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 0x4ef534571cfd8e8f2ba48720b7658f76a9855987483da5fbe404559402dd95e5. 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/4b582856-7036-40c2-920b-5d9ac970321d.json and https://artists.proofprofile.net/proofs/artist/4b582856-7036-40c2-920b-5d9ac970321d.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 0x8ea98d2353d155132dac34e2056ff2c552045b391fbd4c06dab0ecb19a370ba1. 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/USTCG1000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d5bc1cf1f3ef790b03b97fcd7150b5b23634242e9d3cac58f3aa6348b0e945. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:23:19Z), 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/USTCG1000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c115e90317cd4f50a3d9f1cf51f3d7da88717171b98aa5580c95cfb8254138. 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/USTCG1000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf4c7d7b758e8aa231285874edf16012b068c2d448f042c1e73935284cf2ac4. 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/USTCG1000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0960894db3f508af71774b434dd7491f97fc99bdc3f168d543cc7107e583c8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USTCG1000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbd3631f34e5d799427f7f600b74d1a6a9b2ccf45a360270593f387e88cb31f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:15Z), 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/USTCG1000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21bace16416629c0b5e59b20ab33b6d0a09b8b1312b5b755f482adb31bf3c24. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USTCG1000282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b27d242aaadf60a8e660219072845407d96f61b62ac6b1a9e986ef8718c5cc6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAAU1110510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3632029a54e9cda89bde1b8a2cfe885f70859d716f4315353e37780d1afdc369. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:41:15Z), 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/TCAAU1177934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc9627b43242bc8b871da41655d94b92e4649bddd275b51366fd80190e5f36a. 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/TCAAU1177937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5586a38c31dc98da539559503bcbd5c5f634f051bed6b1fe29c03fea181aff8f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAAU1177943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44918e0a3779edf5b6b013eff1c3845641f95b0064eacf2ba9ac9c0ea9104e9e. 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/TCACE1533698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51337d7169bea4eb5c7fc90a610aa90b699e3bf55fde4cd400334e8e572685c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBKQU1636703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0995c04aff8e44474b60aa21873bfc8bfd0098aff893babb6254dc86ff3bdc7e. 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/TCAEC1951657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814cb8db5b5a68a03b101b52a774af3bd15f690499fc53512dfdff10ce30e36d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBLV62418105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd24e59b68f10cdd6f7cf28f3eb4a52b6296f9a43531dd4f923261eeb2012cc. 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/GBKQU2512376.