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 0x6be002b7ab9faa8fbca83b6a47b3be10583d234df508b11a9cc9e93ec7c405e3. 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/807120eb-7f95-4adf-8a61-d6638e1ed822.json and https://artists.proofprofile.net/proofs/artist/807120eb-7f95-4adf-8a61-d6638e1ed822.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 0x61b350b9ac026d813cc7b2e50cdc034d6f5eca825225d40909ef04f289cee53a. 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/ITMDU2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4abdf0ccc3486bf16337fb900f11d056273b19d42917b101d59426ea7d507a5. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ITMDU2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec1705f6000106a52ca8bcacfabcdf3b687470098b8fa46e49fd378e800fb76. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:02Z), 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/ITMDU2200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c05d98494f6644b290b2048004ae1b6b7f8006d2c2e23ddc704abdd77056869. 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/ITMDU2200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c63fc940f57c4af41d31b3755064001e2f24fa12af7e60142b96eb1e9659ca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITMDU2100068.
YELAH (feat. Caesar, MarZa, BRESCO, Flus Brain & TOLKA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba6cb7e741946d81e833fe96403f73e4a41bdde4793ddfd40c1949726a5798b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US39N2304629.
LEBLOCK 2 (feat. BRESCO, MarZa, Flus Brain, Caesar & TOLKA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8bb1f0bed9044a0510fb917ebf6fb93a001ee69b54fdaeb29b83a0e27f3eb6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US39N2307416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc663d88cc65aadfa0c696dcd134f3e3219bed4a6dc0c8561a57012a448ae85d6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:32Z), 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/US39N2309103.
ARANCIATA AMARA (feat. BRESCO, Flus Brain, Caesar, TOLKA & MarZa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dca90ffbe4acc2d7194cdc9c53b1170be3184be2359bd3d9783d66215a4626. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US38Y2416954.