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 0x50b65cb36fd036640881fa9f64dd43a017eec12c7d4c8f69eb1661dcbc4f8a7f. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97c00a43-b7a7-4cad-a50b-30c247c433bc.json and https://artists.proofprofile.net/proofs/artist/97c00a43-b7a7-4cad-a50b-30c247c433bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Idmemo - A Future of Nostalgia (Compiled by Vladimir Ivkovic & Ivan Smagghe)
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 0x22e3aefefcb8627afc73b80dd869e45270e202087591b2386efb40e9e6bcfed6. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBTSL1400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779843ece8f1eaf8a7f48c1db0876c2dd83ffce21d8784af1c670520a1dc0c60. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBJX32081001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f39d94dcdb756abe16ebdb050cd406acdd43554988e4e4700211ae5888b76c0. 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/GBZPJ0900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7cd3bcdcacae59d59c4edd01e55f313e4f818b6dc2a248d543ec44aeeea23c. 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/GBJX32081002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3803aa41fbc2c36f6768de89345f8e5bf0f5bff1299839c24f3b7e1762f91bc5. 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/GBJX32081003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76f415c54b41bfef4195dd242eb031cef9d34764eda1a79ff68794f14232c00. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBJX32081004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af9bb7553422c230c4a4fb2509fbfe0f2732435358d888c956e4c1121a8472a. 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/GBBPW9500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916ac53be8619a35b86153fc92b8fd84bbabfd0fbeb27b3d56b739dd835bc9fd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITC649300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a84d93ac34fe12fd2cf034db3ba93410c8bbbc961076cdf863000cfb96d45c8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBJX32081006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c43a73892d20dd3d5aa5a6c29893b83388d382fc0600bd44d43cb984e5535e. 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/GBJX32081008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee75ee0738ccf04021d8c83ae0a26aa9d5df47dc65ca4137b9414e40dce5cdc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBJX32081009.
Post - Nichts Ist Wie Vorher, Bersarin Quartett Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388352968b76009a97f3bb6a2f159f64935056067a374993bcea8869230fd295. 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/USHMD1017801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bb7a488bd170425add745176697752abce095f6126f4aea9578dd83c8816ab. 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/USHMD1017802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a41e1a39a6490d8680adc2e6af741e92be0ae6bcd1c322966767cfc6e65af92. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USHMD1017803.
The Days We Spent Within - Near the Parenthesis Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d908d346ef097ad5329c86eec30e4ac40f625d153eafcddfb67409eed37eeb. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USHMD1017808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c168e36436b374e60229a565ed98b20f32bab88754d526b98caa56468222c8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHMD1017809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad45235a1a04cbf7abcd9c6486d0e389c84fe207be0f763f21deb55192dfd7da. 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/DEG930200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9f826c20efc7109c6c25253944c943839568029269e99e2929ba0fccf5f734. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEG930200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828ce97ad0598917eb2f3655308f13edebf2e0247b659b85fd32daab5af591c8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEG930200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f43ecf16562917a06325b6086d3f15a9c2b603d3cadb497f92efa04248b5f01. 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/DEG930200271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9261476f68e4e42dc4cdc07435f27f332c8a2b30c3212a2347ad17ad6c87a15. 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/DEG930200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8d352e53bdb6f51c8250ee59de66b19945b563bc991f2e9d33f1f05a250a72. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLP500600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c98146c267eb7dd56a7a73903a72d7d2c40dbca394ec7be582a07e661be5d1b. 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/NLP500500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baa41059f79ec7c96a14240f85ec331249685a7b9aa0daa413bd9ec1265cd30. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NLP500500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed16d38d78b5d7bde86157f9ea45483bdbd2a06e4d7778cc6c7cac12d2851a6a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLP500500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644dab73a75b956c0e2ba7c4980e670106481f0b1e98cfe1787854525d7e6ac6. 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/USA561111272.