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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d21f67ac92b53c1dc4f9b3fa68597894134acbd180fa816edb50c27f38d18d. 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/f4884135-216b-42a4-8770-4d58afac9119.json and https://artists.proofprofile.net/proofs/artist/f4884135-216b-42a4-8770-4d58afac9119.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2bed273a6110dd0854b86abde164967c63aeeee52a2d4ed82cb249bd9a5ee9. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:07:29Z), 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/SEWEA1400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2226f70bcf017bc57e497e0417b7e7d9fefc21129c4191036a7e8bc6582e732e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEWEA1400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8603d9d3df5c88be0fb431b5d8817e59251ec8a222805943c884572b5263d908. 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/SEWEA1400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f24a7f23baaeeba3727608e4419762bc6abc4d16088301f0cc93c0126b43427. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:28:17Z), 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/SEWEA1400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e72da75cd231cc1eba2a28aee8b3556ede98a4a4d0305c16830c697dd15b8a9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SEWEA1500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2226f70bcf017bc57e497e0417b7e7d9fefc21129c4191036a7e8bc6582e732e. 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/SEWEA1400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff62c64c2a9f305f3fb0170a737833a8f4a6232fdcbe9fe390dd4155cb8f9c9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:28:10Z), 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/SEWEA1400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2bed273a6110dd0854b86abde164967c63aeeee52a2d4ed82cb249bd9a5ee9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SEWEA1400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c550942536b7c7566ea08cab6465a502e4ace766957883f62d5934b944f672. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/SEWEA1400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0191226adcebc38aae5b09d87bf4f5fe448b75a437005f47b3357074cc2381b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SEWEA1400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8603d9d3df5c88be0fb431b5d8817e59251ec8a222805943c884572b5263d908. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SEWEA1400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63dbbf979a3d689ee49cb4f4cc735f64fd96e416a1a46e505239d052a38c781. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:05:32Z), 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/SEWEA1400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0191226adcebc38aae5b09d87bf4f5fe448b75a437005f47b3357074cc2381b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SEWEA1400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2bed273a6110dd0854b86abde164967c63aeeee52a2d4ed82cb249bd9a5ee9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/SEWEA1400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e72da75cd231cc1eba2a28aee8b3556ede98a4a4d0305c16830c697dd15b8a9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SEWEA1500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2bed273a6110dd0854b86abde164967c63aeeee52a2d4ed82cb249bd9a5ee9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SEWEA1400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b4aa9d2a25af9c32a39b99524da38c0a36c7d802385e1fb44c06671ab9d625. 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/SEWEA1500149.
DTTM (Don't Talk To Me) - Kilian & Jo Remix Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0597b20f36da19bcff343ccd42f46afc0262e00387533be41adef77640a698. 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/SEWEA1500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a88ccb120a48510094476f36096bf97ff90d6ae1aa88c25fa6ed15b490c511. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEUM71804078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6686006a10abc4dcc003c0688af52156ab58b6cdff87cbc8543e9ac0a377a1b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBKPL2020237.
My Way (With Mårten Brattgård & Labbet Musikkollektiv)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf62b38614c0e4992bccb0b62ffc04bce159f305e26d775195b601d450fdb3bd. 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/NLF711401801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2a2a9c401764f43ba47e82f419103906ac55445824e384f78959ad03c0892f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEBGA2000376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6874c5651c499a30466dc592164a90bf641afc29f85074d9bed6e4e17ea4f5f. 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/SEBGA2301984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6874c5651c499a30466dc592164a90bf641afc29f85074d9bed6e4e17ea4f5f. 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/SEBGA2301984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2a2a9c401764f43ba47e82f419103906ac55445824e384f78959ad03c0892f. 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/SEBGA2000376.