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 0xaa9de8dc78c69a4e6f6183fb01d5df92ba6aac05dde18f214bddd495d74550b4. 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/b3492303-74e3-48ed-b586-bcec9d0e4d83.json and https://artists.proofprofile.net/proofs/artist/b3492303-74e3-48ed-b586-bcec9d0e4d83.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 0x9acde0b5904b2bd374a43e2044b1314cbb11fe78f807da821a03e8dede787377. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:10Z), 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/USHM81851673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90826bf58ecdbba1b5cad3fb988b8d81e3c236d1f1b4bd72d62ec4bf5fd170d1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM91600464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778600238093303f0fbbbc728e2d31dcb9648977c01c2222bdd1d7e94dedec32. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:35:14Z), 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/USHM91600468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3227b69c16bf9f6f091e47d886b3045d1016952c5290b14b049a320c1c6aba25. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZAPG1836979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357dc138a4e758e807bc39c5486369fd8bffec34ec78696c36c2ef3f51f886a7. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZAPG1836982.
Sinfonico Presenta: Me Compre Un Full (Peru Remix)
Sinfonico Presenta: Me Compré un Full (Peru Remix)
Sinfonico Presenta: Me Compré un Full - Peru Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3961d9c0cf30f775f9996a656406bab9d8e83492ee3ec0b633c5829ff7dbb262. 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/QZ7R41851971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e5a041fe3b1a396156c83bd312203c6fe811d16784edf22b66cad6436b914d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G1923099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29ddc8fecd515fb6798a6e818754ffa1db95a5523e7634b22b8b2a8d8c68407. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ES71G1923098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79edb7e1fec5637eb615d28082caa084507f636f2b76fcc419d7bde65fc658a5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G1923096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d13c39433d0b0f23dda5f0408f450bd52f9e09cc9578496727caa87ad1f7c. 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/ES71G1933317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2738b5215df0e3953399cc3ec9afe93f81a71b67aacfc9fcc9dcb2f2195901c5. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZ7R42053956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016a6abb68ba4808a5214d53a01fa8371c449060fae45d2ed3ae88af094e2ce9. 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/QZTRX2224694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156dc37e22b83dbb1c6a7b6e63deddfbd5dbe699fc5cbfca0dd7fce707c9ac4c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTRX2224702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec22db74d788195b729f1a4f986944aa0abfef914c75cbdef49a10653ba73bb3. 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/QZTRX2224705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a620ee6d525da2da81e5fd040401c6032b1c14b330940acb0b90402d8274d0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZWDW2454286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a7f18e1aa0b3affecc030a63c3ff0490200d66af13bbbadf0268abe920ec18. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZWDW2454299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda90c1bb7b41d706f46c5b41de0b4c085fdff55d23a753a241f9151b2c4aa0f2. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZWDW2454285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21dd21860d45d6601b7d67580854570bef3facebe4b78aba1d8186ecada5cef. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:27:59Z), 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/QZWDW2452095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7308d941a3b28bd06f8eec148aa42d9bccd95030d4a6c7d5da91786b26f7fc7a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWDW2452098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd86b3dc726f56052726e94208fe8c0b63ffb0c4787d2ea4eec5e38e553a94f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZWDW2452102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fb782f7219f53688fb2bb0d52474533bc06687e4a747695f2381c628bcc0ed. 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/MXF152000227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5561be0d935c10ce8a1be1e31006e9d476a5dd8cac452bf88683c741675ccc2. 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/QZNJY2317273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5561be0d935c10ce8a1be1e31006e9d476a5dd8cac452bf88683c741675ccc2. 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/QZNJY2317273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4510789e44c78524f5844721ce3cfa43f7d1e468e952b4dee0a1a5cc89f4a612. 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/US7VG1627546.