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 0x6778669e337667db1fee3e9eedbb8d90991a5d6c83df03e958a66b7803d06e00. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11468703-85f7-4f56-ada3-2f63fd5dd19c.json and https://artists.proofprofile.net/proofs/artist/11468703-85f7-4f56-ada3-2f63fd5dd19c.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 0x3d2cc2a4cd7a7a8e7269e21e10094f6bd6ae8897559879504e116954b241185e. 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/USA2P2240389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cccf2b57470bfef2c65ff0ee6aece5c864d84e6d56d04e0df793b7d84dfc553. 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/USA2P2240390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53d9e1b07ec8561d2ab89c26de3d246f81b9ba3e253759f668c6c85d8df7281. 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/UKXN22208036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c377fe5e9a2c089a8bfeb43bf19d45b9d4df0db8082833f3edeec48dd43613. 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/GX53U2086920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f09782b8e9eaf5ea94ea38d8bff7f762bd29c3c065366584a61518c52aa4033. 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/GX53U2070288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a35690201c003ada57c0938cb1f93d9518bf9fe946634271ec1e836421f40dd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2147201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef7843153e690ff2b3b2cfa09d058251832837837d1b8a4fb6c30da5c915e93. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2147202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e1000a40e5eecb65f4aa6564857b7bd5da35f9d096fd828213c0bc259d0480. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX53U2023869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b166abbc5327721b1c2048a8f407052567060ed3517758ee4bacd0026365e41. 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/ZZOPM2110491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155e353a67d242789eca2826d25d78b2400be9054082834790f68051c013ba5c. 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/ZZOPM2106161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696bf938e3c344cc3db1aedfb1bd8062c49378467a1927c25641eac1aa8dcbc7. 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/QM4TX2246175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae803ba3f8626b45ce22a85652fc1d97d13f0ab88f0c2a3c24b8452df3daa62d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR96X2298657.