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 0x2f0f20c94a4a4552a024ee88bfdb6bbb1e4e3cb17a714d0d987c2a8792aaa1b8. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dd2dade-7a19-4f1b-935f-a5cf7fa45980.json and https://artists.proofprofile.net/proofs/artist/3dd2dade-7a19-4f1b-935f-a5cf7fa45980.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 0x36f9cf695638c5e59bc8a6388bafb818cede361d78f3f176db5e92de79b65ffd. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FOADG2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afce7fef96da86d790dcf6765939101e8595e55dc736690d01320b10f9eb7a9. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DKBCA1603702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0724d12029dd79758d1517386503630a148cc4e16c7eb81550dae44d08c96488. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V81615657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709e0497a83d2f4cfeaf30c161e3ed7e8c86ede8fe65f2bff1fe0028d8e16f9b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81615665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3120fca46f5b23cc8906db1d3233efa495640d308392d858a997498cf1912c. 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/QZK6K2486008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f94f3949f14edd7bbc8806098fe1353c4bc67c251623951b7bf937746155ca. 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/QZES72452407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0687a3899978d52170d5fef445b2d2b863d7f8fb611a702dff686347e02ee767. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZFZ42417874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad6b967457a154cd0f6f446bbad259326e26201fef1cfda8f7dab8d0ad63522. 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/DKBCA2301602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a557d34f87fca09b240a62d61ebdb11e6900e050347bba37da1549e15228a3. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZHN82357597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5067f864de638fcdb3f756b7afe47fa4be7d7098f0854872708ab72c653bf07. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FOADG2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbc823c14996db0d7ac9ee5ffe55d6aec1bfdd69143c18132f1e4e323e07701. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZHN82058261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9151ef2179eb7dfc8e679697f46c50ed4f6606d6851deccd1093c7c764bf91d. 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/QZDA61871390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda68de2ec2bd5d22349d75fc7f7823caa4ac3645538c9aa846b0b4b877c96add. 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/DKBCA1401302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4068fe6853eb9214bbf9cac87babd2c7c1a63e35df41d6180c2accb8c7ecd2a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DKBCA1401301.
The Sound of Independent Faroese Music (G! Festival 2013 and Tutl Presents)
The Sound of Independent Faroese Music (G! Festival 2015 and Tutl Presents)