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 0x07acf3c514823c3c7af9bfda8089fcff9d185306eb1ae41e251027c6a9e92f23. 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/d84ee7c7-8691-44d6-8aad-c28c4f51da09.json and https://artists.proofprofile.net/proofs/artist/d84ee7c7-8691-44d6-8aad-c28c4f51da09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Hills (feat. DEELA) - George Daniel Remix
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 0x9f1cbddd109232664511108a16868db05b62157cb56fb8ed430064a140df4bdc. 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/QZNWP2350542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94159d14b4cadef255e9d7355535e9b172935b173c39391b35bc8a7bd80b7075. 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/QZNWP2250173.
In The Middle (feat. Odunsi (The Engine) & DEELA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b2fc55560b6da57ddd8c99faf308af56b9a4473274b0edcb44ad568646cd65. 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/UKXN22319349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7a8c348b12feb3e25f2502db015257f934a46f20fa6c4c6970e122353997fd. 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/QZNN32324448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94159d14b4cadef255e9d7355535e9b172935b173c39391b35bc8a7bd80b7075. 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/QZNWP2250173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94159d14b4cadef255e9d7355535e9b172935b173c39391b35bc8a7bd80b7075. 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/QZNWP2250173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1cbddd109232664511108a16868db05b62157cb56fb8ed430064a140df4bdc. 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/QZNWP2350542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7212a38f26654cc4b9c214477435490e17d8cada04e0aa2fb4e504c5341ee2. 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/QMDA72396344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ebc4b8eef493a22b212e1b7c67260b4a4f0c92a1b171283149e7a46b3b272c. 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/QZDA82577033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f8d6110e180a776f6b0834f1755b398007f0813bbd1658c7b4be2d68592aaa. 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/QZDA82577034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c0f6954363b6d447eb630ff7e114ae9240fa1716b7a0875aaca7bb241626d9. 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/QZTAT2488743.