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 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 0x3254af00fda5b5d73e7c2e93d1064d8d68d4a663d3f201728ab9d0fcbd327be5. 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/db451ca2-9774-44d5-831c-3f35d55c0880.json and https://artists.proofprofile.net/proofs/artist/db451ca2-9774-44d5-831c-3f35d55c0880.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 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 0x45affe640376a7415f65b26cf47734a10738285874c866e85b325447d919a774. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TR0151000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa984c61aa500d14d1290492365b109fa5a43ce6473294a43c15130f1bb6f0c88. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/TR0151000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb88d69eff06488387b515cceff8400f9d518cf27af1eaacbe48f4f95bff364d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TR0151000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20ee86f315d734bc0be7edddd0eb49aa35fe5534dceab8af495d44da0f6fcce. 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/TRCCK2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ccd4234f21f3ad7fbd0686d2438d6d3adc479d2548b6ccd6a4e4b9edbb49e8. 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/TRCCK2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a761fdd57dde3afc4003762fe2804a9e5544f6a03e6e1b3285a65a24c3481. 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/TRCCK2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e20f0d5f1efbb0311a9d3731d71c8684c0bbfdcd28a837329f3fc058c80fe5b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TRCCK2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c157cf65558aaf75baccf9ecf9d2070011c9c1330f4b3778a8369b377d1dc4b. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/TRCCK2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67387b3d3a1eff36397f963078b035e89fe7ac2ca6379ac38bc11dbcad6ef209. 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/TRCCK2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc5a67d7c3936ce73dcc593efb047acace0d5f37b4a5231e1cd575907c87c2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0331409896.
Sirûdên Şoreşê Yên Gelan / Halkların Devrim Marşları
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f60315dd76fbd677641e9468ae033ed59c8723f191cc33fc29c7cb4fbff81b9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TR0511704073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d71c73413103570583afd6d783039f07c7afdee1fdd4bb0b44ef71e4a5f0e1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TR0511704072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac0e77cb98701442c1e3f5434cdcdc52d3d72a81c89d7362bcf49009880dbcc. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TR0511704071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61388b05e7d287cf6206a9ef697a703b0dc4a1ca19973deda33ffbda46e0485. 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/TR0511704069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfb338e8db380d2bda4b91ac58d16ad625e57190574b82f1fa281db9c11e8be. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TR0511704070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac11923244f8116bd0b53677c71d1818767a8f674eb7689642925a2a0a6efc9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TR0511704074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bafadba1719434928068c37f2b90f6ad0007a2efdd23e90b8d8c4c458fe7d67. 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/TR0511704068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0166ae33b8f1ea243fb9585d9c4153f4afe8e7000c0fdea318d199416f8c6dfa. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TR2200900587.