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 0x043041371d5c5ca82221650e8768a68eceeb3276b2ab554a212a0e5352d8a43d. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b90a1ea-f96a-40ae-aabe-c2a9dd2a9aea.json and https://artists.proofprofile.net/proofs/artist/5b90a1ea-f96a-40ae-aabe-c2a9dd2a9aea.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 0x3e82103925053cee53abbd793850ad35b4bc0b98b27df58050c94d6d02f07f5f. 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/QZDA82457572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0355949b1827978641ef7a298ab0039ef1a76b5037722152c14ef8e3583d4f47. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82457566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eda19452fdfb019758620f973e53671685f304baf61d922682ca432f4c9751. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZHN62467545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc152eb3307166b7e055dec157c58807c28f876a4ae23bdccf65c44edee82ab. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHN62467522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1305e5b5cbdb8e40223eb6cc1a97c5cf069386bf0c881223fde921ea7a09d8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2405117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2d8014fd65d4ff19948900f08f410b538caea609b1a670631bf1308c9001ce. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QT3EY2446556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd31d272d650b50b772e76d1c0b0430f86abde27d99b5b404398926f1ed918c2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZFZ22557154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183a2f452821b6f2e95a4bc64bed504c919f4fa7e769ba6be73f5228ea0cf17f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22557008.
Chemtrails Over The Country Club (Violin cover)
Chemtrails Over The Country Club - Violin cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97992434fc4ac67256adca37683df85a760135fbaaadb73f6c86dc59d243ed5c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42593932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f88813b5da5e979c812e5706e254d76dac5bfcd75351793125eb46944186e10. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZES82565219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f673987e0e3b389b7e44468d2c7e5523857709b9e9620ca586f001d4c8d2f9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES82565233.
Ezio's Family Violin medley (Assassin's Creed 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f1931d3193d6f987992d9180183d4e6fde1047e67309e8abf0b85c2bb6b711. 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/QZZ7N2504499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c55c7f45b301a4d936e1cf030aba4d9ccf59a1d69dabd4fe975bd30c8ff79b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZZ7R2514316.
Pirates of the Caribbean medley (Violin version)