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 0x702e89c82a44e5d5cd814675cd311e0d68974967cc476154ab2748777ea6930a. 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/dd461b94-981c-4929-a55f-e528bfcf900b.json and https://artists.proofprofile.net/proofs/artist/dd461b94-981c-4929-a55f-e528bfcf900b.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 0x7f5977adb52c0cea8f41e4f19683e9bfdd8b65e8720e1e6a2a1cb004778d12b6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:24:47Z), 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/USA2P2419966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dbf43878fbeb649382f1330c639bc71133f7acbdc9348266708970a6652a10. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USA2P2419967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bec57e31b697cae91edc98ea2efc07aab1143fca8ecb0f67cd88d6d0ad42717. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USA2P2419971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412896f337db39cf397e8b5508022ef4fd7a3e228321e42540c648f2a7c79cb1. 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/NOX8G2400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da68325a7db3bdc2fbba7dd3e4bce74114bb72ac05de707c488008d45392f75. 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/NOX8G2400450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe280384fc48b837686cede013294fe7eacf4725b2e2a476c27c0bfd48c981a6b. 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/SE6XY2576727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e71c77edd99f14b615c4ca1b56507c6eac50fc2521b259085b7236813dbd890. 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/NOX8G2500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d928c897180d7a82cd426cb33e93c5e6396a5119746c3d72b21aec94de77052. 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/NOX8G2500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04a590ac1cd9f67b6033ff9e2f06f7740bf74c0c5564bcbfeeed00c65fa4336. 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/NOX8G2500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735c820af6f593f023a6ff9a0205614ae7e9dc9d59829c7ba4eb35af1fbcc375. 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/NOX8G2500142.
Moshtits Baddie (Moshtits Dønskirussen 2025)
Øya Skal Trille (Teknotryne Sandvika 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a20c5f54614da780ce29ec29109e170905012c81c3fa3b12fb2e18afa6f00d5. 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/NOX8G2500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4951ae2b2c2f1a3650fba83094fed86615a557fbf1e757699376efa02ac12de. 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/NOX8G2500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d573b636a5ff1f65afe35e75ef571fcd27a3ecd4ba68c375fcd4aa6314d103. 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/NOX8G2500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212f08bf5e1729178ce79e0c116df23e1d6114ff131dbd00a797cab0bca1b351. 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/NOX8G2500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf18bc0e6e5a4c1ef084d2ed46c17e29d7328d9f1725124d61a416d65d6efd5. 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/QZHNA2593573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd527cd5065e133ce58b6a75eb2a5af5ae3eb7b2eabb832cef979cd71eeeb0096. 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/NOX8G2500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265c5892f73e96b295f6be4e462626aeb255d8f3e4909fc1dbd81449733f1770. 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/NOX8G2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3f987559037a29e0487dddf045ff645cb28430b6e2361c8617f73db64dfb1f. 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/QM4TX2543482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385fc16439e11a033ce32f12f7c37f4b6895eb56a62a81ee667163af4a437521. 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/QM4TW2534187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17ba014301cd753c3393024de6fab34ca93b0e7d63485e261f66b5e2f50bd66. 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/NOX8G2400542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c838b63cd725ff932ec89a37b93816243730ebabb493f95f8cabc3bb346f283. 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/NOX8G2400458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b2f78107d14a9828e5cbd7b10bb9c4e1f97d9e661a6c5e48f83f25b5a679a7. 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/TCAIX2427172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234fc0bec2111aff757be957e1ce54e5f333ed7b3e849c1f40eca6077067a878. 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/NOX8G2400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4894928bc750301ab44c8ca177d9b07527b1da4839f071080568152f88d92fc1. 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/NOX8G2400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5b0795a10150f6d5ae35b34eabbe530b8ed24cc1806d3fa315d45dd28dc68c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:32:12Z), 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/USA2P2458994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35436fea14dfc6de4b321988514ffe13183275404b9ed52f1fc6762bbb0501e4. 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/TCAGS2241963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d605efc1584254fd76f31e29c4acfdcbb6686dda8a1c6324a50087b63e47415. 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/TCAGM2254610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca992b091e765a1a04a9e448e60af3386c7390d63642a0ba34763b328000c23. 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/USA2P2422112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9959d7c062370dca124e84b534a3fbbccc5a0b65abc4f2bb6f800b18f4891e. 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/USA2P2422100.