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 0x1cbc1655dddfc72813877498162019f5e8244bcbe5447ac7b3cd2a2bf17cecd4. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84d0cbaf-caba-49df-82b8-d83ff25a2d35.json and https://artists.proofprofile.net/proofs/artist/84d0cbaf-caba-49df-82b8-d83ff25a2d35.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 0xd5bc527a8acdd525365592848df16f192d6e964e04d314cfd379eee9c6ebb1b8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN62437930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceb3cbac4b5d87aeff2065874db3a1fa431a5f1781e03fe00a859acf95c6f21. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN62437931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55976f349114373fbe30e42d76d0fa6fddbb89a44696fcb7f248c8bbcb99ee2e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN62437932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43ce07ae6c5c670daf9a20f6eebc1b4128bd5a8ba67efeb60e38662091dce07. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN62437933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7e5d920c8580fcb95b02d716ab99a770a3428a1eda7ee31bd9426ff4f1d9ed. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:58Z), 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/QZHN62437934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b279e2790e03079d5fd4d55a0a6badd9a279d93fd4c5a5a39059ea2963533e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN62437935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe4147bd00e2b8462ca989f1ea3da1804a825bda1920959111604a62a2c0f44. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZHN62437936.
Francisco Sarabia (coleadero Escobedo) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c5b507ccf7dcffeb8db96faa3b3bcb07b87d708bfc92660d3506357b54cbe3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN62437937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2953ffde5a25dfc270dc06d14ed4aa178e963c6d9eee15a3f37896cd0c8b1c33. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZHN62437938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94c35ccc3cf836a77538f0be4788463249a9adf3d36ebb251bd025cf6ca4de7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZHN62437939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f3985fec26db0469e986059fd6f681307a9d9b06c7e69f6ddf0f050ed4942f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFR2470548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ee77d700bf0c1f7013326fd5041098fc9baad5b2427c758b956500f4a3a753. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFR2470549.