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 0x495504382b2bdcf862edea2ed685f5123522003630d1c826c836c1410207525c. 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/ba25439e-93cb-41ae-8ff2-66f5e25fb46e.json and https://artists.proofprofile.net/proofs/artist/ba25439e-93cb-41ae-8ff2-66f5e25fb46e.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 0x9a59cb5d6e57521b9df3566059ee2d7e09b578f82b68ac7ed9109df7fdf7d0ad. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:26:35Z), 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/BXUMP1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c2de8d2684fa132e51a30ac7ef4e30f289dcd7d3e7e58909d8ab67baf33226. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BXUMP1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4898df4f7f8d4c574082bb5cf591242caef26970ac83c7122a9c5a9bc4e66aed. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BXUMP1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4898df4f7f8d4c574082bb5cf591242caef26970ac83c7122a9c5a9bc4e66aed. 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/BXUMP1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c035ab9939c86bafead06051c65bb18063d63c9795a552119871813a70cb01. 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/BXUMP1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc7cf94a5a5ba56edf2b8d584d317467448f45640f0dbccd3a277c934d8bdd7. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BXUMP1800016.
Ela Me Chamou para Dançar um Ragga - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadda0fa76bc95e745258ade98b3002c6eb39389cff2e2a54dee5a9f84bbb5737. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXSSW1801921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7212c158a793c373e569ccf0aa7d44d66ab288a3addf5721d3ccfb3524bde65c. 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/BXUMP2000003.
Ande / Ela Me Chamou para Dançar um Ragga - Mateo Piracés-Ugarte Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21952ef729266fc61b6dc9878281dbbdfd25e231e7358313c9bfbfd4f4478cbf. 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/BXUMP2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a0f6697cc7838047ac3c429792cf08b6274e15754515f8e82a7e136f0ae11a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BXUMP2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842b611db946f4db074c9a488c2f264530a539db654e42e08ddb778533537c40. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:07:40Z), 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/BXUMP2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037e3bce9202c8f7721639b4dc5cbb179aacdfbd1fd60f6ede7288a90b666c3f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BXUMP2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4824c521165c6e8e17e909e546d990e78a5e43180389481f164492e5b38e65. 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/BXUMP2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedede8b05f87cdaf5095248798b78873f2aa77b1282ef846c0b16bd98c8e3e32. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BXUMP2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc905f2f9c01431d3848882a1ebf6e80c9a7b48937f66db81a15ce2bbf5a50043. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BXUMP2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d646c9948c56998180c7b23013360032bce0d0434b564bb8fd7536652e73ce5. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/BXUMP2100008.
Andei Andei (Incidental: Le Bolívia) (Ao Vivo no Sonastério)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec9571aa2d8c940352c62d36badf0cf42160b20b59180074963fc2392a33ea0. 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/BXSP62200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb944e0a3a73620d47142b6c5172f4cfe4a87fbbc9e68eb431cf79f2b5bcdd548. 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/BXUMP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9925f36c807f51e3e525659b6cab3339b820185440ea2634ebd4b1475cad8755. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BXUMP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940c2ac2a69841500a4e9a2172e29c4b0033b2c7667c0a2d04953410aa88df62. 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/BRD1E2000121.