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 0xb85c0ee8e06ec8b66a90d632fc989076933ef1bf5e43067947c9f305ed261474. 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/719294fb-dfa2-4503-9712-2ca3016286ef.json and https://artists.proofprofile.net/proofs/artist/719294fb-dfa2-4503-9712-2ca3016286ef.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 0x37636521ab06b3abd1293b6d779398e9c44fa0cdefd7e8ff7e0ca49e844cb788. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCACY1772445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3600b589b113a7fec1d6d7e89a16f9d14a981fb4b8096f2fde793706652a201d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCACY1772462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbc933600c6e6e8cf8e787dfa749b37455457d7fcf0c48756da368dd1761e69. 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/TCACY1772465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5157f0e5812fdfa097c3fd908206f69bb84eeb98eba1df449f5d65d6e288327. 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/TCACY1772468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce716990e0bbe3eb1cc37825a2f6db43aed2fa091caa7d36125da549fa77c3bd. 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/TCACY1772469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057b97f581ead349d4c3a3e9c7741f45f09551333fb423b4a66199cd688a8561. 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/TCACY1772476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa3495f3247c409ba325ffcfc57b7ed670443614e1071ced1507cb1f053e1a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCACY1772478.
El Show Del Perro Salchicha (Versión Cumbia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89b7953f7b7798b9876b494ebb312cc13a8776f5dd43256d4387a1f89cd7d2a. 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/CA5KR2313564.
Memorias de la Infancia: Música para Recordar
Hermosas Rimas Infantiles (versiones para arpa)
Melodías Del Anochecer: Oasis Para Dormir Al Bebé
Melodías para Bebés - La Mejor Música Infantil en Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0122c7761fcc08d00526cad7662b4516e9a0682adacd6417cb4754f1c708138. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESA012417389.
Quietito bebito en la noche (arpa instrumental)
Dulces Sueños, Arpa Canciones para Dormir a tu Bebé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d821c5df856b4d812212fd2bb08542dd59a711a6a4ab17b829d3351e74c686. 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/QZFML2005198.
Frere Jacques con sonidos nocturnos para un sueño tranquilo (arpa instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cdde22fd348aa05692d5ebdf6f0d2aec1de4cb3b9165670d92d0632ee9145b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFML2005200.
Tú eres mi sol con suaves sonidos de la noche (arpa instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54810b5029da7150a9f70a52553b822264e947d821a61c399044f38f7d464cbe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFML2005201.
Brahms Lullaby con grillos relajantes (arpa instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd8ea8c8ee8dd22b78e055ea36aadf83feb09769a479816ef52998d863517e3. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZFML2005196.
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
Estrellita dónde estás con sonidos nocturnos relajantes (arpa instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782c1a46bcb9e2900f655b1c858e862b5475e10e6b22c370647a07679738d5ea. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZFML2005197.