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 0x3ff1d80b23fda2d9953cd8c77ee9de222d50af813fc62f07460872a9478e6cc6. 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/fbfa332c-b633-4b75-9077-395862080288.json and https://artists.proofprofile.net/proofs/artist/fbfa332c-b633-4b75-9077-395862080288.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 0x009e879bdb739e80da016799fce0b658fdb46982496822b3521a700ef7f38ca9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/HUAWT1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ce54c591669c64d5e79a61ea17d033f4e0fd33ef8b5b813ae4e355e2e7d4f5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HUAWT1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecf11eccb2715859c170b9c1b9bedfd67ed619734ab8acd77c68d14e40cdadf. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/HUAWT1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e6774ec6001c424117750b9205ddb7227326307d0338bb32af291c34546227. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HUAWT1800006.
Nem maradok csendben - A menny már csak ránk vár
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f28e865852c7eb5d81d1a02704b589e26f37923e73997e7a35ced6063f228b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUAWT1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6631e209ee8d5de1fb4c3138c466c5a11718f5b40237322508cfec7cb7b4e179. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/HUAWT1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd92517eaf86cdda0a1d6027e439f6203c0e120dcbbc4023daebdf80c78e71b3. 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/HUAWT1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf720f20b13c6c419d32fb85e2f696b124e313770b92f68bab2ed74040dc89d8e. 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/HUAWT1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7561801cd481c2f1fac923102287506880dba0abf054d5baa60496ab1cd1f0f2. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GX38U2155676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c05dbb49847fc84b5e266414bcab51fb78e65d3160bfa0000f425c64a69814f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GX38U2155677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eca29da455ab2ee7c4c7a0ce754611f70ce07274f907e9a86afdf3cb8ca8a6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXBDS2300005.