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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4e6c7935751dfb18948a0660895b60a1d3d4bacbe9edb78e1051eba0c3e87d. 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/f504503a-4b29-42bc-9def-7c774027c729.json and https://artists.proofprofile.net/proofs/artist/f504503a-4b29-42bc-9def-7c774027c729.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e796c59a5538e3f6a516da6bd6cce6e7e6329604b63b0816aa22c349d7d822a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM6MZ1716758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c49726bc4f24cadc88658bdec3a589e9a6ba334051dafbf2c667fff275c0cd6. 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/QM6MZ1716760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbcf0927e53c3dab7b8ccadbc1082ac060ae11fb58854bba7af9bcb75a76a49. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM6MZ1716763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822fa1bda63340006a304fb7edb7d4bcc1953fc4a8f2fc52db1667bd58d9fc50. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QM6MZ1716767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22f9021ef994c59667f46a6003ab24b7b4d1fdf926afee558d2ef20e0aa6d4e. 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/ARCEO1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5c38b5eecd644a27145128bcde53eaa272d92cc1599acdb3bc62c1b6ddfdcc. 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/ARCEO1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46b7ef31239acf7c57fcb18b31dda1fd94e35003af278688d8a08d873739eb6. 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/ARCEO1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6dde84ab8225ff3f16f3108e8be0de9fbe2781519e61438180eb4473a1c21. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/ARCEO1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e916363c29d86eaaa4e1b50722e40dd3b8a11735449377fec5d52595aeea33. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARCEO1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268cbb30b03a0796a65b59f7e998470f2eca1f50f7a78c24e504a37dcc4f63e7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM82242581.
Márchate Ahora | Muero Por Tí | Yo No Sé Mañana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46549d40937e0478372820fc7cc1e09cd98eff2ff05998353f2be6bd5eae1518. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/ART3J2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c2bcbd8641c8afceb11c1b94c528cbacd9f9931205485801d912b734a69af. 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/ART3J2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64245dce0646d36ee36e4947644bd343810dd5ed8103b9de977d66354e951aa0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ART3J2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77003c97029df78c9d0bb806dea8b2420587fc8d0307a549b83e6927b9c7c9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ART3J2500011.