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 0xbffc1dea3ec7f3892a0d72e5cdf561017ba3683864f76fdfca43d1f40232fc2b. 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/7de24aae-8008-4b18-a54a-8dd55dc199af.json and https://artists.proofprofile.net/proofs/artist/7de24aae-8008-4b18-a54a-8dd55dc199af.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 0xf25bfa75bd6f5846a57bb9ef9afab5b71811f3aab1d6e08c4e4931328cba646c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:46:22Z), 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/USUYG1391934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98301fd10146b54b19965895f35365ad400a23b926165d53b02a27721c5555ad. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTL92113427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5309e6c865a8813b65e74f6999362c95db3b1bd00f067316e27e6cd2daa8ed62. 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/QZQAY2287999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50b22ee77dea3d54792fb3672a1fc25a4f0d264ab5f52823acaff4e5c97ec15. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZS7J2299099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9307a0b21ef79f0c4b19b91a5e3953f19dec5151edad5fd58ef9ec3e5f86ae1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS7J2241381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50b22ee77dea3d54792fb3672a1fc25a4f0d264ab5f52823acaff4e5c97ec15. 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/QZS7J2299099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc303779a5141ec16e4076965a87d4dca147d2327a8f2c8d45f48594c747921e. 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/QZQAY2397661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a60f6af312653f12783de506ba790cf0d5168ab2d0edb43ee1588ce5b0e46b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZHN62478418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549766bbfad5f72e869ebddbe59d93f0d5878416427d970f7e6fffb8bacc419. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:43:35Z), 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/QZTBE2523142.
Hall Of Martyrs (feat. S.O., Ruslan, Uncle Reece, Dru Bex & Jxhn Pvul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aed88e2a9b17fc73289ad807a814b7f1b98291169329d7d438bc65aaa11d5d. 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/USACX2000809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9f2f8204b57e49eadd860c50683afd4e829493d5a3b9c2d18d56aeed985228. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMANG2218070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a66e15fb6a7495129aaedb2cd664e3bcd59587b0b73af26bd249db381fe1a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ8LD1994950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967740b575e6242b767fdfcd7d0a48b7bc08f11463e109c908ae725d84601a70. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1304111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebbf6900008d40ccd14e9d078fac5e70c5e7b5c2870111599b2f63f93722edc. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZQAY2338010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd11f144d8df548834d1aec85b11b62bf14d7b34f061a453f49a535c47b157c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAEJ1959062.