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 0xf47888140517de13f18a57043c77a0370d13dc20eb83a85dffe2e377f88fc8e2. 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/55939534-f64f-4665-9bd0-d5863a140554.json and https://artists.proofprofile.net/proofs/artist/55939534-f64f-4665-9bd0-d5863a140554.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 0xe87def895aea94860ee1b9009c5a7b6b038343f5ed0c2eec53e4c4521505d3e0. 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/BKCMX2400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac71d3e2eb18973770821933edebed3133844a396a243a1b62e0f10fda85acc. 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/BKCMX2400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc7240a3280bd15daf7a1c1417857ae4538682403a96e20f245c3614aea08c5. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/BKCMX2400289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171978857c4bdac9c591bd0694f719397ca9814da58da56a1f220e7cb10139e0. 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/BX4IU2502093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f228a8dceffc3f1cd3ff06dc581d17fdaa981a5051fe6a137f82aac258b64e7. 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/BKCMX2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a019912a77674667f23ecdda0feeb00cd3e8d4988ea5f3b97d74854439f72f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BKCMX2400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87671a80815348602e2a20aea688bbb1d25488ef5c60844f181eed55f7930346. 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/BKCMX2400457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7c50cdeecd5e1dc5189830d94cf18da3a32e7fbe20b057d3143d144528038d. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/BKCMX2400343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ee9cd5fbfc63a2c758f1ac6f4a1cfcda26a93ea7875d930ddcd213efbffda7. 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/BKCMX2400329.
Mtg - Isso É Amor Vs Fala Que Eu Sou Seu Ator
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc371781da171e59db50fae2b07b5389c7dc2b41c97d6cd67baf0a74027089122. 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/QZGLS2439722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dba94112856f52db843d4de1724c0f899f008cf07bb441bffca29689c14cc60. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BKCMX2400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6aceff3817ec88cbdb3d8931684c5e73ebf9d470aeef973e1faf74c4105d72. 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/BKCMX2400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe069aab8719641f7141ed51eae5dc015ecb1f6deb1409e1097c62d85846494be. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BKCMX2400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe938bae35ac05ccf49d7d3dd6df7e17ebf0a9570547b831ca5b2010d4058f01a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BKCMX2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9526b86923f65f019db7b070a21095dff2e6d537c9dadf4660b34c1b7c4f2189. 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/BKCMX2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742d99c064374506ddbdd38e1d95f3413dcbee46f07df8390a44d1f5e74bb257. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BKCMX2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2001f2c8fc36d35fead2eb9c90330e8daf06a1f36f4faa1f75992e371b760029. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BKCMX2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315b54206a787fb7e7edc9b31763048b145f55f526e79fb9cb7a841fc87db8dd. 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/BKCMX2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c142df981f3dee42c2ab36980593db8b1e8c91ee876c016e9ac9c12778265a. 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/BKCMX2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98a71a6f38c6a68ad739353623f5f10b8c749571c1ae7de25b3e629bc39709. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BKCMX2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aea20b410a73a2513fcea42deaed734bfa3c7ed619f1a48ab2e0b2d76a4e82. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/BKCMX2400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f08b3c643a39ddb5d7d6eb21350c6da034fbe26779a26e1081d3fb9ae417a2e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCWK42400015.