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 0x2377ce17b92e2569148c480542cc5248c3b0cfdf9a2c49cca19420efe841ca9f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2500eec-e5be-4e8c-83c4-69b70ee58e6a.json and https://artists.proofprofile.net/proofs/artist/e2500eec-e5be-4e8c-83c4-69b70ee58e6a.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 0xe39386e6dddc87ee1851aaee6e2f271db31894dbf70273b30c06d07df5886151. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/TCAGZ2320558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9deffc43204a3d7bd0aa735d07bc9b85ee5c7ef0811b1b701a58ac343efc0e6. 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/TCAGZ2320586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd722745f04f17f0b68f6c9fbabf30ad592e4ec3ce5cef54639279a469039d946. 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/TCAGZ2320590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499e77b36014cf9e7eca88b99c02ed2cdeb75dc2f131bdc664808c49cb4a8c10. 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/TCAGZ2320596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea313a1e6356efaea02aad0b8cb34c0c799183fe578ba05611b17ee4f12708da. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAGZ2320609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35256ba35aa2bc5ea7663e2a82acc1f9e5490d7c802529ce0a53d9981e391cf8. 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/TCAGZ2320650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829689c47131ee2714cce191adb31e846b9b81bcc5ea68a02ddebe7a534b9742. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAGZ2320673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b0d1770657553644ec4b15a256dd19e46b94b5db5d1d846705218b98502824. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:18:21Z), 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/TCAHA2351972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c96e222a2d6ab1145041cba58534133849d2c753261b15bcfe5566c889eeccc. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:33:38Z), 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/TCAHA2351973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d6b1bc896245c3262dc4a49534112260fe4acf0d585ec0c9faaa9f699aa8c8. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:52:33Z), 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/TCAHA2352238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6feb1023d7bd9b3d80e18fb7395d17d5bd5d0ced3ab512f1a81316b3bb93997. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCAHA2351985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2511d89e8bb359967fe9aa680b0710a15122d2e03b46de8fe0d3fbc894f22d. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAHA2351991.
Türkistan İhtilalcilerinin Türküsü Şiiri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31fb38b1fa435581e770713c41b61d159b5cac8f08959315db0c3136b58fc3b. 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/TCAHA2351999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79279a550b2cd41d5c9c7aa248b397435893efbf7f0bf86f540f56f1d1ceb420. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:38:19Z), 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/TCAHA2351981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14693f8301dd331a67b44b95b5f1860d9e2fe0229c5f432795f4326c97b2d295. 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/TCAHA2351983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02fc92f270f0c15cc0db7e56530c269c8baa63e4328d1ca755bbe1bfd9d5339. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHA2352002.