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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67610f2e1c2ff786fcbb5244a1836dc242f0d82424a5fcfc2b20dd9cdad191e1. 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/5a09e3f5-676c-47ff-bebd-acb5c0119bcd.json and https://artists.proofprofile.net/proofs/artist/5a09e3f5-676c-47ff-bebd-acb5c0119bcd.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Please Don't Forget Me / E Hine Hoki Mai / Le Temps De T'Oublier / I Can't Stop Loving You
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a1bb0a1f847b5dd6a4310060d79d261c5d5dfafad3309e9cdb2a3493182c8c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02200080 — a six-check JSON result.
I Love You So / Tetufera Ehoputu / Matamehai Ote Taa'i'a / Mai To Ei Inano / Changer De Vie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63dee3bb6695bd0ee28f6901b1efb9a7eb5f6ee7eb7223748342a7495ddbf86. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02200082 — a six-check JSON result.
Avec Elle / La Porte D'en Face / Vaihiria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10475ce4f2d76bc99e7f3e0531ffc0e14e91ca49a823aeb4495779ad91043155. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02200084 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25d5a47481c6ecba44fcbfab3cf0c1942c004ec8082a065d51849812f601f4f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02200053 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5218368db9d5bcff877d01d42c611e432b3f77d2b4c32119dc38221d83e4ea22. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02200097 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5169d55109a3e60ff68de466c86edd0adae2d637dca68204294fbd0ceff9593a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02200100 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1c0ecb8c7c9eeb485be35640213999ea64ba3d50c849d2574db548fae8c830. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02200101 — a six-check JSON result.
Toi Et Moi Contre Le Monde Entier / Hawaii / Maururu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c935addc270cc3018710b8e1d8f211faa31c465d11d603ee7647cb7e50b6a82. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02200104 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94474230799bbcd0194504515169bd185af2506065143f3bb08f9b1b2f30790d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200274 — a six-check JSON result.
Vahi Ateroa / Ire Ae Te Pahi / Taime Haumaru / Tiare Hinano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e7ea28e8b7b48cea9f4c52bfeb2395dc51bd4602bf0c4f238d4645ac1aad7f. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200275 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd66eb1164220d4898c76eca893e447cadd9887f6366d8255a4716f245c5add. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200276 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b1ab1c8bc124e8e368c3c1620b2154391332f76e8c28cd03b6d9241e8f4927. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200277 — a six-check JSON result.
Vahine Kaina / Ua Tangi Te Kukupa / Kaina Ote Toau Toku Henua / E Tamarii Otare / Tamure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7b2cc6f7005f75595ca304d559ccda31867b755f4971f6e6a9fa7f156d2170. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200278 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b2caaef35c48800442ee8b4da553f5deccf5d981eb851804244e6f098b804a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200280 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7a7d8144163837829e41f8cd0ca0fd7dc286ad5fd13a390e106bb049ca8b32. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200281 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551ff28ba32dc8c2070580fe88312f916ecd4688279b75175cef0cc702d85889. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200215 — a six-check JSON result.
E Tai Purotu / E Mata Nei Au Ia Oe Tou Tama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88cbc7d0b742ed5c694e8b836746d36a11587c22f423b33c505edc0af08045a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200217 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ec5dd0532eaffcad193639a9359542b751080e9326669336ae3eb829d6b621. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200219 — a six-check JSON result.
Topa Te Mahana / L'Amour Est Passe Pres De Vous / Horo Mirimiri / Maite Maru O Te Ata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71228d4dfc92708de12a957bcbec18113b251aa917172160b44f365c6e58fef. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200221 — a six-check JSON result.
I Can Never Let You Go / Danser La Bossa Nova
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe792012608a5024d8d7ca6994add311c428472d1a11391e1e7d87ae6b7b84505. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200222 — a six-check JSON result.
Mama, Mama Ite E / Taparuru Noa Ra Vau / Mama Ina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab2ee6436783936398e27f08c5cf37356dd22c3fd7695386b6909d61a1a41c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZSA11200223 — a six-check JSON result.