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 0xcdd001f84fabe771b1d849ad9ee4e0a327000db2e8586dcf36addcff13ade547. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/286533e2-2e4e-4e2d-aaf3-78e7be0c1655.json and https://artists.proofprofile.net/proofs/artist/286533e2-2e4e-4e2d-aaf3-78e7be0c1655.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 0xf4961189352f4b9d538f9f35a3ce2c60794fc64a790a806887953fc48515066a. 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/DEH741400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0e6c53d3521c70b2e2843f1e6de9ab47dd5d802ac66dee16efa556bc592b3. 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/DEH741403465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9747a16f14809ded4874a7d4f9b96f950bab0db37e8bbb0472bd343e6a6617a0. 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/DEH741507390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec427745835312f92046911a1d96b11549c942a8767c39a30c47d32e480be62. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEH741506245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57654a6cf209e468176c5c91f914a9739001e92ea502109881224207fa2315c3. 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/DEH741507397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10f15095c6b88268738545f03f51b2f0603f6283b322036afd0a78f3410c17e. 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/DEH741409119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cd77882f923dd0ee713cfd91a706cdadecdf883243b572df46e1710c5cd5a1. 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/DEH741506247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ef6b811453cc6023f8c893d1ae3c0036237b341941175b36bd120dcf8be6eb. 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/DEH741400694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf212b011454d9b8bbf196f5fd30aa826ce0e9f70e789f5868b4b46d65801ea3a. 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/USYLM2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72da50f671df2ba7e252b53a10ac8e55434626e6c8b287f7d9db40571e2f1f8e. 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/DESH42000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b439b56faa6618e8cee87dab7b1fa8fcaee25f1aa71cb4ed6e4a8100c8fc3b8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/IL4612400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce181a71e1f835693a514a994f3b002935efdecf015ba6b74fc372492dd36b7. 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/DESH42000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d223772dad5065513b835cb9f9fff7337e487bba821c9067c074c532f558e42. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DESH42000022.
Ticking Hands (feat. Sarah McIlwain) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafde71cfde4063d881292ae4592d9ac8f8b27383e044761a49c0dada592c9af. 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/GBHFW1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bc798a3c657df1847e5c69461b80b81b977c7a81f15ca323ee16e3cc79fa58. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHFW1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8e10af9727b214fb7c868eb8cd9533b80ab5e59e6c8b855fe65cacddc8b98a. 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/GBHFW1700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8814e9ad741ff78cb9cfe29c397f399d3d5e058ac273727fe805ff33cb1fb8db. 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/GBHFW1700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea332d6598ff33562cded41bef1a01c17f962e937ded2a265faf31b2344be5b6. 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/GBHFW1700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba39350c136917d11c1013f40d253414d7475ac146f076cb8f62b6f1dfa529d3. 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/GBHFW1700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8074c2028556c5044f7a6d7acb30cf5732cdaa1cb76a522a643871b550d4ed84. 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/GBHFW1700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b106ef619205cc1451d7cd8e9d5b6c00450bb495a99c474ef1bb5e785d46574. 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/GBHFW1700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fd02832335bbc7487ed61f2dfb079580cdc7f51dab097a9af33083f13c1026. 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/GBHFW1700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2aa3e5dd6b6f6a8f5e3e389780cbd6f191d53e66942a0f6dbd218c5edf1431. 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/GBHFW1700041.
Two Billion Light-Years Of Silence - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487d9688258e9e5689e0eb11637167f0d67af8085ccc5920f4bc4490db5c2a77. 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/GBHFW1700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3526c8235e7cf2be7cb42bb32272f75760009d36b356ead8a743a2d78bf639. 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/GBHFW1700053.
Out Of Time (feat. Polica) [Patrice Bäumel Remix] - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288bd6feeb260fe954fb7ead5337e1477cae12fc20b9c0177ea1a50e1aaeab86. 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/GBHFW1700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4974121a09d5b07bc65e5fbbfe11c022c9f269c5c7f1f20b5e8b55475f475ec. 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/GBHFW1700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3d9950f9ec97ca7540ca672b5426a0c79c121143737880390642a3e94a27ec. 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/DEH749400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76e183acb2d6b62341f11f0caca716950b6d7f718883944763e8f6f551edbb. 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/DEH741644572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d805a4c613a7341acf4cb65a7b99f7d73cd45cb6a8dff0511263b25fbf18c4. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEH741644532.
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 0xfdb351b7807f7a0b6216aa0f2a2a113a605fb2824d8301bb80d1b5c785091414. 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/AUDCB1500670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb880b9f7f57b3560e5cc8301bbcef51cd22dbb024785e577c9dd350f420d03. 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/DEU671700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b7877806304cc1e0c8f3c03c4dbcff6498fe827359698bc8ed7f9241876668. 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/IL4612400146.
SEMF 2017 - Stuttgart Electronic Music Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834da6b13e0724541126a92e4d18a4362caa5334f283a5965f5536fdb3d1c8c7. 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/DEH741800761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c4f48de4ac5483becf49507273d6bc2277b84157e44463f1fdbdaa0ca265bd. 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/USQY51580216.