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 0x9c1266e3f7b8546e92a76cf9299333e90d31dece22263a97650e4a3fa1438bbd. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/651cefe6-5e0f-4113-a43c-55acb92b0a8c.json and https://artists.proofprofile.net/proofs/artist/651cefe6-5e0f-4113-a43c-55acb92b0a8c.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 0x98d4d4bfe112ffbbc99a8d2bca8af193e086ec8ac9642647ce0855fa24a0f5b3. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USMH92398639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4a0160a7efc6c84585ff192ae2b11f50e3a810598ac5203bbf983361380754. 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/USMH92398640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0792e98dac60f3d0cc658e7d7f2ed387372d858fe43ca07ec8bafd1fd9ca92. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USMH92398641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fa613b100962dc5fcff6a436ae0e49ba01f2b40f2a85e685bfe02d49e92287. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USMH92398642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fda403dfbb33b7afcb2dcdc5cca87308cb50b9448593e4eecf8c32dec9d07f. 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/USMH92398643.
Que Confusión (Ball of Confusion) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8d87837227cbb9f9b766ad0cdf9be71c76e08c72297cf8c1e5bba488e632a9. 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/USMH92398644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92298edcea7d3ba287d5606b253f4fac8a00402536d9dd039704621c9bf1db31. 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/USMH92398645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cc4eb75fd4907d2b630354703bc60c45c37b977c05e0e7a88892af76e1d23e. 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/USMH92398646.
Nada Ni Nadie Nos Puede Doblegar (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9ded913eee80287adbd43f73f6647bab199cc522b681a9aad259e0ecf03240. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USMH92398647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc0473864321b37a6e0b378c4673cb1e7a5161a99958f8cb1c1afbd1efb4d5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USMH92398649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba5fb9a7cb7df85e17b2bebc6aa8ca09fb31a86aa5f6bcf62d025ae6c0f4b66. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USMH92398650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73dbaa5cbf8c6e73421c1f43ea1bbe2a026cc053728b283876397cef0b1fe50. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USX9P2067594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f76daef096a0aced0b8ac4072b96be4794e2e83f7003ba27a2ed238941d92ea. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USDY42435598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9a0894dbc59d9679479f114689abf9d94eb6d80eb386309f6e36872461d96e. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USDY42435599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8bd9fe5fdbdc8a3be50e408c82f5cad88334a33d21676defd90f432553864. 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/USDY42435600.
Uno Dos Ultraviolento (Banda de Sonido de la película "El Robo del Siglo")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843bb04c4d5770b5c06e548dd22cfec3d42b1c2e2b16c468a2b059a6e1600b29. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USCGH2035636.