Yolanda Piedad Polastri Giribaldi (25 February 1950 – 7 July 2024), better known as Yola Polastri, was a Peruvian children's singer and songwriter, as well as a television presenter, known for her app
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 0xa3b53f64c473ecacec78aa3c4c421dee2ec259e9a1a27a4d03980338c5e476f0. 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/7ec62723-cc81-4670-b11b-e7b6ae09a26e.json and https://artists.proofprofile.net/proofs/artist/7ec62723-cc81-4670-b11b-e7b6ae09a26e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015ae1929d3c88ee551f2c387e6ecc324557ef1ca4b1a5be85d47df858528790. 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/FR2X41586007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7eb7d2d772e7fcefd469487910973cd36676761ece086839a8abf7d3bb4395. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR2X41586008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d2dff17d07af743ffc023913765b3010b1a25d242e1f0f679b19c07fbd26df. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR2X41586009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c20375920ca4c70a23981535ab63acdb194ae8a1db9d12153d32a689a377b5. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR2X41586017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ce72effdd07619f8aea7f22bfaa2cc7e3d5b5e7391c0c95513b29f4bcd0ef5. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR2X41586021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc1f4d013382a0bc1253c7d6e9291a1bb81309344a73ff74bff4c752537e92f. 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/FR2X41586022.
Exitos de Siempre (La Magia De Yola Polastri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a1f8248a17c0e4cfebc6b202ccac7fe647ec9727d3f9f1c998bc766d0fd487. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZWDW2421572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a80d234df0f3ea9dee945760fe0767da9cd0178f803fb744c92a2c33bb6a480. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZWDW2421573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdc385b139ddbe30afdcab6adae8bb498a152034d7cd7ea7610d3c895280354. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:04Z), 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/QZWDW2421574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac406466fecacb95edc50f0adca85acda112a033c3742b3870c6939c5148976. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZWDW2421575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3095eccd3f2b558b81759e55a23fd131255ce852418f56caa14fef72bf3837. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:36Z), 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/QZWDW2421577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906ecaf137e653f8c19f2161a946ec9b4b6e6cd28bcf1bd45807300abeb7d8d0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DGA062402812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1343b35c8397f4d7a91979a12e969af93720fd77ee9d7030aa2dde955a5002f9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DGA062402816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfa7a96dcd1661ccfec5479e4a88b902f493d206cd64af503b92ad7623cdbf7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DGA062402818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31a6d3056b3a52cf124a4f8ff0af1cb4b56d05d847a52e93d342867c1f5c5a7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DGA062404535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75760e6820ea9e2287899a54594646bf9dc4ef8f9ea1817d91bcf34cc20fc14. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:24Z), 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/DGA062403956.