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 0x3edc17a8975b282040a30629c528260d1e8c32479f2bd2de0f05a10cc613b876. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c839dab4-e873-4c72-b978-912445f86b50.json and https://artists.proofprofile.net/proofs/artist/c839dab4-e873-4c72-b978-912445f86b50.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 0xa4fe76a74ad30302381b8f4fd4c6b9091b1fb7c974c303327bfdaac267bed024. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BCG112200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1a7a1c432a022c1153ab68c5fb427413138d8b0c5448031dbace8c8065975b. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/BCG112200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e78670082c2824d0da7bb9d75dfa4181be62296db3807fd3ac5d98c2a78474. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:58:04Z), 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/BCG112200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbdb5c30d9f49ab9e590beafc707d1fc57f1ad2444a2e42640932cb4fda8616. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BCG112200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987bb27bd1ca22d93211ab37f6d658a10d507312150936b3024da7cb213c06f5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZN882293639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc587b2af1c4282431fbb839bf126fa2e69812449b1a8dc41d5183d6041d6dc0b. 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/US3DF2494173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e70c06270c097ba3dd7ad72983be0fad78a633750d70bc75aa4d9871602d6e8. 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/USANG2423594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e70c06270c097ba3dd7ad72983be0fad78a633750d70bc75aa4d9871602d6e8. 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/USANG2423594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3400df5d9296a6b8977f5a88d556e975de6702e70e31f400cedcbc7016e3f8. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/US3DF2275406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a4dcda1b4a836412c01a92ae8a1eced3e8279ceca284b15ca1cfdf8c2dd7d0. 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/QM3DF2168493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d5de89c1db2d588e3121e986aea0690151bb6825abb1d62d5703f36e289170. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM3DF2119375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987bb27bd1ca22d93211ab37f6d658a10d507312150936b3024da7cb213c06f5. 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/QZN882293639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39a8e44ef8dde1bf0e8712625be2094e91e257c3dc2a50ea1fb4ee886d91625. 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/USANG2222316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ac5845a156b97878e01900d6556ab333088cea0c7140c5583196937bf8dbe1. 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/QM3DF2280711.
Chill Brazilian Storm: Skate, Surf & Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d43e7112452d605943f9006028a293c835f96cf176e3205806ab89bea2b2c35. 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/BCG112300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb217254f1aae728f0a3eb4836de7b781767773f7d41a89b53cd1d1756f58c88e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM3DF2201025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6cbca518cd4dd374a396718fe21f52bfd946cbc47984c1ac28b23c496a1994. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US3DF2112299.
Chill Brazilian Storm: Everything Is a Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fe76a74ad30302381b8f4fd4c6b9091b1fb7c974c303327bfdaac267bed024. 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/BCG112200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d751190a0838e5463df3369bd55dc80155028935b1137e46d1391aca79cee4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCD4N2200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8c162c8a61c6c2576cc08cd5c282e0ee659bf2da35b30250850a0b4143325e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US3DF2207037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe61799cf42a88b0028a52df7a771539d8b95e368e1264f37e923491160c6c5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMANG2228732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798988a1ab6143ef866508fd78e3cbbfec1600ca42c27f1871a6d3e58dac14e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZVEM2322465.