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 0x66753da4a2848c0542edc73620a39fd0bd11e1fd4c8af223ad4e99e542f24626. 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/b2ac519e-0de8-4735-ac86-4412f17015b8.json and https://artists.proofprofile.net/proofs/artist/b2ac519e-0de8-4735-ac86-4412f17015b8.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 0xae0c98610820dcf0b81f6938138c5cf5b7095452e7d58a3efaea2f5711dda470. 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/AUFF01400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0730bf5be377343e6cd1e47da2fc70f4dcfdcaf6ba4f60f0bcff4fc1ada0b6c0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:24:01Z), 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/AUFF01600844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2747ae24fb2a1d6b1d0296397d1aa44362bfa51a4640e7ddca7aff294f91c249. 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/AUFF01700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd30916bc8c8b665539e34b3b9a68db797df15f233ca771b99485ce5b23375e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZK6Q1911391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200554806200f838887dbf3a04f56e7bd521ce74742d8f22d56d53b120a12005. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:39Z), 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/QZNWX2269451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1efcc7e987ae846a58ad66636caa51816ad444c601cc160944391de9a1685e3. 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/QZES82493198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a686917c41d70f5e7a27f613e9b555cf465feb789c46fa82e83328f6d8547f. 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/AUMEV2515071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0f8a9d4cdc083e4c194f93a76ab30a223354ca4b50145e2c6d17fd29bd4007. 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/AUFF01900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd560639c1147c3ee512d6276c41ae875bad139b83b717576907b414e076617. 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/QM24S2001066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04a1d52f1a36eab74714a157da00e041eacfbafe90df2bcad1408f61195a151. 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/QM24S1922484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c952eb90b5437e582934a829c450c47c93ff724a2079009f9f6a020e194cfe. 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/AUGBT2342156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09580dafe49660309b6d13a2cdf1f3771abab69f30c46e7625eb8237effb603d. 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/USZXT2250590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e3f43dd1c19cafa95aa0544abfdcb69c1256f636686c18f6619a4c7f82fc83. 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/COAB11900218.