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 0xadb9e498fa5ab8e8fc86d01fb97c68568cfa86e2e3d8d3a2079fb9a25a51b857. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a20733bd-fc21-4c35-a46f-c587f3dcd744.json and https://artists.proofprofile.net/proofs/artist/a20733bd-fc21-4c35-a46f-c587f3dcd744.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Book of Lovers / Classical Ottoman Music
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 0xfe50e9310ec8efdf1d8df29eb5cb0f78ae835801097fe5adeadbea855afeec93. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BEE641717705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fcf4f24d26785569d4d2d1e272c5e6458b81bf0f861dd77e52461f15682977. 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/BEE641717706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf0ab08083cb2a5c01bcb1d3efa302a8ff6af580eec037f99d5bf8bc088a1c3. 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/BEE641717714.
Nihâvend-i Kebîr Kâr “Güzeşt ü arzu ez hâd be pây-i bû-i tû mânâ”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f9ddb32052569e950266fc3c4ee15ec36c3d1d7e0bcdbe8dfcc6ee54a58cee. 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/BEE641717716.
Kürdîlihicazkâr şarkı “Ehl-i aşkın neşvegâhı kûşe-i mey-hânedir” / Kürdîlihicazkâr şarkı “Muntazır teşrîfine hâzır kayık”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bec9827d44ff8f9f028392185c0004461e1a928f1886be2ca58134dd8819cd1. 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/BEE641717735.
Uşşâk Tevşîh “Bu cân teşne visâl-i hazretine”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f89f442234e85bf27da25fad313e1072537ef86dcdf64cd28df86774125ae05. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/BEE641717702.
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
Uşşâk Beste “Bahar geldi dahi seyr-i gülşen eylemedik”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e60c9488c91da33dfcd59874c8f7b3ac3e58e2ac516e107a749f19632a7e445. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BEE641717704.
Nişâbur Semâî “Ey şeh-i melek cefâ vü cevr ile inletme beni”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6881653d1c58d84563c744ef0328a5fdedb2c17bbf9208e6aca64b670e18514. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BEE641717707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bf8c1032f2f4400987ed41a0ca67fdb66b047110657009a7bfd84b478f052b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BEE641717708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d129373343415a81e732cdb8dda3f378fc1227e3434eceaba0488f43b43ddd1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BEE641717710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71053bf385dcea7adf22ef695b86a35c15a236a586091189e156eba09079fc35. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/BEE641717715.
Bûselik Kârçe “Sünbülî sünbülî sünbülî siyeh”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62e5ee0a79523bbc218ea0ceb697d7967bbcbd32b0fdce99eba59893912cf05. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BEE641717717.
Şevkefzâ şarkı “Ey serv-i gülzâr-ı vefâ”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138f155c640e0b9c89e45539eb9c429b04c182895aba4ba9dd49be4cdfbb0231. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BEE641717722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e409dc798d4ad6022d12990aada6315d1241c8f279012776fa0aa2eda894a7. 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/BEE641717737.