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 0x40982af669a171319c4ce8a06e62f044a485dca3c8291df285bc189e426dbe71. 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/1f677771-3ccb-488b-8b78-3fca782d709f.json and https://artists.proofprofile.net/proofs/artist/1f677771-3ccb-488b-8b78-3fca782d709f.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 0xff9b28bf93ad2955169c203511f7ddc86643af8e8402260edbbcdf1cd44b0ff6. 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/TRAAA9801618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0863df07972df54c1e0220d4d1dbf22e3f157222e94acebb4b8898d0e768f311. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TRAAA9801622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6e38985acad35a83dddace4c3e3446aede6200150cc13bb1971772e3fbf00d. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/TRAAA9601623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385bba1ac48d3638e04ecdad78d9e5736cb292720b6705a1ccdb1d26eda04458. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TRAAA9801624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf5ff3f9766d0bbcec00568da0f28dc79ac30773c13a456e51895a3a0cff923. 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/TRAAA0202079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1001621c240f588e943543599379a40f8bf6a0e28792fbb3d95cdd10b3ae7a35. 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/TRAAA0402299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c31732dd563790d43c28dab8fb0397139c8cf0fbff6449c84d97ab923adeea7. 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/FRX872408051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e4cdba874e0077369af8d81dee439163affab177ba3c30e4f3737bc47e63f3. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TR0862500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4582525abafeaf66ddb493855cead48d2289031f42d90605fd11766470c08ccd. 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/TR0862500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727edc56311fc94c3f67fe7703cad670508710a408c2257b7010709dda08af99. 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/TR0862500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283ab642c6369503df9c9737175ac83b9731a84d5d381f849e66e1e77c2f40e2. 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/TR0080600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6f4dc8950f836604ac3097b94a4eee92b532ae5558d936aa6a8ede1b7f5323. 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/TR0080600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20b649e9e50156a58b97486cd8332598c8702fb3c60d8763c7adc01d25d4d89. 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/TCAFW2182901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98d5f6b76d9f13db15968f5ea8045900e12b5a4a54bac85a9a4f3abe004c946. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAFW2182911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbe3d550bda58848e6d2bf32429c21305b7594cc9b807c701b154e31e7e6fc0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFW2182919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38acf3f1914f98761c92d17fb5bf8249712c1a51fff6dcbb4b4571ec9507dbe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFW2182990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae655a3dc5bd9a4f6aec528b613dab34c59fa403dcead0ac0fc57d61c7e5285. 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/TCAFW2182883.
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
Karpuz Kestim Kan Gibi (Gebze Çiftetellisi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41854cd1194ee6eb16b099d1a0e59c97156788eb024f5d32f2709cfeeae0e70. 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/TCAFW2182924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1104cd74be9367e7031dbbb9297b20748ddac9ff086b6ffb6970d4d4bd6e067. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAFW2182932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2224fdcac6dfff39b47250ff412b9b164b06e3cc6cfb048cd3492639383320cb. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/TCAFW2182939.