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 0xc98cdf11b169c5f17df3a4d3e33271a6e488fce1d64b667adec4310d8d263cd8. 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/54698803-aadf-45c1-bc2f-961b8679ba0d.json and https://artists.proofprofile.net/proofs/artist/54698803-aadf-45c1-bc2f-961b8679ba0d.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 0x830429711a19254c39eab4df3556587781a027ab939f7e8771d204ff14252535. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T10:33:49Z), 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/USJ3V1826021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78908af9612d0e102d4c88de3fa7f26f28be86516b0d131d181bc1133eb41e3. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USJ3V2013120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4670606914f5a07ee885b1d251b35b00d1bf211f72eab32699c25309f6eec552. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/USJ3V2125329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071d4b593215f15814499aa58d968c667e602eaeb36859d68554273e808489e6. 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/USJ3V2125332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d2f4d33ad937e0b508b9c43f9e2015efb7dc6000df8c3946e3990d3e845d2c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ZB0A82200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b06920eb271719eb410e4e68b5a05d391fc9afdb191c76acba480342ff8a075. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ZB0A82200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3087f14d272637735a3f39c732c4cbeba4167b018a97226d1c79acf8869b5265. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ZB0A82200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3050eb20f8fc5e6b83db664d1c8897ed2f115b48b344539257a2f103a548c61. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ZB0A82200006.
Wololo (feat. Dinerow, Nvcely Sings, Gondi Boy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7791f21ede553b0cb53e030e38649deed6dc0ae7249b4b1abeeec6c45cf89e98. 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/ZA56E2315186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc706d772b1302c8d3008d2a3acb0de13f9ca2a64ada404c0fdc7e093c7e67912. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ZB0A82400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ef85c181a1da5cfd77ccbadb4665e06291c98641c5b41c71968b59c6fc79e4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ZB0A82400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4552ef82b4ab3ff5582c974c11f2159a0b025bcf5738b38bc87f4f98494f23c5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ZADOC2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ec13446a94f778d861ca9090185449e5ad2e2039a7ea1c1feda4ea73181261. 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/QZWFR2326999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8212e010e5fc7239d574119f67f165ab4c2a81bb04d8a4a9f90c4f6b1481745d. 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/ZA56E2315097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4993b3fe70ec67c4316419f16efb59568ecfda0d649286c55f2bd7530b1c7eb. 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/ZAMYD2100002.