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 0xfa3e8cd3bcc0942cc745d9ec8fb3beab2da890d9fa2c3decb2129e9cf4816847. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc3dee6-094f-46ca-97a8-f9387f6de04f.json and https://artists.proofprofile.net/proofs/artist/adc3dee6-094f-46ca-97a8-f9387f6de04f.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 0xe70b461826c68029a2cae4edb6bff10b14618196efc457ebc27fe12656ea08a4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZDA51857797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66599797b5bdb44bb371c7c3a98575a9ffe9ec36d6bca41fc337a8031278eb0d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN31941799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070f16ccac66b3812ac5ff8acd3f95669ef0d03cc81eeb9b42221397b330bca. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTAT2145533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bad9b5efb5e02bca95f6ee3580520fa24cd7d1dabfb45eb4c4a780d0bdffeef. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZTAT2145534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa84b405c3bb704aafb8ee7428bc2c3bbffd97cf22ee600d1cc9c900c6e6984. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTAT2145537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154a7d68a306fcd7a1c63404bcc4549c4e37472fe3c4d46b80ca3d48049b25e5. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZDA82255962.
comfort noise (Music Inspired by the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf917d27af870395dc3f554ee61eb70c422c751e41387851845f4c19c8fdee174. 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/USA2P2232931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ea69b23453040cab903836c7bf65f998f2eecd6b62e4b201d7ebea133097e9. 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/QZGWX2160048.
Hardcore Will Never Die, and Neither WIll You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e160665e89e8724ba0686abf3dd53b59a94cc9934cca49c472dd35ad77eaa9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2313294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023c2007d8e8d854fd87ce4823767062e2344ade6b9350fde9463f3cbbdb012b. 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/QZWDE2313298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0835d3994d7d9cab78b79c14398e9a1ad78b0cc12e1078d3e6355f4ae1bad9e. 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/QZWDE2314096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9616f5d692b3e5517519107f7b36023a7dcb4a58a9277b40f197fc0fedbf9e8f. 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/QZWDE2314098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe625c97f64e407550044f67e074eb3832f9681d4dc9e07ea772aee92d142924d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2314109.
They'll Just Love You (feat. Danny Elfman & Sextile)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e0732bcc0a2ab0516b0e0a87c45fcb1c99fe15e68a6c0a4f95ecdca4cca373. 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/CADE72400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e0732bcc0a2ab0516b0e0a87c45fcb1c99fe15e68a6c0a4f95ecdca4cca373. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CADE72400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa256f94f751fc5a5935be9a0d3ac57c00fe7d701d736515f03034bcc3a3b05a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USAT22000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68db35af1be59b77ce83e384303cc492e9c85a9ef8a55aa768ddaa10e1347c. 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/QZWV32495101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b6a93f59cf0325aad1dbdf9fcdb710c587ef60c198493187af1b8027eacdc1. 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/QZWV32495184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5051002d11b887c86c37dfe409f68ece5256cbfa8f5daa57ca1cf3c83cdc5dbc. 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/QZTAZ2219081.