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 0x445f537d911b5791f8b2f680db64f310d7c331df132ccc1c80bf6dca6057fd99. 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/bf19e6a1-9c02-4ccc-b6ba-635a7e5db11d.json and https://artists.proofprofile.net/proofs/artist/bf19e6a1-9c02-4ccc-b6ba-635a7e5db11d.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 0xf262e2bc3c5de319842099a46397225b7be6d0b0f566f176ca86a7e433cdf08f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ62494837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723ad6ea1d4443547307c89b2b9e5203ca0eec071380e8d0e788b15dc5ac8fd1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ62494838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e745f667d7e3c12a1e36b45a66ab94dd45420fe8d9e11cd8bff735af1ee533. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ62494847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4f7d1767a4639695dfa5de5d0180d48cc995bc1c0627caf70364a401df63ce. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ62494851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c55b2b418336eaf2997cf205191f8f5211bd06c2d5406aaa10c7f12164b7c66. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFZ62494853.
Hot Mess (Bending Grid Cyberpunk Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1418b7c06b5083fa5db0d2d66ca84b6fbb6d6c0f59f71e92d67f89acfe9a44. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFX2464912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdcded1412318e8a91775a7ed82f96b1cc696fe01cb2083752b325aed9b71b5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ7U2447375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ffaead09eb710be8b45d92ddde0604f95bb686fabe4ca18bfd98a9951f001b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZZ7U2447376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f42293ee8e852eaeaabcae19b1304717d0077090c5035516d59c12a2b20894e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7V2459634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0680de258a12d3030be8c8b3f221be036f51082c7bbbf77c028977fee0acbf51. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:44Z), 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/QZFZ72582656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dd34e69e850d846b0cb32af8549d5f6af05f71040a078ba4cb0e79805cd503. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ72582657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a00890dc7ff0b96eab67ad168b06186ff614af8e78cf0d894842921b844cdbd. 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/QZES52511802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6a36dd877b004867d3699764e7d653af2c7511266e7e4b7993c1a7943a1512. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZFZ62494850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf818d535c2d13e500b7ddb5bfd36d38c1e6638c0255550c96eb1390a9de588b9. 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/QZNWX2512767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622dc8456ab99bfbcaa3fb5939fedb5f1a9125b664bd2d7c76a6813eadc551d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:33Z), 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/QZTB22579243.