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 0x26783e776719effdab55984cfedd51c1227cf3f9822c30209df69b9033f31435. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddcbe470-26fe-4da8-866b-7ab5a248de5a.json and https://artists.proofprofile.net/proofs/artist/ddcbe470-26fe-4da8-866b-7ab5a248de5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kwandonga Ziyaduma (Remake) F.T Dj Xanny
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 0x52ee31089361629b374b172329259d5d2474a089a959c6b4bd3e229ffc5e8a48. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZDA52425212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da53a372e811465fc3fb64eeab8a272e3f80eddafafa722998c5588bb8d7d5b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHNA2443303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc05cbbccf3e69c12f486ada59fc4c1e51b1fc7c6f27cd9e7577a984ed18683. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/QZHNA2443312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b63f504adc78929b1217d837f6b82bc61ff80539add2c4bc3e6e01576df7f3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB22413076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6474dce82d576ee57ae287551398c52dc089cc32360e150b3a75fefeb80c9622. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTB62480580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9cdbb9743edf0c1de3295fa10d8ffa6ff3a4dd4f598fd80e956e6c590f5dfb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZWFS2427292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611ae462bea903867a921ca97bc066f63f6d5c74377bf1a3d96ac966aa6d946c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZZ7Q2486012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca5d675cd33a29772ecdfda97944c24bda582b52cd7a58aa693722cadc544e3. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZK6G2509518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90340759b7d5ed4a4c7ae24811b01f408c5be13922d26ec0d3e2b5cd9b853f1f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEN2598769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd41c5c721eadb24ae7b71af6de362db6041f16e1c4313527aabd44004c915a7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZNWQ2555769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18bfed78bcb936c12fd1b5ab06f8e30ba44eb7d026d5c847c1418ee7fd7b703. 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/QZNWV2583068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f4ba5a4f6ba12d4a5e71ff0865c050bc9ce1d772309c7e65a2fa63abeaa063. 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/QZNWX2564659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6f5eef9f09819cc7fe6684ff5a35a306bb4afecef69c02c39ce09a2683d41c. 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/QZTB82576055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b02ad82aa7bf9b6d707af1a603756209993462955f5455304e865c0afff616. 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/QZWFE2523656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78efd13dd56ef7f6f1177ce901233e85ffe3bdfd300042c15153ffc05744319f. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QT3FG2597094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6686510db6762848f85fd45d3e8b5fe6c90fee67057707a32fb1ef6905b7902. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QT3FG2597099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ef61f50bdb868bd0aa556403c341fc561de903f120ee01317a9f61cc54ff0f. 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/DEH742425006.