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 0x26c9264881e670e166470f63d3190bc1842cd39d7c72e62c23d08dbfa8357434. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a2e3f1f-6c1b-4ae8-8415-60a114abd250.json and https://artists.proofprofile.net/proofs/artist/7a2e3f1f-6c1b-4ae8-8415-60a114abd250.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 0x80ffcbb065d2bdab79aeb614816a360d2cc1b3362c9c81e0de486ff71c869133. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TR0861401718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1ea0706172ae237c386a346c4106d360f53b637a0aee80ae7061806c320a8b. 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/TR0861401720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3902b20a976c66a088d9e6bf2f85dd8ef21e08cc8335ed7f259d4bf985125a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TR0861401722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b91c9cc861c5620787071217bab228c07e10cf13f2670c1b437cc8c41a64e31. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TR0861401724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb69bd456a224a73041d018b9f575052317c7b0dc05d70e40f900e49a5b1a74b. 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/TRBIR1900235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c3bb548d1f3236efbda14eb9bdee9ed6dc8b1f940cd4c3ffc7e99889242581. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TRBIR1900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5d764fde06bb52ac5f4cb94f8ebe4705f8c6f7b275b48b46bfd6342af8f886. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TRBIR1900241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe20879967934391f8b0fe189cfb436c489b9fa6f10d9da644212abfb7e3c8e. 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/TRBIR1900242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a41d8f6689b6544a8777f91f49cff7bf563b4f6a9455d9ef4cec2fe70190a2. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/TRBIR2100566.
Potporî: Zeynebê / Xatunê / Kuro Lawo / Leylê / Leylo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fd990f2ab7382cb9495fd3986baa62f24eab1d519324ded858462b2668aacd. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TRBIR2201460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc58ccc1bb23398c21b160d06e1594f9422d4c7689236b4947ea5cda87e7e1. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TRBIR2201529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab0917409d8c33f66855da742c29d25186139b61abf0c78525d0b47d2980d37. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:40Z), 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/TRBIR2301726.