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 0x5da0c40d37100755b37a77bc4e4a21b3dd368520de39b85f6a8f7b0b82edca7a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec50793b-a93a-415c-84d0-fbefe2daa1d6.json and https://artists.proofprofile.net/proofs/artist/ec50793b-a93a-415c-84d0-fbefe2daa1d6.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 0x7d5a6155537351aaa286314f4587999ffe9026127ee6c126d877c192442fa05f. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:05:12Z), 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/USA2P2103824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96f6539886f523d6b814c004f6f41ea1d72956298cbdfb86df6b3841a1c17af. 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/QZGLS2242367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a5ab2354efc3a48016633a390a0f7077d5f96c8e9beb21bef678685ae654ad. 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/GX3Q92053673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7fbda6836cb588c339745cd9e36c01f45dd873e6e5f586a8d1dc75a306a203. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2GX2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c4ec828cb7cf362c22ae2c2ce231988b4557117ead0d88dcb4fd3ac9e4e59a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92188287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe80c23d01054ca4e99fc78a541dc813315fff7ca7197070407a01c8e40bc1b. 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/GX3Q92120254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f242d3723558ab92ef16fc1140b75c00805d93d6c38e422b35aff724c65f87d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2141042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f3ea32d1482c52468b4a0d3d36194ca7a23e0ccbadcdb55e0ff2583d580ce4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKXN21907991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce7d4d28a3498e70c04756b9208f6543ff0ed94717166fa7a2fa5116981335e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2015558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec53e9c8166739291fc0565715b17e1fd165cc5d57f61b5a88499fabe048a585. 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/GBMA22058315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde21abe1727176737ff6e2b61f6f67241f7a39c05b2678b73a5778b2f7739e9. 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/GBMA22363669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec0be3da71246a18ca3443ea3e3e1d8ddfe844cd62077939d55bd3c08520552. 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/GX3Q92108912.