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 0x2e07664c4c60e5e5e8935dd509538422e5b6ab5cee8fcbd5a4ecdbeca13a4ec0. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e9d6eb4-52f2-4a54-bf85-384ad8f6c294.json and https://artists.proofprofile.net/proofs/artist/2e9d6eb4-52f2-4a54-bf85-384ad8f6c294.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 0xa9de2de8486ad9e161a010cd59442649bd04ca6ae96fd7f3adaffd8a916aaccf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITWXB2071960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f7daac6063af2f7c3745306537402af8ad1dfba89356293edbdf28fc76a4af. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITWXB2071966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b278735e930fed7bdbe1a7725b35cbfbe6141b194eda017a16473129e9cdd05. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITWXB2071963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2851984651587a3895b06509fda54d46b23516a057412fe8e32542f8657aa7d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITWXB2071969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aebee609b03651076aa456918e73a26f01778cbea601059b97d512268103ef8. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ITWXB2071961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8737741aa506ea33774d9a6d9cb67f4fab4b3fd405210157d56d865b17d6577. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DKAZ71816108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff3fef79665eabcc6aaa3282dd7bd5c59618148471243c68c53ee790502acac. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM6MZ2445086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4b729abfb10ad125570567f786bd4acda635d83c27c3e855ef8d65f837fff6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6MZ2445088.
The Closing Shift at the Jazz Cafe (Max Essa Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2efe202e487d7bea4945676e0c63e3f7a464c9b3be55ad01f3e8488a793369c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/HKF801900001.
Themes from the Hood, the Cad & the Lovely (deconstructed by balearic demand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e18f57b7d59ce761f8dcc24a9dc73278f1d893880fb9efe841259c799686e7. 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/IT00G1671832.
Themes from the Hood, the Cad & the Lovely EP
Themes from the Hood, the Cad & the Lovely
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d666d11a2869b365d3d6cd49bbd5bf284bc2976e62661a6e14c93c4e76bf7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/IT00G1671591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6f835e2d695c3612a94644911b2795c11d42dc3c3f9c2bae7de2acc19d6e28. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/HKF801600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e884124228f358fe7a8594c4b58d2ba125d775fff22bf93747e45c1ba7cdd16. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK3W21400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1834aad331c412dcf0beec6bc97f450cc34e989ab984144a23bd1e696d820d5f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USEVB5500071.