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 0x5a2a569987ac4b5d318cc4291e852350b1cfe495f7411ce33ab18ac73dfd433b. 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/d91df5ad-99cf-4611-96cf-34091e91159d.json and https://artists.proofprofile.net/proofs/artist/d91df5ad-99cf-4611-96cf-34091e91159d.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 0x6eddc9d191a35dfd8b40ff1c31d56f9da7649c4fa97e2e9eb2270fd3fc1a8227. 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/FR10S2139957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2cc4c10d86742df63a1ed9f9dad053ddb9a21a6a30ad9859b59ed6bd9f7019. 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/DGA0M2326182.
Jagga Jatt (From "Only Love Gets Reply")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac89fa9bd34ba5afa173e10a1346649240d323c00b06b2d1158fb9a071bda4c. 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/INS182401511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a029001a7cecaad7585fde543b400d7ab7195e5ae8890233736fb22f560799f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:19:31Z), 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/QM24S1925556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a946c013392753a534c9b5846a236a558aff9980785eddcd9a694a08e1792. 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/QM24S1846241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c6cbb759d4ebafdf06eeb9d95212aec5c37f8a69c34d64ac58b5835539e3c9. 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/INZ031407339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffef86c88519fb5dc8b3ff7139b40df116041022017323cbcf4305c296e79f49. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLRD52019284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fccc75b8d2129b49fbeb97d70ead8a8c97766dcc1089a5815b351e2bb8dcff7. 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/NLRD52010172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6915ee2af7cb9b076a5cb818120d9332b8034a47aeecce45b1c83b16f753aaf5. 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/DGA082428477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef535b08fb27dac18e1e00b6228cf777279b032d19f95ac8d51cb5cd28eeff11. 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/QMBZ92359961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db748a23a43cb417279b081f8b3864c8a518753403b1e4d0c6d3e6dfc09725c. 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/QM6N22339016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ab25805bbe345c128b7f18caf9260170de3c17f5257ff4863ab09b224cbf97. 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/NLRD52074501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ed9c39c452dd64e245d09c7ea14bb63f9daf0f831f64b92cbb6666f2c1a3ef. 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/NLRD52019276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b7390f82150aa75a78f1ef0b5ec4f0dba92ec7d2401bb7e0cc8af79cb36a4. 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/NLRD52019279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ed9c39c452dd64e245d09c7ea14bb63f9daf0f831f64b92cbb6666f2c1a3ef. 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/NLRD52019276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea46000fe8cf71dd870b38bb34e67a2ff18b0e0473f038ae35cd10d7a7917bc. 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/NLRD52019281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9c133aa1621f15e5c05544f26d34a367bdf91ab2482198693ef25d1d393337. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLRD52019275.
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