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 0x39b96297196353eb03cce9912e858a4a59466467153c5ffe3d8dd5710cb57d05. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/118e32f5-6f89-47ef-b9d9-17c61d2d3f07.json and https://artists.proofprofile.net/proofs/artist/118e32f5-6f89-47ef-b9d9-17c61d2d3f07.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 0xeb345bb75ac8daca4993d4d5b1a3cb07929a31fcf4d912f36442567e13b11bc3. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USCGJ2054469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48003964df6bf0ec17a6568a42a449fdc42cdabd359e9b6b578b9147279378c5. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZHN92157563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58196e6ef9b8afeae24431dfff1f479a8ffddc1b541b2631233bbc90e014f14f. 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/QZNWZ2171949.
Incansable Rancho Las Palominas (en vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fd688de30723f7d3abe20d83d859273b198ddba1965337d36d3bb022bea231. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZES92336123.
Un Millon De Amigos (En Vivo 2023) [En vivo]
Para Decir Salud (En Vivo 2023) [En vivo]
Duetos Explosivos En Vivo 2023 (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6758c98fd28d8e9ef2934792aa2d5ed4e6d7f1efd4d8f4bd33a4dff4502970a1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZZ7K2406920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45e23a9ce10ae95f0a70582d4ff8f9d0adbc74e795654ecd1c44ae89b2e73fa. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZZ7K2406924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46128b3f5544350c21fff0b8c268524f2434363fb6939d0a33c6912f8229df1. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZHNA2555964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25102de00a6ee6433d0f6b0d519d12eaec451de642c4a13ccfda41c88320125b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZHNA2555965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49b55182f533d50a85feb9754ecaf7c8c2ddc3619f16ce419e9d2b840768fce. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZHNA2555966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fda049e07f9b6ffd522fb1e9cd13add52a6270a1e0137eac7e4bc85f7d5884. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZHNA2555967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c458a27c1a59b3fab3d062511049ec7db035977c91ef51a30d960c6c303db66. 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/QZHNA2555968.