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 0x6295f3321db8bb30e70c6b9b57b9e3cc6aad4a3a09e79494e93c09615f762404. 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/9dd196f5-a373-4e4d-9293-8e63076a99f9.json and https://artists.proofprofile.net/proofs/artist/9dd196f5-a373-4e4d-9293-8e63076a99f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Melodías De Agua: Melodías Alegres Para Bebés
Armónicos De Canciones De Cuna: Tonadas Suaves Para El Descanso Del Bebé
Ritmos Relajantes Para Dormir: Música Para Noches Tranquilas
Abrazo Del Sueño: Melodías Suaves Para Descansar
Música Ambiental Para Dormir: Capas De Calma Nocturna
Meditación Zen: Música Para La Paz Interior
Sonidos Reconfortantes: Armonías Para Las Mascotas
Duerma Profundamente Con Ritmos Suaves De Hip Hop
Cadencia Pacífica: Sesiones De Música Para La Relajación
Teclas Para Gatitos: Tonos Suaves Para Gatos
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 0x97811918c4acc07465d76b19bd7280c231b023e6cb1f478976e0732d12544029. 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/QZTV32433923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296bddb33dea39977be007ecea08ec7f0efab5b11838c9e24511faef61b8aafe. 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/QZTV32433969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770ec83f4364e26a3e6bd79aeb40e3441f3c4f2db38f34bed894ae406eb5fa18. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/QZTV32433900.
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 0xa63037e0df5dfec57b0d8210d1b3c3c2b77056858f8712a89bf8aab48d5cab1d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZTV32433915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7103794aa1729455833f7475ce43287c33030686bf3a42c0d86ee8371b11b462. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZTV32433952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda77e7c19e0c23e32dff80041766415d70451165aa8791357eec5a97f8c08f6. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZTV32433961.