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 0x8be62e1b5d3b883f200138afe000eeaeb5cb86a5ff99f3bd6725bc4ca4974bb3. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2febbb1-b9f6-4eeb-b456-cbb0b4f2943b.json and https://artists.proofprofile.net/proofs/artist/b2febbb1-b9f6-4eeb-b456-cbb0b4f2943b.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 0x263d9ab4f5e341e0760832ea508e9ae8be2b2da45e69616144572db9a11d9956. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:47:10Z), 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/UYM121902548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeddd4df4aadbb47b5a91e59b597cdd7b8bdaa63c0e142caaafb8bac4a57e472. 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/UYM121902566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83524761b0ddd0ffbe314e3f966de2752e5cbdb7e8bacbd514b97b820677764a. 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/UYM121400345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af5de60c4b762a31453f75c399c29db444ef72aef78b3b4f443f82da0f8fb2e. 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/UYM121400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f48605b536e7ad32c2dc31db2838d372aff1ce5430d7e585cc47d9d650607ba. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:19:35Z), 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/UYM121101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11cca6034d200eae615f32dcc0c5f6c09c0b161669b3175dd0b8a44fe3fed53. 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/UYM121101552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72949541ad2ab1c9b09946f90a61ab8d77e54900fdd9dc76b173e76e52a395f. 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/UYM121902853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a25e98ec1d70ed628692e9bb03605b57394cc408af91dea262c04bbde31234. 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/UYM121705903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d96e23f2d170a7416eae44f85c902f4b772c2d0bff3a50846095151fa887c6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM122002384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b89874a6879d1de907b5b96856914aa9e464acd5b8cf05e8503c9be6baed7f. 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/UYM122002387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954491d26139c200895340ef6e47b55e3034d22df4e186c492ff8a147f6e6e61. 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/UYM121806483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dcc7cbecc32a2cf49a8c1e2aaff6a28b1cb4fa11b75061483dd410604effdb. 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/UYM122002390.
Mañana por la Mañana (Virgen de los Colores)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad5947ca47dc883a7dc3f11319a7a2b3582457be98dfdcb99527b084e4a0268. 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/UYS051900657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7397dc1ead121d0bfae2ec2802e49a7b500c04be46b56ba23a36a0632f08f08. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM121805754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366e72bf21b8170128fd5851296baa7930efd69f1de0b78aa002b693b02dd83f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM121805731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879806a1c97f8078b6b27c8f526fa151e417eeadd6dced09aca24701b644e9c5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM121805738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59ee5baefc9b7c1c61e3da573c9afb0a1d6dd11e2b458a67c381b0b28c0f8d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM121805762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895c44850566e9dd1a3e4f496daddf4858f376a4a0a48288849790b017980f22. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM121805763.
Las Canciones para Alfredo Zitarrosa 80 Años
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7579e05937cdd0e51c4d002b6664a07d09143b5e1c99ba193d1f6fed146042. 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/UYM121401053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c472fe095bfe3959c2a9e66acbd236addfc3d2169db50f9d7bef606e7bf5660. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM120000678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1761c4b5bcc4771e5c051f79acffdba6f3e7251eea69625e299e7c42664202e. 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/UYM120000679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417dcafc87ac6becbae716884a793bb88cf4f774ccc1e4ce9ab77881252b479d. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/UYM121401432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f2f00bc79a3e53efac9fb0a4c14b4f48b145f960f948035650e372a5378239. 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/UYM120601357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbfdb3055de8ad6f97627106b6a0b64f7ef3c69b5470b95bd29ff7d14e52619. 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/UYM120601362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bebcd3d3458acd84e49b5ad071bd0d9e17d4e565ef7e7bae105715519a46192. 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/UYB140707508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91667834b2ed67ad6cff0a7b25e77d235a5e4f370e33e2da2f7d1d836c950ebc. 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/UYM129801001.
Enganchado de Cumbia 2022: A Sol Caliente / Payaso / Mentirosa
Me Lo Estás Poniendo Difícil (De Menos a Más)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5befc7b7ce060cbe9553a856dbf5fcae5c4e3ac3f695b1827f59c0547c3cfb1f. 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/UYM120802635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd33304353bd97ca97d92b3283286acf7943ce1b7d3af1d7eb9ec0112126e7d. 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/UYM121701280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5e45586a702c421a9598d97728335cd2ebfb10b23d6cc7e18485fe591cf05e. 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/UYM120601409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6066515456ea42bba28062b06c13de85b8a84b87de852cdbacbac441b653d850. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM122003240.