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 0x3e698b8caf1d3473d6496e0352ab025591108a261c51ad9b4ad949e2fd281f37. 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/16e72622-80f6-4d6f-8558-927d6efac03d.json and https://artists.proofprofile.net/proofs/artist/16e72622-80f6-4d6f-8558-927d6efac03d.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 0xb6b252f35a4cdce25b1330e58f42042fa55586900d0a2fee50ca4af78ec24d14. 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/USX9P2048116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5751ef930030d4b5457df7a185e1e4fb93df95025875ea31a9ab1fc15b5227d. 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/USX9P2048117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ac034e89b528531714d269f894f557f532d78661aacca59ee2ec76cf970f11. 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/USX9P2048118.
Llévame de Vuelta / Quien Ya Pisó (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e32cc5cd4f4e84a3f2529f1ccc753988e2a90bfaa89d5b9f3652cc8bbbeba12. 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/USHM92455601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2933c7289383d694b9a57cc203b780c001a96d0c28adb9c3b81eb350ce0b6ae. 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/USHM22422294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dbbabfb644e333f54346853d7bbc2eed812d17fbc0395ad708729e4599fc49. 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/USHM82383714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f17becca2d784080020c6929fa28ddfa3f8f7bfb18ec1fa97f6776022ebeeb6. 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/USX9P2317366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc18ea810bfcc790bea2ede6f3d89c1c773730add9d76732ea29271cf91b3064. 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/USL4R2214995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21511cc16bbe52dc343bd04f867a1a88db419c4e530868cc24bf652591bb6ae. 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/USL4Q2237733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadca17d0542cc7c2673a823557e7546017a649de7273c4683af2fb7d03ec1d3. 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/USHM22241630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad3da48f406b581736e5c90e14386e8df5d6a323afb09caa1ee99bdd90b154a. 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/USCGH2215783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4287f368ac29daed06f1f043f86084e19dca27c04dfa5c34cdbc2242c70333. 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/USCGJ2114530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2357c233e85206dcdd7f985c6cc08fa253f35c2de806c20bdc4f12589b917abc. 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/USL4Q2069125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7204c0a9d40436913d79eb209e51688716d3398ad693b1e74d319e805f2b8e6c. 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/uscgj2005530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb41b9d4a6befdad4c37b7bbd189afe077baa9178cb5558df7f2e5e5a564016a. 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/USHM81912862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a04e9295c8734e0501de060b8490b2ec6d40a9ac3c77df457ca4229db6e8b. 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/QZDA72320165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1556ad92dac81b26a469b89a8963b222586f8a0df71cd97c943cb4d814ac61be. 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/QZNWS2332218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1955170b6fc36a7faffece27dd52ad94dfe74766ac2e031c56b68a68bd131607. 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/QZHN62442475.