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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa5c7fac0ce102c6446a1419a46060b020135451a6a176cb54a6c8401bb3551. 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/35cc56da-643c-4a47-ab07-436c9545e44a.json and https://artists.proofprofile.net/proofs/artist/35cc56da-643c-4a47-ab07-436c9545e44a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0534b7cdb824420244fb5baedc519e3612b0fb8a8cdb34b59e08c973df961513. 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/TCAEW2063675.
Well Loud / Friday / Weed Testament (Weed Medly) - Acoustic [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbaab3cb7ccc5e2fbd74c5b228329d09b6974ee043228b08832aa36de2031ec. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZMPV2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96adb8760187d59e3e207feab8b0b48fc31f040b36a7350ea4b1d9576304ef3d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZPYN2360782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112140326608c60b0e0106d0a565137e4b70d7881f9735989a7648ee91cb8201. 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/QMAXQ2309861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e9adf527c5700f0c0964d7292d27322b3f7d2fe63d50ba7bb3bdb2eb0582ef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S2537668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18670ed91f1d60990dfd29dfc10419abbac61cd3476dfbd0665c42fd170f709c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:57:01Z), 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/DGA0H2496436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc6ff12473eef69c552c4fc9b31a62d3ceb009ee19f315ac4e7e0cc5795ff3a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X2589600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000154ddc7d6f9ac1b4793bcbf5dba0f9d95003d797dacbf984521920fb4e14e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:01:56Z), 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/DGA052437919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359b7060b84ce18d5314f1ca5d8dd2d4d76d52afaa384126ba662901278505b3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR96X2553758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f25ab21000607c5097a368587d15cba7c0f9ff18a1ce972c5be72a13f5d0bb. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX202524442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1412e093a55ce0efb3bbd2d9ed41f20b353c9b34b5bcfb6363da0c63947f6547. 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/FR59R2070949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb519d17e463724f286c851cabdc3015ba4b6e2179e659c9814028da5562f57. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO01507990.
Out Deh Rough (feat. Tydal Kamau & Loyal Flames)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35b5b02ea15a3fa4e38e63fba40cf00196fc936554371150f07a3eda8a329ed. 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/TCACZ1768605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370eca361bafe61dad1a442706eb86afd0073710f3c84159865884d34d10839e. 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/QZGLM2397750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6302da0238f1d8ca8d1633404d3f5d0807edf08fbebf83cdc44398645df8ced. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USL4R2205530.
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 0xe5f7d09a93913695502c776e8079dc3f2699e8ef89970ea1329410ffca3285bd. 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/USHM82305347.