Rewind may refer to: General uses Rewind, the process of winding magnetic tape inside a cassette or a microfilm reel backwards to a previous point on the reel Rewind symbol, a media control symbol
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 0xcd1de8e7a1a562ac696af3d476a7804a2ce8d01e68081c36196f5aeb144e7535. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da7df9bc-640d-4dd1-a378-b19fbd8f3732.json and https://artists.proofprofile.net/proofs/artist/da7df9bc-640d-4dd1-a378-b19fbd8f3732.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 0x9a00c2df9ab913d2045432b14daa247a63421a4267beb6d2f25572fa042d55a9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA52341090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0446988674e88d35ae7c196b73b3882a8d976f2c8289308fa1eb39924f4f76. 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/QZDA72467264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22315a02627888eb9e2c464518609f826ba3ea49a853c2b5629d47bcbb5aa452. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZS672444522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c73258a911d733157d463151042e3c51efb1bdb4dc858c3437420bbc2c6b7f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZTBC2326960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0573c7a5f6874f8a7f5781dc6f3d7cde6366b7c768677d16b2fc448b186e22c7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZNWX2304622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af3fb7bd2c831941fc80fffd86ad9479a7442af41ba50e9f7eab7e6d07075c4. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZNWS2336425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3310739d55d05355a583c5929f728f3f005d83e6c8d89a304b494476be89753. 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/QZTB82274743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0238fc29f0696e274007f2816867f3a6c5681e1728536100fda290a33ced47d. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZMER2239265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ade6e99c5ed58c054b9b270e76f7c9ef45ee10a79160724c5d3be8f26d5d748. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM42K2375221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7011efb54de16fb4c756d57bbf79b150807077e2a8a70d76b0300b895a436614. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZK6P2380430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9cc435cec1cdb8d86ed941f9309bcb022676f75461b0b0f4bfe0de50269215. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZK6P2380431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06b99c619305fdc0594f125fa60744425e24a42b128adf24344c948bf4525ce. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QZK6P2380432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b72a2ad5e92f845e5be1256ebe3fc66c2526d63a98d983483969557ac09e2d. 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/QZHN32424066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b0dbcebda3caf33e071edf464f158c2415d258b4712a6ff8aac7f87d9fe9f1. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZFYZ2329513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18afb26856c95a20240207a9077346f16adf6da7628569f4a14bbdada7ad0f2e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFM2333677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1536c4bf2313910e8413d713e81e3159a142d4a83831a845b73edebf1c0c916. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZWFP2336080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d7b04fdbb6e388f52dcb6cca146d37254dd5dfd0e465a93df1cca1bb3b3e4f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZHN72574017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c3679adbe254aaa5380c9f24ccd807225def96b0ce592433329024bcbe04e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6J2593266.