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 0xc2bb7f9faa3741650d34ffc1ecf19e2d49142abbfcd7738a0311d87d4566ef92. 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/eade273a-acf1-4cec-b0e1-1cb6c68d2042.json and https://artists.proofprofile.net/proofs/artist/eade273a-acf1-4cec-b0e1-1cb6c68d2042.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 0xbfe2a36879103160da530270976bfbe6c6032ef56d4bfbdd273d78af43c9dc02. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TCACN1614599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb1192918be2bd83f22b2c3bb0b1c88c8b0def0bc3bfe26f720c92b7cca5c0f. 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/TCADD1763362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8fcb4062557fc8a3e799482e858281065278ca8527bb8287d2d8b455bc210e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:17:25Z), 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/TCADD1763369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82902db16daad14c7e22db6ce00911567c9572db4fdb4b69f61ac6e1525675a3. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:52:39Z), 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/TCADH1778394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d438d902f1207efe6bfe1fa6f5a15f0fa6f0fa8f9caa0143b187dea643700. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCADH1778396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1068e20a23f42cc8e2fff0296735a22654966ade0ffad89e0e32e98202b06127. 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/TCADH1778397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2617d7d1c26aa6290e2a80d44897f42a2b3c9fba95d72a3ffb8ebacc664f132. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCADH1778399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1c1d19bb50638c290b25afb4ccd924799c1b5d8ab4911b466f1d40ac3ad97e. 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/TCADQ1801312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba43138c1a641e6e22a6b08a56841bd6ca2d772f2e29101b50ae0f3827343903. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:45Z), 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/TCADQ1801311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913d3a8ae3a8a54a2d2233137f7acf01f2da5d2d5532d3caf5d9700529df1886. 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/TCADQ1801308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9b542b9cd4c9693634041df876a6c3547efb59a55b4438ae4ef7086518ab06. 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/TCAEG1922255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865cd3272c8bdddfc7e1efb4349b0c7f2341e8e674c6ab08b879be93070b2b9d. 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/TCAEG1922268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676998e3f3055ef3526ba755b2fad0ae6740697721dd41c9802edf447d7e6bc4. 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/TCAEP2046607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62332190e101315e15b953f7a9f3244d55409db8fac051695404487a4d0b75aa. 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/TCAEU2019862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bde995b54affff9a9fefd7fbe9beef2bede324ac1e8779280dd1e46f85beb6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWQ2025407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab73bf207e8370b420d26ca708e595c15b9ac5610c12ee295fc4d3f354968e8b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN52149792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bd43346e9ce8cb0a9e432c4e1b73993d573c4d44df12843db44c89285b85f3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN52149793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ddedd0eebbc295e46476379eebd42b80cac8d2655aa87423acfda871515ad4. 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/QZDA72276343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3488a162138af912e0f4eeb035eb6e808b6bda55369d1d17f6fa6df456e736e. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZK6H2315878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4413a67245a1caeef312e8b7bb9865e078bdf8cda6b37e00467bc1cd5148346. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:18:24Z), 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/QZK6G2302995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bbd4764b6f5c602eb4c6c6561367095e44a2523cc1460805dd64236add4ecd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6G2302996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0291806b0fe51a735738fe8633ca840b8ebe7a3b681fdcf05c9c2b430c218b74. 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/QZNWS2403548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6e59ea1d08f289a3507a61f8d9fd2143fe29a5ab763f87310a11c350b069b3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZES92114585.