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 0xf6b7c31a69fb16b43a87b44c0b1ae0d567ba9d022b95484ea44839f66c934042. 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/4ebd699b-2b87-4bd8-b59e-0851b3e49fd1.json and https://artists.proofprofile.net/proofs/artist/4ebd699b-2b87-4bd8-b59e-0851b3e49fd1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Árbol De Esperanza (Silvio Astier Remix)
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 0xc73a385a8c2596c07ae2a52802e4695a09cf5704732b48dc8935693763d6a6bd. 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/QZGLM2285858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6a9d01f4b48bec4955756fa0e1a41a33298387980979a936cb4f8e20effd61. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKACT2131361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b275ffec1114eee8175e69010888ac551b933171ec6af10abc0cd6f80a68298. 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/UKACT2131362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081168fb81e6e9ef79075de8f5e8f2c09be587048d0f964742bbcbc8141b5014. 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/UKACT2131363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e80439311c4395f191b0fc5ac5df57e04af8df67a9641e221e9d3cdf8816f3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKACT2131364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c98681807c543db59d93738abb5c4cf4dfb7f0828977ebf19fa235529db49d. 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/GBMA22110068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef0f0f3033f4ce509e75593b3ead05332a513725d22fb00de089e003b1233bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU7890960.
Civilización y Barbarie (Maribel Tafur Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4611898c74e83f8239316793ec85db8f902139616fb64f6f2643574e64b37e3c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU7890962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3df07543d16a5bf100086087a48777d60f17d91eb8c48981bbef8ca4366b237. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU7890963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc958300a3665ef5c2a549ac92ab562fa5a1c6e20221816600051b029429e8aa5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSMU7890964.
Civilización y Barbarie (Pol Nada Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3824b5ad327977b09508d50d5279c5dd7dcaa34165b1c6da2f8c73989bad33e8. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:20Z), 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/GBSMU7890961.
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 0x75fbd8ae41e3414606f2201d1641a6ffd80e20bd3be81530505f6646e89570cf. 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/QZFYW1979835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89544901b540d011020fe8ba28f239f3f713b2082d0580d6a016161848a10a9b. 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/QZFYW1979836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad09a960649e462923beecb6e0a29b772a5ea97d7ae05bee007d2171d5537b83. 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/QZFYW1979837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6986868ee35137afea0811888d037111c0c90b28e145998aa1431c8db55f794. 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/QZFYW1979838.
El Coraquenque Ciego - Natural Magic Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347c1df77985189b687efa2aec10472b256a0a2c833e834d7aedf7cac7dd98b5. 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/QZFYW1979839.