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 0x8c14f7319708ed73ada4c11114c7c05bacc32499454e67720e57e785de9641df. 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/6fc7ff61-9c60-4297-a610-27259e108af4.json and https://artists.proofprofile.net/proofs/artist/6fc7ff61-9c60-4297-a610-27259e108af4.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 0xc8ebb3266ecbb400e397576353a490591742a7165c43d6ac0b9f78eb7c0d44cb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USCGJ1865703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb612f9659b556420a6224a92cf655444a0cea97ce6b3bb74f8a333316370a9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ1865706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd065ee6420cb8cebe95632326293853eb609a9ce685054ad98d50ee3392fe7e9. 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/USCGJ1865709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7713b1a2b95d03eb2873922360b4672909df26e862b0f52da2ecbe4c93e2fd. 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/USCGJ1865718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3607ed98926535ae1a21a80ae2bad578bd8e1fe69cf0a148537a402a7919b4. 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/QM24S1925303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594a01d7c540cc81218079ac81b953e75098ccf8a9faf74cae9e26df72cd4cc4. 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/QM24S1925304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de871446f9f766d34fb40e78797ddf5d25c5387ceca49d38c6fa82ce96791df. 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/QZNWR2174809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602e78d60e578bb2ab5c8ff440724ef18441c6c8e901ce609a78890335e218a2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:45:28Z), 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/QZK6J2219829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf234baea894d965542a392cbad657fa50a4f6889d60d3f4276be7dbd081743eb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZPLS2258542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48ac4aa89d8e6398c1acce68dd7bde969e4716f2dd425dfb20f76fd5b6d71b8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:48:59Z), 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/QZPLS2258543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1345764860e9c593d53d6df3eaf38289280d40f13e943201ca8ee4db49cd7b9d. 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/QZPLS2258553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19be62ca331f2bb042088216ef79f2067069471e7833f93f501a79fd8527689. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTAT2412415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea21227f782e71adf74c80c872aaa02b1cfc6f1f0e6ab206177c10bb4e6e1b99. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA72570979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f8dca7e8e7808b5b2b1b0ea3651b1cb0f028a09b3af506fbcc30adf13458bf. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZDA72570982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e3e90273810740bf4531a31515fc6a5dc656af48e20f0e338789c297154997. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:48:45Z), 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/QZDA72570984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97ea98561582bff78a8c603c093fd1f25dd0897b05510208227c62ae33af622. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZDA72570985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57951e9e844810cd5a0ad32e909f1f1fe70e479820010b140780997cc28393d3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA72570987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f13ceefc10b0edcf9df87456b5f705824b1040f0b15d983ca19948395d499c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZDA72570988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cafe86857372f7b60e2827216fd40c8ce01b7e6a9e7df83b5aabdff94c91e0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZDA72570989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77430e14528247fc436a6fa3aacd8e563289d3f29cfa2571485a1e96f6e933ed. 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/QZDA72570990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14b83b534c8589d6b2ac2383a4f01c73f32c6f7cfc39c8ab7a0d63dfd2d3bda. 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/QZZ7K2594663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6b631b6217b21bf5f788fb828a380aae867f4d42284da36c89d98f7b46a035. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7K2594668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c3871b4e9e6a27d2e36fb079c119bade1064c0c3c24fbfbf222e265d5dedb. 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/DGA0M2355741.