bd3600083a6aee1c8aa6c50cb194ce41bbcd1f9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHNB2291636.
I Hold The World [Meruem Rap] (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae56434c65e0741b536b54b4d5e9a6083ef1948799393a25906cd179ce427d0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEM2278046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aba7f280d07b829367d2637b00172110a90bf1c8e33466709d49cd5c4890411. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:32Z), 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/QZNWQ2322949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdbc68ff6782f21617fdee08c6e2070632b9a3cb7a628de8b795412716a27a1. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZFZ42406168.
Do you know where at? (Igris The Bloodred Rap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e286c05fbfc01b4da6a539df1f160ffe294b2f74133baeda22089563b4acf4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:30Z), 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/QZHN52507315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d95723804baae4374422148deb4fa2994375000be57550c79d1bfb1182d5a2. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZRP52525110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2f0770849a84603f960c2bc52428ab236a8f85516d1e643f895bc06a90df50. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT3EX2586537.