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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f60f429ec71a14a5d9744fe8d87e4b6b197506b7e921292438d1fd81aaff7. 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/24a5e0e7-2654-49d9-b757-d90a5d086308.json and https://artists.proofprofile.net/proofs/artist/24a5e0e7-2654-49d9-b757-d90a5d086308.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd9e667ce1ef5d42e7f3ad85888a0699cbd189272865e59736be074a176f36e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKACT2130455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1668188267e0f629fa79bed26570d131338587abc88a5c2e272b75094707ecdf. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/UKACT2130457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95aed55fbb01fcbcf8096642755c8f89c61c409cfe3d27fc336854118cbf4ac. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/UKACT2130458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf232ba0aaf589666ba64d92dafa293e728fabd5afa3302f57b9610d4e93808d9. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/UKACT2130459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf954d4b798b02304e04533fd3d39a6c83009c045966932392e99f64c54c94e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKU932390060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c36d7aba4d8c70ceff92dfd3692593e6fc6d4acf14f9eae40fe5906dbe1d4d7. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/UKACT2420099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459a592163e6597047e3aca069b44d945445b1c8840655646939e004f5808441. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UKACT2420240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c36d7aba4d8c70ceff92dfd3692593e6fc6d4acf14f9eae40fe5906dbe1d4d7. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/UKACT2420099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb637930435dbcb73640356ea41926ba678e7a1a7324cd915e5e97c649f75a42f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/UKACT2420242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9376cf01cee34c44fc19da36980e06fe4350be939bf7c067969dae2623f10706. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/UKACT2420182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f9e93cd3f5eae653a005cb62b17e7376064b78c280272058e9a0c41442bf8c. 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/UKACT2420244.
F*CK U SKRILLEX YOU THINK UR ANDY WARHOL BUT UR NOT!! <3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6656970464f8667263f4f72d1d96f40e4da3675a46181e1d5ce72a49bf7b03c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT22501795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185ea5aef7be521adb50b2c0c73fd381f4a1636cf57b66bcfba32ef252b4797a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT22300825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9585fc9ccafdcbc625e4c3b1f997a52b565376c6477e7b71b344b48dbcd42860. 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/UKACT2231072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a479507a5df2f228dd99a69a04799754826dad050f594448fc8961dcf8632. 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/UKU932290001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf954d4b798b02304e04533fd3d39a6c83009c045966932392e99f64c54c94e. 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/UKU932390060.