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 0x72833ceedb7a861a1d1847221eae5bcd91c96c3fefddff32cc972760e9adff29. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7bfc329a-c563-462f-b15a-6b528b9a61f2.json and https://artists.proofprofile.net/proofs/artist/7bfc329a-c563-462f-b15a-6b528b9a61f2.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 0x8a092fac2a42a2a4452c42ecbef84d02297ae1163a692d984395eb707b193d0f. 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/TR0501000926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8accd31a1fa5a0eb3189fbbe6c523db3eedbaf61c02a5a7e1366aae1e69ad5. 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/TR0501000832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723eaf2746ff7cdc16e9a722ea74fb874a2522230cadf7a039bc36e71f833ea1. 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/TR0501000835.
Truva / Turkish Ethnic Folk Music, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f88c578e85c65c1ac89ae8e8046bfbd69828c9e6ac5c3104755aea3b9090cd. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TR3180900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b6b3c5b0c94438bfde7d473ef69912fa09148a78e190dac34682bd8a83ff69. 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/TR3180900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9f95925b74397871452e858664f3fad4a9acaf8f7522f8d6b322031d1098e5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TR0040501181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd345ab20d8bf0ba58f0b10b91af2e7ca20fa2f4a474abbdba76054c99244d6ec. 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/TR0040501182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad96b12830ce81d601851c672b19225d07f8e7c343d6cba08776cd78c227dfd2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TR3021900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f67af36e70db72d69465ae311c429fdaf1b155b3c30e74cc50d3a875306a5d. 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/TRAHK1300779.
Biz Babadan Böyle Gördük (Uğur Bayar Şarkıları)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e2bfc58e0a864b8159a6842508185e3aefd1f05409d2b539a70b40311ee80b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR3021900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f8cb8b603802176d1eac0dc475cf81c2dc0237dfe7e14c757758e4bf33e87b. 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/TR3021900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7592579c8dcdbc90ca5e117767bb424d6deac4b2957626950e00c2cc672dfbda. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TR3021900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a28cd7ec1d00ed23b27a06394b79303362adecfc791d7e3e9431b70c690762. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/TR3021900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c971fe74109ccdea6f92c2b929863bc866dd0abc65445aeabc752e189c44a0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TR3021900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858ae73c02eecfb74ba74a54cb2ff2fbbf19c8452d56721a3c023dbee1ff901f. 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/TR3021900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e471e840058b4a9fa6ac20f159fda8dbd30e4678703bb2110922ae6891f60c4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR3021900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436c7428cf60f698e044f8fffd7bff7fe39bbe16f961e62fad4afb42364aecf3. 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/TR3021900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a344275eef0ed2aa92b9e7da66ae1c6a70a90bda51811d13e3b8c470e957ae. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TR1290601046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19910540dcfff6a4130c2f3a2af84264ee062eee8cf61789f36d9e421b76e10. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TR1290601048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4b5c9ecb2a42f5e745152a94129b4330bb1f86368872c9e35b6340b96f2bf6. 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/TR1150801300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859af73c510120b3613cd61c4147ac1c70f85d8ef46bb26542e684c0441a4ea4. 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/TR1150801303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f999659c3aeba67351341aec63656d1fe13efab11a2e99dac8e92e9222c445. 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/TR1150801308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42dede6ba530c5e3c133a14b96eb061058bb863ff2c81745a522b447970f2d9. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TR1781100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842901bf90dd38351c26fb8690b0e12ccd2982c7041109684728c55dae00d78f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TR1781100237.