Darts is a competitive sport in which two or more players bare-handedly throw small sharp-pointed projectiles known as darts at a round target known as a dartboard. Points can be scored by hitting sp
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3425c561b4f77e94e84b86d79bfedb3e049cc1f11ada0d0fa0f73d9ae0ba0205. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb1b5344-3c1b-41b3-89d7-1d6d50712ba4.json and https://artists.proofprofile.net/proofs/artist/fb1b5344-3c1b-41b3-89d7-1d6d50712ba4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3964fcda11804353ce4a52c4ceaedd4e145874491cfd62c8575514593b6af58. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBAHS0500632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602813cab2cfe983191477cc254521b1bbe1c756deb7765a18d25cb5f7acfe0e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:59:58Z), 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/GBAHS0600435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe7005eded7f390de777ce855a812dc73ce93a0dc683ecfd1d7b995485ee408. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:24Z), 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/GBAHS0600436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a913353050766f3c31d9037d9644d351f1b697993d2c49322b09e96c4f163c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:24:28Z), 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/GBAHS0500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317da3bbc76ff8f01251871dacb6db0b1d66611cadd12c287012a9e382de4a00. 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/GBAHS0500629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53539d2f194337b3a19e85a0c26776a92078d960dee07860262d8eaef9726fe2. 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/GBAHS0600446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4609c7c1e7b9a81b7c46f77f7e53effb55f2d82aace603711c21a3f17de9f852. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBAHS0600449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc857926fb3570de926607d39ad58874fa3a12b59c5faf29dff29938c4d37a430. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBAHS0500621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc957ee3f5509ab986242034d514ab41b1ba757b8b8008c5e56996cab3f20b630. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBAHS0500622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8348d6df5ba030c5556af40cf6bcefbde14824ce700d5e2590531f7980a753d. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:38:36Z), 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/GBAHS0300861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be193e611dc150f26fce0c0f14e695affaaf814adb87abf35661b28f66aa6b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GBAHS0300604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb682dd1ef02253b4a1e50a266e1e8541ccf3df1a5d0590ad6d657e019c74bb57. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBAHS0500618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d5b6e4605ce632933bc8d0050280b06424e22999b809e2826b8595cd8fa7b6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:13:05Z), 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/GBAHS0500619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1f7849ca1b38d6568961d623b427d3201f44e9540c8f2978cc783a91f07c98. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:55:23Z), 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/GBAHS0500620.
Dig This - Rare & Unreleased Magnet Recordings
The Boy from New York City - 1; 2012 Collection Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c5e3007d1b0b7a5f9704292881f49237f56d6ff757c059d0b26db1dae8a147. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAHS1200456.