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 0x190f11e2b182542ab9a1bfc0f0c785cdca4530faa2023fb020f197a7169860ba. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea2fc808-04f3-4f43-878a-7346c15c95f6.json and https://artists.proofprofile.net/proofs/artist/ea2fc808-04f3-4f43-878a-7346c15c95f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Selección de Polkas: Jaha Che Ndive / Sabado Ka'aru / Ajegusta 5 Años
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 0xdfc81218c53f6bf056a856b1d8bc31da30de802516d38382491d8b5545505a9e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:36:42Z), 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/QMDA61551359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97092965d153feab5ed880d64056651f40d0933475f3fb2c43ce3698d091a80. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6P42169677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3dd83df17e169084a7bf05495706a381204e85f29e2366978988fe4b2f06c7. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USZUP1010676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d343bef113bcd22401065ffb2f5e8fa1369c3c67b34cbbc3cb298ca86a317f6. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QMDA71529144.
Ko'ape Che Avy'ave / Che Roga Mi / Virgen Querida / Entre Dos Roime / Morenita Ñañaite / Areko Cuatro Cuña / Ha'uvy Jave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd3d59d03e3c3c367599947fe9b4922f9b30be521645bfe42247e7b73771c1e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMDA61589225.
Che Yvytu Hasypeve / Sadal Yambay y Quemil Yambay / Che Mitarusuro Guare / Pájaro Campana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96efec07bd3ffc1d476f4a98ad45e607901e54ab87c39c01f34747e18730678. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMDA61584367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7647e836614319c8a0746b7690502b1309ff7a63b3c50bdd180d962cec7c67. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QMDA61588187.
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