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 0xfc0438d46003fafc7d5bc1d777e7f259b81413bd4fb041e7363c322f2c248a65. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1de0c2e1-ea00-48ac-86c8-ef61140f28f5.json and https://artists.proofprofile.net/proofs/artist/1de0c2e1-ea00-48ac-86c8-ef61140f28f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Can't Stop the Feeling (Spanish Version)
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 0xae420fc270fed21ec2a32b3f718d42970eb5593d6aef035dfc23f9f4f43d3e28. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USUYG1293444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d64902c986a8c84c1cc87b1fd187e9523c8f1ba85bfa3aff4a657cfc2088292. 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/TCAFB2053010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddd4d5dcf70d424e6fba02230afa684430f05fb34ff8af18799c9793598012e. 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/QZWV32451202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0022d76b24c63f37e6e82abc2726cc2cde2f537663eeb4df16ba5dcd2fa71fc. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZTV32567769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ac9301b402b7dca357ca974dd9e05e7dbea50f64b257c9a815d1ed9a587fff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTV32567774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de8680a53f18057fcf1cba0959ca08493366635bfa007571279d906b6e24731. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTV32567778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458463938c576c1ef725e91c045eb76016f42f55df562526bd6a16e1544d7643. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZWV32536436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e0a62ccd8a8fafab88c005a8d750c11f763e2a0688eb5a96c4c21c5cd70296. 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/USUM71029775.
Me Busque A Otra (feat. Tico, Gadiel & Jayko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b38bfcec583aa45ac3b09398b0c509efd86ff00a9da88a6da5d1ba184026ca9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USBKV1100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c58cc1ac8619c5e5db6581f6640c58b404a5a9a7c01a1f52acafafaa7920d0. 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/USUM70957140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5e7d7f0e439b234d67774b295cc7902746d6e94e7eabdf59378171036b6ee9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM70740473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8609ea3e6f0ffde125f29c29aaf5f9e46dc61e8bce15cae5feb02e6f3deee469. 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/USUM70740476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bf8724d67eb133c01cf1223ac72e9d2c7289f4c4af01907614b46d4d5750ad. 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/USUM70740482.