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 0xdfb373f34513fa2213287d5fbebb653dc693e20abe253f02f5e615151c56a0f2. 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/06531563-ad26-4a22-a0d5-2f547d3a42be.json and https://artists.proofprofile.net/proofs/artist/06531563-ad26-4a22-a0d5-2f547d3a42be.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 0x5af03cea04679312de01225ca87b9b16e253ee2321f9d4e610ad549c9f1519fd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX281951542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047277a4fc5054a227e29211cf9fcc6abf52d9ff8e724d671d4c9ab75f2fa5c0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X42061472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb61ca66d89b0d884350ba701b2af867ecccb7995f4f648b7ce2fc6cd221b64. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX281947680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3309c31a80f7316e01bb98ab255e4e4ac6527f24a78f09b7bf5533b0774962. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/FRX281947678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310dd7ffe03889b04b603313991254d18368b4aad1abfbac31d9da538a8ce334. 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/FRX201604042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd06e13978820d36eeb594c4a897fb1dd9cce024d1d3a04c02da92f7b992d7a7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRX201604043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc907d755f580907ff94a1373973f5b146a257dbdaf79bacf9d7bd82cf919533. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX281951543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993ef554104ee51d3e125b1be4ab07607cc493884c589578dfdea51689e1fc7f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR59R1815916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2bfd6454337b0a2d635dfd08068c900a368037edc9109f7ff3cb0ae85d5f5d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FR59R1815919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4523959f376b06d4b2d28d87cd04af4adebf0b62525bf7232ae7d52165052a0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FR59R1815923.
Winda Coffee di Matiti (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e727732bd2628d950e59f8a6e5d811488807c90c2835357ba959c7c2d6f0ca. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FRX282145720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6fe506bdd0f9ed3af8d7ba931d11c621001294b8fa1a481290fd7768572bd8. 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/FRX282145721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a54331f7d476df30797c80399edce1f178bf8b7f11e5a407f2ea1219a08f23c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX282145724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccdab3099770eb1e546c135772cf938392201ca7bdfb441a4e683c5ecd27c13. 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/FRX872122697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4fe3e69b0dd23e1ebd509467c5668d2c13b91152a8f00f605e11a939a7b0c8. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FR10S2211961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05648a638376f791fbb34dce0dadd9af8564bbba61580db8def1c97091eb1c1d. 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/FR2X42235830.
Nirwana Trio Dalam Lomba Cipta Lagu Batak 2021
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1a56e819e111e469f2bf18c483377a13079434a8b3a7944deba4cffff09bdb. 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/DGA0R2447994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fbc9ddce22cba643f45bd2debee0f9a22f0a9be4255a016de916e4e7576e41. 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/FR10S2538849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acca459a35ee470caa091d03882b64ab9d683d32c3f89de8eea87c44bf22543. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/DGA052517244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4909eabe3f45f266540f62818a98d6f0059661f0ee0036f547a71e735df2b2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DGA062500280.