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 0x45213de702573fae11ece9c2e22e623f9f489a812aa0d69415a24b799194d960. 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/aeeb9678-3f48-44b6-b05e-3b18d35d402c.json and https://artists.proofprofile.net/proofs/artist/aeeb9678-3f48-44b6-b05e-3b18d35d402c.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 0x1e1d6b3f67111104a8685ac3c32a727adc8eff3ccd4bb69873248869558f7023. 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/CA5KR2447748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee81fb3022167d51975c0c6461564de8fd0c4fd179c08590e38c05e2f1cf24ed. 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/CA5KR2312091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e7f24086b452cc4c34d7e00423f3c89236f9b7463aa9871983ddaf2de9c59a. 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/CA5KR2447749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276dd51a7756fb362d2289c72137f32f7011517580f29c8904a27d938f14df32. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/CA5KR2447750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75542b67f20363049d4c4048d8ccf8275ef7503a5ae339a858d7178c0f10a054. 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/CA5KR2447751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a24036015004680559469790beca140563b4b03b50391f798daa8d0494c34c2. 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/CA5KR2447752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff76527031a350ee29162849ecab65b8b1925f26bee3e7fb3d619c3b6d47848. 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/CA5KR2447753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e7fb34a2c31369b68e84e7dcf0a82a89399b3271cc352f36e186db527c9149. 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/CA5KR2383167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14c1260d099536d346a2282b9fd9dec26cf4c62a557ab2a4883a455d3c5818d. 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/CA5KR2447754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124b1b8bd7cdd8d7866f33abce57e5a6967dc12916c3fb7319901c29cfc3763d. 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/CA5KR2296767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7348cc8250e7b440ff47bbea070a669dbe80775f189f879f3c3877e2e643882. 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/CA5KR2447755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4b876164b982290feab8f65a4607d0fd9449a6f069a0e52eafad794b7fefdc. 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/CA5KR2447756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cecaf4d5ceee0792549e0214bec11ab456c21880fc9b2cea3589e238ebb1ad. 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/CA5KR2447757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1d6b3f67111104a8685ac3c32a727adc8eff3ccd4bb69873248869558f7023. 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/CA5KR2447748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a24036015004680559469790beca140563b4b03b50391f798daa8d0494c34c2. 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/CA5KR2447752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d84169f3dc6d73658b63fc092ff64cb74890383de470f501fbe476ae0031b1. 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/CA5KR2437486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e7fb34a2c31369b68e84e7dcf0a82a89399b3271cc352f36e186db527c9149. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2383167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee81fb3022167d51975c0c6461564de8fd0c4fd179c08590e38c05e2f1cf24ed. 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/CA5KR2312091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c83a22e06735d66b6ee3e2db4e8ce758375af6ac35e52dc205353e755be005. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2216115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de475bdb35e785ed0c996b49f3855ec180241cf2e371be906bf2972dd7de7b2. 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/CA5KR2200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575a6079d42f91426d94b9c651e749e6f6e422c6cee3628a09aab47c0939d0bb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f22f99201cd61c7fd9816871246c82b67f3a4a5c53d091b5e92e32d37a2c18e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd514c94a28db634b1003f1fdc65a39a533dd257d7471c133d6ff7f3505655. 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/CA5KR2200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecac726a57b66edc0d44156f921fef80d1150df05da68cf0b58e1661e52d19cf. 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/CA5KR2200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd514c94a28db634b1003f1fdc65a39a533dd257d7471c133d6ff7f3505655. 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/CA5KR2200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575a6079d42f91426d94b9c651e749e6f6e422c6cee3628a09aab47c0939d0bb. 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/CA5KR2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4341073c17a0141ed475a336aef1ea95bd08fc90c40ca965c87fcecee24ae2b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR0019003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd082f89be77ff03be0d79c96cb20aa969a36e0b916bc9299e91ef1257954bc27. 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/QMD7U2102052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0f23f5ad1e16fdfeb920fd2a766f5ede23bd99e9f1aaf41327864e8abcec7b. 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/CA5KR2199815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2992cde698b35a7dcb4c19f78959b8a02a1f40f7bd587529b7a63ea7c9bb59. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:23:36Z), 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/QZMHN2053693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001ab78de5ec9874fc5c5f3cd004237c11a360be928c7c15ef3be805e0ff6fe3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2161491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730523983c43e74804260b3b9323c563e2025a7b2c1256447e5c382f33931503. 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/CA5KR2149543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582546876a8b56897632b535411fff205a627818affbd07f64e9ee88b60826c8. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/CA5KR2128087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b55c3d45830d551f9ee34be71b13179342b4d43d304bd50664e24ec79ccdcd6. 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/CA5KR2092061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3266a72937a72005321ce5f92faa412f96a886b4c73447510e5fab8617fb2d67. 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/CA5KR2092064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac66b50a00650b2a69593d769debb2337969540f69b91db7f7688d8bbfb3b9e3. 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/CA5KR2114310.