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 0x62589e3e2ca210382302f170f1d554d91efdb75036c0e5d16ef4ea059aa01b38. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89dc63f7-c997-4313-ade6-cbc7ca48593c.json and https://artists.proofprofile.net/proofs/artist/89dc63f7-c997-4313-ade6-cbc7ca48593c.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 0xa5794de9c08f541571fd58579ebf9f557064e03a080c7218cc26bfd0b1f66815. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:09Z), 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/GBMJG2029611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ee83a51a46f47d6745ab79cf158a00f6c1d3dac45d8a8309ea84dbd2a5685d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX26F2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dc6b52d5973efd1feba441338098d51daec1f18fcefae1b9f83afe937f98ea. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX26F2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5242310d61566cf7f75d0b21c17d866c05c6572afe7c778705e178e300e9778. 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/GX26F2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4c1c543705a450d98f5fc32cb29124f72bf1562cf4f39522149fbc027456d2. 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/GX26F2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530f3209e2ed24ad4e3360a6b01052491241e6e022db300c63e0a43d0f3c0707. 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/GBMJG2119365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb8332eac591e10e5cb23a43fde2159ad649e43cec5e2a4b3cf281bfa92e393. 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/GX26F2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda5ee06e3f462e73dc104fe5dbc3c204ab95b9f5219947f88dfb438c3d83d1e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GX26F2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b03009341d2ef5589431846c9578b2c69755349d1226d77408fccebbfb06125. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX26F2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d3e5577fd9e8afbb15c1c99ebde7db113cd841eb6f5cc7c9ca1c55226d00fd. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GX26F2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce466969b5ee26c59ad0acebcaa7e7b63d06fd6601aaf8e0a8b853763686eb2. 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/GX26F2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ee83a51a46f47d6745ab79cf158a00f6c1d3dac45d8a8309ea84dbd2a5685d. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:50:24Z), 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/GX26F2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5242310d61566cf7f75d0b21c17d866c05c6572afe7c778705e178e300e9778. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX26F2100005.