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 0x43d9914cf21833cba1c2c0de4573ff5c4a833a1240ed8b0254aa7d8edfd9c2be. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a96b16c9-b663-427a-8fc0-c04dcefe8143.json and https://artists.proofprofile.net/proofs/artist/a96b16c9-b663-427a-8fc0-c04dcefe8143.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 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 0xac23fbd0b2a09cced7ff010669a5cf9267f225a75c25c22e6d4e3590b8925609. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USCGH0966598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c5d11c14d883c34148f59b6c38f58216fd9337aac5068bcb702fc7701d1d16. 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/USCGH0966582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53b8e78a2042d201abff79078c3cc4baf7891640c429fe470eee68509c24958. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/USCGJ0993597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6585e5df7ffe1181594c790c1ecb2c31e43cee1b9727600a33cb39c07905eb7. 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/USCGH0966621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf85a94ed0d5c568c352da9e11d5d9e16ee93b2fcf3a5b76f80afd9fedbeaca5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCGH0966591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba531c63e4ff33ea908de54f154ca2cf520248a1da14e376ffac7d0d7d06258. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USCGH0966617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7456d8951e5a135d317337698f3fb46c674c7bd18c805b2fe35d9456ce054e87. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USCGH0966618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac7ec7bab1d80953ebda2713c2f154cdd6fd3856cc5e2dddec360761769a821. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGH0966565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87191ca219649427c11f887440221c8d9b2ab23dfaf27285395fc947a5f496e. 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/USCGJ1097084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97a12194f7bd5cde0bdd533e02a1dc06e7a8230f7228c497b496bbb2bce5c9f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1097087.
Meditation Series, Vol. Two - Five Religion Chant
Meditation Series, Vol. One - Hum Dhum and Waheguru
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36c693afbc0725658196179baa6cc8d99a1b9eb4ef49b69aed1cf2f5230a07c. 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/USHM91035190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1a6615e2ed6d2b93b06e10d653447e131a3369e452ab9c18be456b558ce4d9. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/USHM91035191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b3ac7c5fcf73282f463d5624273553232f07d9dc541476998e9a9c0f88d893. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM91035193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f7b3c5dff21fb348acb8ee63900848735be3f4a88e022bfa39c8b005760178. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USHM91035196.