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 0x611e5d4fd4ed080177f7635678311d584d1458eb743b92458030b2b007cc4cce. 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/6759da61-90b0-463a-936b-a1a063144475.json and https://artists.proofprofile.net/proofs/artist/6759da61-90b0-463a-936b-a1a063144475.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 0x04de5f3f49ce4bc5d43c9ac32aafcb9aac05988dfd52a829d25376ecb8104ff5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6N21849415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416cd3e20f33d123e2057570172e2c057ca01d57a7bf7e76f4700592dd825bb6. 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/QM6N21849419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cca95c7efc24c1c3eb9bec11b2b4a69c7135a8b5447f15e17470f690ec93cf9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM6N21849421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60874b9ee7d9f1522d4c413a3b3c8ec3217c6625aa5792caebc46e4388a5d30. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QM6N21849422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc3b995693cda4c0139860e0b9264d1ecde11a068d7ea851ec1e03c82f125c0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QM6N21849424.
Pachamama (J.Pool & Steffen Ki Revision)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec1766ff563369003531b2f87f04825de136ff87e2e9ce9d460490c98e79e17. 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/QM6N21902688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df5227aa89392441055a80037590a505cf9492378c84dc755cacb1e2d73262c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QMFME2076073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa275a358be0020f88afab40c896b32b40a09e42adbc36824324683dab3ee786. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:04:55Z), 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/QMFME2076074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7c3611f9abc720ebc0bbc3f421a35a9546133c59b0aadf0a30fb0f75d9ebeb. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:06:36Z), 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/QMFME2076075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ff1f09136c4bcf74610fc6daf6a3e2f76a02f03831615d6ab958383be84f20. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMFME2076076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61c1e84dfbad3336f24285e2282201ac139a27e29288dbaf159f11f6b4b6352. 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/NONIX2303020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc276ba428cb70af92136a1c9e111dba0ba18b2e2de764abc68ee620d39a2171b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:29Z), 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/NONIX2303040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513aaaffc9e1bc81ce97bb59d4fb95cb4a1e99ec75d588db40f065898b1c7a6a. 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/NONIX2303050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f731648ba05f5c6c48a11a38bcd2bf661bf0acf12ce2bfc66e2f1e78a1ae99. 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/NONIX2303060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1112a0aa850ec76e7237c1348bdc22c2bc19dabc25993cfeec09015c518bb13. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NONIX2303070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3248aa0316e9063e54c98fc79cb116db715ced75094175400d379577ed5dcebf. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/NONIX2303080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1e4439714fc8d9a65da0502ab22cacd0bceef956e4085dfe555e15c1c204e6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:01Z), 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/NONIX2303090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb159d3b7f6b3ba0b752d7fc1cca1b0e063538d402f227d6d95994897ac8f28f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/NONIX2303100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e5c2b59463dd41d450a0a6f20d3693c07cecc80f6386451991fd301a25c774. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/NONIX2412020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22da175d8df17a7989d1dd4ba117a8b7110e27badf859568be3643cc7e8bcb0. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:57Z), 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/NONIX2412030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d26adee7a0f3177c178b3f550dad5be3de2e2f48c863991f0a0f6b1f7bb805. 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/NONIX2402010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f17703001282cc2b3093f6b4f5f747880e042bfc387f61cbdd5af883c35899a. 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/NONIX2412070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f8aa47de3dc0cecbfe6e895a729c875c1f7a3ef53b1f2b18bad89bfa19e65d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NONIX2412080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fed8e84c5602f926f57c7d3b53d7080db4625bc3e4053b00e7b91e96e17006. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NONIX2212010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3bc22fc8cf98ad9d1caa304b59f43f29e89933ae9b67686b3e56d274d614bd. 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/BCVO92300068.