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 0x49e5be38821838f8716f660f94de98735977651878837ad2a7f8c832c5eed17b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1788e821-471a-4fe7-8f1d-4ebf12687e93.json and https://artists.proofprofile.net/proofs/artist/1788e821-471a-4fe7-8f1d-4ebf12687e93.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 0x603e5b14dbd63ea73e018c19fef47c5da691a41130e94cb684990480e0566434. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUMEV2451168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd57b97b90ac14a5e8831ae5d91e23d7ffac36db208c0aec463af62e928354e4. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/AUMEV2451170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4c723aec76a8704e5fee78043066edea17c3a449d44bdc2f8c90d2a2f5347. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:30Z), 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/AUMEV2451171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3310494806bfd3527d3bae220c532598e9e765e32999cf10ce68f68eef1b332. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/AUMEV2451172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759c16963909cf1ba0487e14d99c3381c964cc8f9028dc657c3261c96ccbbd2b. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/AUMEV2451173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1eccf77411aedb2fd494bbd04edb1b055881a666a69cd774385ac18c11d363. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUMEV2451176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249fb1f6119c4e6e88da3f32054d070f8842c9d4263cce695ee608dde634dc06. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:24:26Z), 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/AUMEV2451178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fa75c617b00eca187e64fce6a447f0f35040d9755ea954344783915c915ed7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:33:01Z), 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/AUMEV2451180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5666c5e5fafbca717d518657f8381ffead03a9cf2163c52daee85e28a61a31bf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUMEV2451182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb68e3aea31843c30acad744533a5bff82bec668ac8b65c9508771e0446d083. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2451184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52adff0e9b7aca57f0153806aac229a3678c2f246f84975d74ca7719d52f694. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:52:44Z), 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/AUMEV2451186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8624041ad545495a27f3c32330ac50a30e53bbb403e951c903c5953873cd208d. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/AUGBT2416661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4bb23db15ed2cb88215d8a14a79888d9d5d868f3575fac8c72453484a662e0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AUGBT2416706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2113d38d8d5c2ae9ac6575f552abfd8f9ff54d70dc136520e509a059354ac3. 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/AUGBT2416708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead90da51569d61a03aab756473283d52d458e12932c4046cd58558485d564b8. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/AUGBT2416709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d746614aa8615bce7212d7e0b9241c61f0fa4bbacf65b52f1eb660e2fd90bc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:23Z), 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/AUGBT2416711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d1754dfcb34d1532d283235543d076ba4df5aeefa576fd0a3bd344ec8569e6. 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/AUGBT2416716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75671d7c500fea2c0b7cba4d7f3037ca6b84f361fa5765da586f3d267c7d5a40. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AUGBT2416720.