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 0x08abbcc15fd87ffc7b18dfb786455db2383ff60bebc3e5d224ef9055b84e3482. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b01abc04-6304-4044-b054-f01da9e503ad.json and https://artists.proofprofile.net/proofs/artist/b01abc04-6304-4044-b054-f01da9e503ad.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 0x00af9ad6e7a2b7342aa0b86cd8b75363fc736ff6fc680d1add20e5a5b1d45948. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE6SA2301716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0252a9b75618ebaf03496d8b874386658760293e1a74b9a9b718be9682a87e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE6XY2313928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63497b2d95d1d5ace4123bf39c2ddac0ae5a056b2dc8777934bc93f842197481. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SE6XX2316645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e04855b2a7670ec949385237ff17055fa6aaab5e3b9576ea5e916d467c6fee. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/SE5BU2405806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd538531fbd8c97373c04b1695fdd3224b371aa39e7bdd06a7d339e778663eebf. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZK6H2567414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8041e88675cb808aa4d3860b1c0557b42c7c9e961c4d53016067b82c4877ff90. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6H2558960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6432bfe2257da0d2f9ac7d59d6e07f2f1d4bc433fa74f8b5581ff45c85a8fa. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZK6H2558961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada2f6864adfb97cbe1f221f3c44ae4fe09124e46bb87fcb866d4dc37cb2e14c. 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/QZK6H2556258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6498f8be8953fc4b52d61ebaf6748ea89a91351fcb2bed113ba2db6ea921316. 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/QZK6H2564749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08abf78e52688a82807c1512977254672e70aa02131163b658090431904f1ea1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6H2567045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3750ecf4bbf74fa0d96f87abfc661a7ffb68d7c93cc2a052b285a8237eb283. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZMEN2568140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1200a1d926d7ba6a68a39980a0ef090077c5a927bf3d76ecf27719af4298e52e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWU2521065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950859bea42723c428f164e19f3d84a5ef135e6377ac2e71b9626d62a24b5ac4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWU2521068.
HON JOSHUA ISHAKU MUSA SARKIN YAKI BY SHEKS JP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc15607c029952826aa7fb9fb70f37eeefdc4d22f8be2339acca775f9b6bb24a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZTBA2555119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226e160d66b725394e73b4041cde41643c8df86aafdf78b65ec353a1d7a09248. 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/QT3EX2576360.