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 0x80c6b0c87ea47feaf040ac3821b1cb04c80a2060615fa81c9f1c0e511c56f280. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f9da47c-28e3-4356-bfc7-8d223f006929.json and https://artists.proofprofile.net/proofs/artist/0f9da47c-28e3-4356-bfc7-8d223f006929.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 0xf85c081ccf1d80064e17137ad062d13f329f1a2eeb1a94f9d7fe42707555f042. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DKUM72100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61363e760eb2a5f7b0c1a296651aeb632dfaefa9b9aaf87011d4a27109017a0c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKUM72000840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4082b69d2302bdd92d395e7f6857f09675f5278d64ccaece0159239e7300d35c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DKUM72100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d97347729f0b38da89f89615f0ad09ea876db9be31b363dfbb4c05100f3add4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKUM72100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2130a775a51f41b3d0690a33118bae484ed019ffff1bba3e1d9545ee3c9ff03f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DKUM72100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d9e6c522ebc108636edcc2fc4eac569636211b5d3b0d1f02189ed3de6d3983. 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/GBLPF6735841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ca970675de996cdaf454e0047b4239b03f0eb49f7bbfb82b3e6696cd9fae89. 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/GBLPF6772912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb4b2a5c7b4527e8567032706d39b002c092870360261321a187ec2b4ed2434. 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/GBLPF6787125.
Ensani (feat. Zoro, Ham Fra Syd, Lee & Luqa Dhere)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd480a907e5d3bc961e58d9b3d6a3f39a71ec5d39561d8d40d3729324ea0440e. 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/DKUM72000753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d53996a04d43d41cf0d2602364c7579e27a51fd1a35dee56814ba3648188297. 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/GBMA22493144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b2b2c8b7c1470a1e9383b1f89ecd01c9a202ed89cc1283ace4bff36640161b. 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/GBLFP2500649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e543e422a4a2e909bde278576f13ece7c83edcc53111a6ac073e465f1ed0b0. 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/QM6N22593178.