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 0xd7832d931bdaee1b574f8f97ef55e77ce96ff66d30172933da4648e2981c30ae. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ce91e3b-3cc0-4760-9489-c29e9461d891.json and https://artists.proofprofile.net/proofs/artist/6ce91e3b-3cc0-4760-9489-c29e9461d891.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 0x60df257503b136570b582d5b19fa855fe9eb4da17e0746e7d561869a2fdd8923. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZFZ42365845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1234bc8a92c63c4dff42bf3769d7059fb6a914c814cee4a67e26aa9b59ed2273. 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/QZFZ42365847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574bc0a7b1bd36ce4cdc3553034d03e668a5847964abcaaf1a01a4a36b1fa595. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:51:22Z), 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/QZWFL2364422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256e121e4bb880ef794ef1eb3c25abcd13364ae6ec7d067f8ac2b9889acdee52. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CA5KR2437539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12505706d9cd37690b019ea4db6b499d57b4b020b2542e0646cd7a4610c8c61f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA5KR2437542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5b23dec44e058ffe18448b370c1abe98c20102d59c9238046c9dc6d21418fa. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CA5KR2437548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1171168e51e8cd1f5e980e7585700fc274b43a4ba9d09758fd907375ef7772fe. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CA5KR2476147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b33f318dd2b0cbd0dbc2252e40554e70b5e4463d1a015c3c94c9eeaed21c63. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/CA5KR2482671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a12a287cef4a5dbc33528d009e07202a526e556d8699aebe3213215edb7a293. 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/QZTGW2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23e2923edc157ecb10604be7c5ac4ff16fa1fb8a9ead397b635031ad3aa64af. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZA742423492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23fa947a8fa3406ac83300890bd1b0ad20756b3ab7004d112be401853ccee1b. 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/QZHN32584742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed95a36657219ed1c7b9581e3ca0d7e72ed303e752352f62b2f206efabbf0b. 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/QZHN32584743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebee264aaf6bddb3ed600f9e8a29b5529c2da4eca4a4b34cb8ff93abf8140a46. 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/QZHN32584744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a9478b438d406271286c6aa4f3a0c82d37292d750e49b735975683bcbd66ae. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZHN32584745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0ff59edf0c68cba64129c66227390607e9b7e01ad30dc8a30bd53f60560dec. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN32584746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318a5275af38c9a8ed56979869bb8c4cf7e5a075de6d348859f7bdc14179dd17. 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/QZHN32584747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4a0ff1a22d65763229d764a827dbd3253b67df809116e65d9de26eafa39dc8. 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/QZHN32584748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283bd020c4f2bd5725c04cfbb91c012ad85064de79b0e2aba3fa008e4b6f4894. 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/QZHN32584749.
Twindrive (feat. Fo Guala, BBG Steppaa, Dusav)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0c270f6783d41387f889c66fe14a21312ad442ae098fb95b4e6c8f90ef3b8a. 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/USWB12302329.