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 0x3faf12ad2debb13d678d9a16131ac99e012998b0823b99d035b712be4ea01172. 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/4c2270bf-b359-4ab6-9711-5ba0e740d2ed.json and https://artists.proofprofile.net/proofs/artist/4c2270bf-b359-4ab6-9711-5ba0e740d2ed.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 0x0043756f883b07e70070a9622d2c1a34e7b5116d602003a8ed7ced323a0e5be6. 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/USUYG1113664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9cfe657dd78c6e57be34974abcf235ecd0c2d0e075e0ef4e97a3b69db25966. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUYG1113665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95f3fa6e6062f7861673bef1d81abe002551421edb745dceafee625bd5edc0f. 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/USUYG1113667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6843ba761b4b1c5f32e433df8c636955bd8133cf4c6bce6081712910756a44ab. 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/USUYG1113669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a24c865e7570c8d37442b5fd10acf6d8b1382a93144279e9d995ea4ebab2736. 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/USUYG1113671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe755e85cb9c13ac88fbe8027a5183987c1dde3204eca83b7a923213351c6fb4. 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/USUYG1113672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d064945b30d70ae5c7e87cc2c68ac10c6dc0f26e2dcff361006df1b58c3d147. 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/USUYG1113674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90663c78bd3c0e6a4129902ede3628f216b51e1a54d7617e52202a12ec990b3b. 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/USUYG1113677.
Chopstars Radio, Vol. 1 (Chopped Not Slopped)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8065130beaeadf8fbebfdc9e9e5356abbc70a3ac9891a290f71a5244c6ff68. 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/USUM71805761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99d6f6c21a0e6b6a10c37973bb4684c7e0bff46569ea5ef0cda7901d1bd9469. 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/USUM71804543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2022d31109b28480743c5ae1830e96c8b7c07ac9e80aab023a1573dfcb697bb. 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/USUM71810272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa480295e6756fcbc2af948b285d0a28a85b9863d7dc2b014e3d59a76e06a971f. 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/USUM71811709.
3AM (feat. YoungBoy Never Broke Again & Cashmere Cat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cd2ee3a1b4f6372083b4b4e02440adcbeb0b0e8acd0b4d1685c475215691b2. 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/USUM71811452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4498437ce8136801eab6e8c89593550fec97d247cb8c5a5b2091888ce7a758dc. 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/USUM71800809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2188a8c084c92853210c53465cd91d586cc5a48be171d5244196cdfbb8246. 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/USUM71802285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508fb70ffc324ebcbc6bae2c8de4343b667180ef991433a415dcf2d778affb70. 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/USUM71811453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac9501db56624a803d86cca0171132070b3285464008cbfe847c68efcd4e2a6. 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/USXQS1616799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d6cfe08d890f83f1b06ca6756e23fe410d2f23c97aaf615f9f559c979c1c3b. 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/USXQS1616807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddd3fb4bf325691c73e650644079c1a297e6b1e09fa2ecf75e9f5d42a800a3b. 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/USXQS1616814.
CODEiNE Castle Freestyle (feat. TRiLL Sammy & DiCE Soho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf762f095c92784e6192a2b41fbb7b2f0b2a25d7bc6754961e11d3e03da6e8690. 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/TCACP1630706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd460940ac247d520e957a2bd5ef32f429a7712a4184580b078487b0ca4c3b7e. 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/TCACX1724172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6647e00e89b64cd05a11986203e24340e0facdecffb0b91702b5c8c5010d68a6. 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/TCACN1668933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c035129c43dfc9910c7c1ba6216ad46cc96422456960b0ba3812f73f4232f0d. 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/GBKPL2092442.
Chopped In My Ranch (Chopped Not Slopped)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a928f0d1f67be171f5c066a98bb6ba7ea96f8ea81febaca4f4423db9a7ac593. 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/QZMWW2524760.
Sammydextermaxo (feat. Maxo Kream & Trill Sammy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a24c865e7570c8d37442b5fd10acf6d8b1382a93144279e9d995ea4ebab2736. 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/USUYG1113671.