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 0xa0ca196c380c467b01644afb83f13b967d59b6fa28c655cfbdeea5725ef3b092. 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/4819c3c2-1b79-44d2-8f38-f8cb7625c763.json and https://artists.proofprofile.net/proofs/artist/4819c3c2-1b79-44d2-8f38-f8cb7625c763.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 0xcee79d37caa140aa7c55d361266145b76c85533f45316844d0ac909793ac57f3. 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/GB2LD0901274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd43cffc926f1634b236998800f73d0355ebe09f3becb155a8edc2e37e7eea1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB2LD0901278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44f24b1d454362a772411c315c4b82d09942ebba19bb1e8aa31d9f47d7cd8c4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GB2LD0901658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27278b99d6f2482fa9550601d3ac935305d40e38554b68b64313c6518f553fd. 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/GB2LD0902524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8696e7290152b0917671bb1df3e4464d2bd95e42ae7eae4183018be26e81382e. 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/FR2X41763077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02daf333d260251ee8ac0f432eb9f6c3cd28159b4241da5d455378dffc735be2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/FR2X41763080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82da32ed0df8aaa1598891f433af2c61af242328084896f42f18233caa490206. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKQNV2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de8d9d160925bf7a8b090e4c8ae716fa08f873bd72ab3d57d0280e61972dbef. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GB4NT2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087d19fb89300e5cfc0b9941e7701c26c6faac6b37bbf8f5a5e4b19190e37220. 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/FR2X42279312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9f73a3d4db3e9f769bc83175badcbbed09f73aa7cecb051dcff4e0d8e7d89b. 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/GBLFP2047753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44c261ae5797ba77b14d8bf8316d8f100e206522fb2737e1702a86aee61802a. 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/GBUM71401603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bffd8b30c740d9c239528420ff00ffb878b1702169f097da31ca57e1381a29f. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBCJY1400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d89e891187afd1a22b36a0b2afb0c2e141352ddc598326c6767a5839bafacd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRS182080548.
In The Mix 01: Trap, Dubstep, Drum & Bass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd71854cac70b3ff747cfa63b6c86285c389ef7317b02896805210840056562b. 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/GB2LD0901128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c2f113389528e9ae3fd29f61221c9fdf20f85d0ee00d1a40b4cf229de4e16b. 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/FRX202086614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5575724cede828f70863f7abd4c5eb614759e3ec71d14794795c6955aa2e39be. 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/GBMA21854027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0003b96fc48430aced17f31337c8ba298aabfe9e310bebfb71f2fe3ee674c21. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBMA21854088.