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 0x10959666fc2417abb84bd8bb8ad2be4f99ef0ea6f4c42600f2aeb955e39f7628. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9534d265-d440-4f91-8eed-f19c7322b230.json and https://artists.proofprofile.net/proofs/artist/9534d265-d440-4f91-8eed-f19c7322b230.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 0x0897e6e924619cce067b4e24bb683173f10068c79692f5cfeb4b4c5079f8ee9f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZK6J2375339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b72ca5ccea0942bc55d89a9727e4bf1de46cf381da9432ca18957f364e92c9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZK6J2375340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f47a469b6963a58aa9734861c375de8a11b6428cc1c4a8b0cd8aa130606d2d4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZK6J2375341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467f7e60d3c4119f25ffc382f39a5f5fe3efcf2c49d71fa52e640507abcc3e9c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZK6J2375342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc002237b89d852f7908791b93c0e9e1fe1d85e1cdac8c2b455a351f97a3710. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QZK6M2347727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264726e128934bfb3f1ab56cc951df427c9e3835a0abaf971eaf6ea77290e8f. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZHNC2303387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5346806068f44038e7cc3fe35a9c3c6ba9de44f53ec21ca4332cdff58425801. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZHN42391950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf2e29da9c734cec25c3dbeae6033d0c4de7f85633f8f3a6e1a5c346bb70bca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITFR82200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc002237b89d852f7908791b93c0e9e1fe1d85e1cdac8c2b455a351f97a3710. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZK6M2347727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264726e128934bfb3f1ab56cc951df427c9e3835a0abaf971eaf6ea77290e8f. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/QZHNC2303387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5346806068f44038e7cc3fe35a9c3c6ba9de44f53ec21ca4332cdff58425801. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZHN42391950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d48ec7a45087549abe09cf6df0df0e8e1c448efea502e3e98080c2916599c9. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ITIRH2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c6a3c91bce69c30ac3ec50f39521d1f5cab13a3fed3a969e696f9afa666c65. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZK6G2323350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c6a3c91bce69c30ac3ec50f39521d1f5cab13a3fed3a969e696f9afa666c65. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZK6G2323350.
Solo Dio Lo Sa (feat. Montenero, Chicoria, Rico Mendossa, Mooncler & Terron Fabio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d80e9133474ecade41f0cf2545457f5504f9a0c14173ae6e9c126403b402034. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/IT1O72300935.