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 0x6465eec7677e36307484371abcce141a506b6ff0a69a4ab93d6bc63f3c5798cb. 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/6d3f3f2b-8505-45ad-8c03-cb15942a3035.json and https://artists.proofprofile.net/proofs/artist/6d3f3f2b-8505-45ad-8c03-cb15942a3035.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musique de piano pour ballet (1/2) première partie
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 0x10d8a6919df3b1c7fd71fc9e997e976f9a36341f596ba387315be05cd68d8f51. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTAX2274791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c98312aa4c126cef3ec33b8d0fbc001877d1e1e64fa8bb0ac31234ff58e975. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAX2274795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961f68b7ab981e7b994560321ee53d77c4541f1d15024c31ee2b2efae1b81677. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAX2274796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e3cc708e11561a85b89e4065e86e20fbeaadf621c43d352602c934e5d56e9e. 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/QZTAX2274797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ee5f4c313874fc54dc0dcbb566680d385e318169062cadb05ac9d75f5e47e6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTAX2274798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b142b3229b64f353cc9d9950a51656491b192348e777ec95760b0958c679c04. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:06:06Z), 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/QZTAX2274799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53242156dfa1ed831544056da825201f4dc5ca0f3fbd43cc014732906e557e59. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:48Z), 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/QZTAX2274800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a522ece7514e4381f7c37ead271711d80b6cd940f21cac559f85fd310c6158. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZTAX2274801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe421cb331e7a2b73e2ba2a9d9f290d37c674abbb03b01d21c002d3dbc7065764. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTAX2274802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9178d6748ba7e7d5786b41b88391a76c55468a19df8417bd94c4db8db23b4bb. 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/QZTAX2274806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d31bf24272714b350358e3609bcec7e8e98d28da159343db096e8b41215f93. 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/QZTAX2274807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cdaad71dfd68d1660686e1cabcc4381153ee3dfb67d0e1d534e407546a1691. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZTAX2274810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83545f3bcf1880dff15fa32e08ef23467ba5a0e132535ba35f43ac7820871b5b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAX2274811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98bedd430dee8c496c3aeca4236f4cff3694220646d950f9ec1da18a48a1236. 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/QZTAX2274813.
Musique de piano pour ballet (2/2) deuxième partie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c924f6c72df8f0d4559a10fe5d6cd899cf9deddb5c8670a1da126e80001f97b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAX2291404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62add78f3b039a1a1dc1e69e8bee6c0a678b98ae5bac7424860d3a68e2d3170. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTAX2291405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5489ba5869994704cb623d8d29b456647842c19fc35cdced2591f8aec852aa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:43:40Z), 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/QZTAX2291409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909363654357d9d8a474d577516810db984d2c1208ca5a61349622fcd6078359. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTAX2291410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91f4035758a4b10414db29dd39e58a79bb166d2696f10fd4f71a16ff614b22e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:10Z), 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/QZTAX2291411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b92a662f3e7c3551f2f21402865563f7a8b78f6b7abebf711e8251218d96cc9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:04:43Z), 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/QZTAX2291412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e7a21a5fb7622ce08776b2d9f1f3cc51624ace67c83f018701d86a2b311c93. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:27:28Z), 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/QZTAX2291413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa1492340469358243a2bfa641f4fab7d45a61e8ab66439c2414e7b59acba81. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAX2291415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3e5994a133c81fc403c42ec3f4100080c6128474d8f0c3a2de7f48ab751adb. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZTAX2291416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86345a0feb3702ebe7fb024ac228005070479dbaf490a24dfe399ff8c9a59674. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTAX2291417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cf9172ec1f3108ef1b6c5d2a2c6769f69500c615aaf96726e19eaeaaf89960. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:26:50Z), 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/QZTAX2291422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e1cac5c409aefa5ecdcf8ae36f99e456c8b0803900401e5809cb73b999f059. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:49:16Z), 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/QZTAX2291423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f74bebdd7ee66b721de79adc14f1503033a6189719956246cc9c522d3384f1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZFZ42475903.