Philadelphia ( ), colloquially referred to as Philly, is the most populous city in the U.S. state of Pennsylvania, and the sixth-most populous city in the United States, with a Census-estimated popula
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 0x5b9853d16cc1d84c55e52291cf4967e23a561b465a6230a7c3acc35aae2c7cd7. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32a2d473-152f-43f5-ad48-6429751e71c3.json and https://artists.proofprofile.net/proofs/artist/32a2d473-152f-43f5-ad48-6429751e71c3.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 0x81e5bdd467eaa215a47ca10cff36e904a82828f26a50e4a383090a439afb2527. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/ES03S1101853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6cd32742ab942279799379139883ac6d6fef5e03bddb5a6cf14d5d75c8aba8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ES03S1101854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc77c62360a37fc15d728d344ab25398a899c426d3a39ebf747bfdb311ceac5c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES03S1301876.
La Vieja en Camisa / Cosa Linda Cosa Mona / El Bombón de Elena / La Plena que Yo Conozco / Mañana por la Mañana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bce96b6dfe09ec28f6f57e58089ff385344335f898e6a3daeddd05af53c732. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ES03S1301877.
Cumbias para Bailar: Cartagenera / Vuelo 502 / El Orangután y la Orangutana / Me lo dijo Perez / La Banda Borracha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c148e4a7e0df28efc0fe71c677ae0e86e1a3f252168ed90d1bd9c4e8d09a462. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES03S1301881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2a6f731132e2b7c4c8d1df5d4b03616618d24069de596e32ca66d59ac3ff24. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ES03S1401915.
Because the Night Belongs to Lovers - Electrónica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14557a9fe6d2f27beea6ed29979f04af10561f9ea907f316eb6764e70da245f. 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/ES03S1401919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801614f496ee443cb0ca78973d0e3a0cf2960248db58f15203515ca0e4f096ea. 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/ES19G0900285.
Grandes Orquestas de Galicia. Feliz 2014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc7dd61deed91b98bec46ccad8c76df9d8160c1c0ce4829a532f83f0e7add3d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ES19G1100268.
Ponte Elvis Crespo: Suavemente / Algo en Tu Cara / Luna Llena / Píntame
Música para un Fin de Año Con las Mejores Orquestas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0d83f6086b18345128109793301af0341b224f93c63e11befbd15deb2ab33c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES19G1100273.