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 0x17e815f4a3763e01ee127df31b6db2472f82d8c31da7724262e71a0ee46b49ed. 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/76000676-ba1a-4760-93c8-ef15f1d50415.json and https://artists.proofprofile.net/proofs/artist/76000676-ba1a-4760-93c8-ef15f1d50415.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 0x7cd55971d5650085d58bf7d58d3d76ecac4eb15213ca5cb92834592bcd70aa99. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:36:54Z), 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/DEPW91306301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625eb768e0945d6d93e829c0dbb28d190f61ec198abfffae00c77e07a4942aa. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEPW91306302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2114c303641d1ef9e04c7bfad0b9536f428a68da52451669fc8acdde6a39171e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZ651302873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2a958234ff97ffb2b19bd6e72c990e06ccef0c35e8ad29c5e1e291259ab8ba. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:48:33Z), 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/DEZ651302877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b52283ab2404e020f7acd60ae457c370fbac5d66c3e794ccae7d1d567c8ae9. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DEZ651302881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295484a0c95add457b69d1d9d26cae691b3da0a00d68ef705e4ee4a8f463df28. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEVF42000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6ef78f3e46771c0b69b7be3f4c9a7a7b5e7bb88244e987357878dd9009c7a6. 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/DEVF42000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c16cf0cdff36e2191cbe68304b6f4656799482a9f2fd6e5740eebf63e8c5ff. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEVF42000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff5b2528b3fffc72f583fb6af90378d643dc69ae121985335e921da4991cede. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVF42000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8233e0d1bb9b4e09f54dfc2ef98c871dbecbabb2a7fe1bbcf71bbe6c392c8698. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DEVF42000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a4157666bdba9fb444fe97098c52a59af97a2e9f155be4680667d53342d79. 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/DEOV42201348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d349d291d37787bab1cef2ffaebfadac53813c807b0368e140d2a093bf44527. 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/DEVF42202271.