TRESOR (recursive acronym for "TRESOR Runs Encryption Securely Outside RAM", and also the German word for a safe) is a Linux kernel patch which provides encryption using only the CPU to defend against
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 0xd9d1d883173f9011158c38133aeed9436b094dfcef0c3bbf610a90c56f082efa. 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/cf1d6fa3-1a7d-40d4-bce1-6f16cc0282ab.json and https://artists.proofprofile.net/proofs/artist/cf1d6fa3-1a7d-40d4-bce1-6f16cc0282ab.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 0xe82ccc49659ff48397e03c97a61191bd53817de8fa43997312fad675b364c261. 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/ZAX011300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124e2e55117f7aa73c7baa7e1dc35473f87687744b9350ae0b685f0651d48f30. 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/ZAX011300028.
Mount Everest - Freddy Verano Edit Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eccf29d3e75ae8dda597af240c98d74d5808bf334cf12e7e546b5427f04a63. 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/ZAX011500056.
Mount Everest (feat. AKA) - Freddy Verano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc99d7b3a2a4388a481a2684d571575581ca21c8b51407fbb693b50bd66a3702. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ZAX011500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c97439536c10f53a92a0dbb5fc3187f87c700524eaa39ee1f042213e2c5601. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ZAX011300027.
Never Let Me Go (Spada Remix) [Radio Edit]
Never Let Me Go (Spada Remix Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6c128d10121fc398fffaf37b192b1deac0f92fd56576cb9359a440cba4dd9c. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ZAX771800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6b77176e030c4d5fa52e6bcc266897d9b222c3862f7d2a90979f4e4a9684e6. 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/ZAX771800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af03f732cfde15bf8dbe47e9685bc887d9c4bc8eb0497ffd6daa4d641ce5373. 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/ZAX771800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e457d17ef6ff5571e4ba185210f049da040b2424c787309bcd571dab05ea0e. 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/ZAX771800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540e8019c0b1b012fb071affe1cb5b64526cfb2d105540ce009cb14e1832fa26. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ZAX771800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419cf6449130b3abd9654b594e6ed8d8adbbe80d5e092b5432c1545b07c915d. 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/ZAX771800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552b60c51993c9660207915b5fbbdcbd2393ee168c1316394e2a83fbf7397f74. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/ZAX771800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815888a460c6f5339ace422a0fd9e3703c5067c0cc179b1d54c368e8aa87c933. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/ZAX771800013.
Lighthouse (feat. Da Capo & Sun-El Musician)
Makosa (feat. DJ Maphorisa & Kabza De Small)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf18d8aff5771afa69fa181a7031bdcc217fb29f26c3aec7560324c65336ffc. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/ZAX772100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d7f47fb63dd1e62e1d574b84e98f56ffc1bff45a4f099976bdef339d01b1d2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/ZAX772100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872e6b9cea5f85d5a1ecc7e561a047674573e92d047f361b415047e46770e2f. 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/ZAX772100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf36cc88e2142599d1141d58f27ebba3ba28bbb9e8572dbb016458ca173d1f1c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ZAX772100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af8de805524753c458be110f6c73970431b44b0724dde6851bb26d02817bd23. 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/ZAX772100059.
Nyota (feat. DJ Maphorisa & Kabza De Small)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d2667ddb76d84039aafab35fbd146d6b3b2d001ac3bc77fdd8a148ac399f89. 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/ZAX772100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3781c7e0c1e51d979ab5641ce5a31e2a65467dd47541c933c8167a79a14ce41. 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/ZAX772100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb612628c211ee0c679454a60bd96dc22a3ca4d683341cebf0eb06e4e7fd7484. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/US23A1547334.
Wale Wale (feat. Sofiya Nzau) [WITH U Remix - Radio Edit]
Wale Wale (feat. Sofiya Nzau) [WITH U Remix Extended Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1c943ef9de27b62229b0f6f6f202be3e8acfa3e800f72cc3ca575e8d8ab5bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZA34K2503027.
Wale Wale (feat. Sofiya Nzau) [WITH U Remix]
Wale Wale (feat. Sofiya Nzau) [WITH U Remix Radio Edit]
Wale Wale (feat. Sofiya Nzau) [WITH U Remix - Extended Edit]
New title: Wale Wale (feat. Sofiya Nzau) [WITH U Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1c943ef9de27b62229b0f6f6f202be3e8acfa3e800f72cc3ca575e8d8ab5bf. 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/ZA34K2503027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee2ff5d7b36535572a6e18ed85324fd5dec54c96489c4d915f33d8c2d2dd241. 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/ZA34K2503026.
Wale Wale (feat. Sofiya Nzau & Benji) - Benji Remix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bdd2bcdeb447b2a7487ebb61e77be57d21d20df4add2ed41b6a8750154eb78. 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/ZAX772500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7e9b0c5c2e09fd7c16713d311f00b3268cf63c9d7e8567cd70f43957624ebb. 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/USUS11700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd834246e7671a663eb08775a238fc8cc5b0ff19ea53e7d068463934c103d9d43. 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/ZAUM71600138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c85b802cafd5c94cfa7dcce636e689e7edeaf45eae2882d966194ef33bf5fb4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAUM71600990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb175a9026f699df4e3ee94fb60c40b77906dc84bd9ecacb1ccce8271debb02. 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/ZA10C2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbec889d7cfc86333b3d54240712d1c2b7cea35352d3c765f56778a21b78c6c0. 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/ZA10C2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e714cfd0b286922e241f0823c584e982b3b67270eb5273561fb285fa4d2a670. 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/ZA10C1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4044d793c881f6e636954906df71871348c35fba7542f0cce6dde5c1a2b1e4. 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/QMKHM2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415bae3c28b14a26f5bb261944556ce8611d290340f7faae923dbf80dfe68e37. 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/ZAX771800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350cd1f7e0bdafec033c5cf55f39c5d51a0c87336e27926638a3b64ddb766ec. 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/US23A1501619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13092b9d3402283159c67f557b4147f5f2bbb829fa4ef193a1da8b62887a252. 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/US23A1541066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa58784dfa6e92c74c8a1840724940c2e5de08b225fb1cad157a030d9180108. 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/ZA2EH2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5e2c0da20853a1e1635f7e19007cc5bdbbcf4c17f7fa4de6f5a986a9a7e5e0. 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/US23A1515451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2edfb98a42a83e083ce96f28a231b812b1be3b8f8a9774fc82f1e34888b7cb. 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/US23A1536177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344fd9f425d895669970c586c9e028879fa91ad45636af9405e92dfc4f7ef824. 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/US23A1551844.