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 0x99968535b448f2b4f53dfe7923976f09f38164eec10ab0915870334e26208a6c. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb0113de-b535-4b67-b51a-03ae7cdc402d.json and https://artists.proofprofile.net/proofs/artist/fb0113de-b535-4b67-b51a-03ae7cdc402d.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 0xeea87aecb9ccd5e63f53e90fd80cfc8bfa9d77e052b063bdf564fce001820c8c. 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/BE2GN2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb0f2402dbd64cac5e780d68f59348df93b36e52ae3b3de381024016a912c85. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BE2GN2200103.
Inci (vol II) – Treasures of the Ottoman Heritage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ce7b0c3e5d44b2010a3901f4ac7966143cbe5eb4c029401091c00c8e23a9c6. 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/BE2GN2200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b7c4186a76178a0b9ba17f6381a6ba8b829a798729ce276657dd54a4b23688. 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/BE2GN2200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faedd845b4fe1ae0886b438cfb75ad6875112130b92fd90ec06278fbfb0e7b6. 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/BE2GN2200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb196eb8e4c74b936bbeef3ca0e736a6349432421b5853c859b860eb546ec9. 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/BE2GN2200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4236fa8e32c0858d5739c4d57a608d1ef9292855e91a14c4de80f315746394e. 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/BE2GN2200313.
Inci (vol I) - Sacred Music of the Dhikr Ceremony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94ca9304d572ce324dffa2b669593f402527498daca7a4ea3f9ce4811a9300e. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BE2GN2100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff54f5c1cb19e9f36a510590476c8375ceaff667212543b42518734c06fc22f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BE2GN2200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d18cca4bbb6a710f431ec5cf4dab26b90a74f2400052ce75515561331161b0. 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/BE2GN2200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd05c2b32d66253bb553e57b19e52ea6e0361c71aefd96a46d3a1700b08fef23. 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/BE2GN2200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78003952f7f099b0385b3f9c511e695c2560f22c8fb72201275e348789e32ec. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BE2GN2200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a0c3a325296d35983614bbf4c19af9f7ff751718f202cd8ea00b5ff051418f. Chain 2 (Bitcoin): anchored in block 957210 (2026-07-08T18:28:05Z), 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/BE2GN2200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487fb2b983bc9688571f18f06aebdff65cb36d295f5361037c104b95c291ef63. 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/BE2GN2200209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd040c3bf7b84bdaeeb21535e224a16809f15627831a99d9086f614ad663791. 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/BE2GN2200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed1cb469e9aa2075b669667933cb2652c31514700ec4afc475792747230366. 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/BE2GN2200212.