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 0x6fea8dc920f1e4710a09d4e95c4bc2d0479f37437df9f7e022234ef1cfcfc1ad. 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/9e2861d2-09dd-489a-bd8a-9b9fa1a297de.json and https://artists.proofprofile.net/proofs/artist/9e2861d2-09dd-489a-bd8a-9b9fa1a297de.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 0x6baa92f931208964feaa1ff61ea558c14401c59714b3765f999b598b3d14c579. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCACI1573111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc3783771320fd7328f6e5dc2b409500a5b6dd7ed301d7d9769b82bc06d03f3. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/TCACI1573113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b14e99bec2e6d8747b0285b33b5cf8af58079f9b8b5c6dbc40d0e4370d8b082. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCACI1573118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b85744312b0b83599ed8d4a9603c427e75b66b70a3189ba2b71c3bd50b3ee3. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/TCAEY2060536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892ecbd39cf0c419fcffe41ebf5f1f3709b536904cfdb9dd64603e37dcde48dc. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAEY2052169.
Mis Acústicos Desde el Roof (Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3407b2430bd48c553905d0a232899404c5d34e57059fbfc7211d86160628aae0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAFJ2190658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd388bd370ad027b135f6920da38b41fa7f9056c5ee8f304e328e766ce5dadf0e. 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/QZHZ52270106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4256eb2a8d5627f4744796177703324806d570cde3d9c7cb722db8e3dbc24e5. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/TCACI1573114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d73ecc6d87097d061f5cf8e520cd194f7ac4c222faf853664a3df0c4ea8071. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:49:34Z), 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/TCACI1573115.
Medley Échale Más Tequila: Yo Ya No Vuelvo Contigo / Aquí Abajo / Cada Vez Te Extraño Más / Me Gusta Todo De Ti (Banda)
Medley Échale Más Tequila: Yo Ya No Vuelvo Contigo / Aquí Abajo / Cada Vez Te Extraño Más / Me Gusta Todo de Ti (Banda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129e7fd929f76ddfb5f7ffa96500b375d8a940752cc7b3569baf5a86127e3bc6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNJY2394617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f8cf35098058169852a21981f334b1aeb317739d0936712c0fd9aa5b957d1d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB2465603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183b94deb2893974c7507ac7ccbaf7d34a1822870f9dfdc19860d79cd0b1965b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHZ32190456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe64ec1b0307ae760988435aa643b86b2e45ee390d0f71d70fbe5adde1ad5320. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUYG1584364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a71ce4274a89d2502765f6773ae7f2135a72ad0f22c42b8f7e5d3495c52dd64. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USUYG1736986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601a2005bda7eded1dded0b9d371023517c36d269c7526fd412dec52cb6eb293. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR2X42546007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52a8e1478cd8fc8348c4ee94d069adf18be2170da9f27434a37c06b15d8596c. 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/QM6DC2074158.