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 0xae72e5a8c767df933e05bfddb630599d863e5bb9164bad5ed7257cb3c0082dba. 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/d02e756e-1031-4da6-b5ab-be57807486c1.json and https://artists.proofprofile.net/proofs/artist/d02e756e-1031-4da6-b5ab-be57807486c1.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 0xa069a49981357755f65f1a2ff90af705ad603a7b98bc743091b6da2c0a46b825. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:49Z), 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/GBLFP1823641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee5d8eafc3be1524884e0bcfd4087d5c8c0dd58728b57f308d7b148c0035939. 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/GBLFP1849799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1762bba20bb66f62821dad95ce5bdb5c39fb365f45814c61cfa90927db392fb5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:41:27Z), 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/GB2GX1900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d24f25df46226e26c4611219429e410478cb0fda763205afefde07570b927b. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:40Z), 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/GB2GX1900335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9175c98a6fc4342d08e9bb90941dcd441c8ac495f59ce9361386d793d79c5373. 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/GB2GX1900328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2a5020964ea8df306745be9cae38cc560d8622d69c0166878c0091cdbfa5da. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:41Z), 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/GB2GX2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaea0a17c7b12fefac9a18257f3d129fbe77b9113df03d951ba3953b5c0d51c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2GX2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9534d4ebd733e5086337f01501dff4191cdf53544d04a311931994f6eb4f1e1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GX3Q92389527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4d1469b50942a4b2ce7f035811cf292a5d04a56009bf7fe001c6947c94616a. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:33:37Z), 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/GX3Q92389528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2053408f3b49d028c25bfd488ff2861ff6f19ff1e734cd9a4937029834805698. 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/GX3Q92389529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592562955aed043b0b893775850fad51b893c11740ae6ea3b3692dd4ea079962. 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/GX3Q92389531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01579919e52aa443d1246fc0d9c87b573b86b45c1d8183f81f21332fab071dd0. 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/GX3Q92389532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9534d4ebd733e5086337f01501dff4191cdf53544d04a311931994f6eb4f1e1. 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/GX3Q92389527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f301d1cea2ff7aa9e5b714b2336924567d8b0053aa765a2fe4daa141d19780f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX3Q92389534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cf38b5e29ff1d6a7885f3245935c5530bb618c08252c856a43c126c08c2958. 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/GX3Q92389535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5223bfd39c79e08d33e7dc76df0b7a21fb1d8b881ed87daf2540815cdae3f33. 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/GBLFP2365793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e83e6c4e5f6dc7b3a760a4692d4b20e578c1ff60f1daba832fd1b772b153dae. 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/GBMA22095904.