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 0xff2bfd780537e8128c1fc4d2704f8b84e0604485e17ac5c41ef047f05ea5b897. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13707ef3-cb22-4f8e-9dfb-ef73dcadeae1.json and https://artists.proofprofile.net/proofs/artist/13707ef3-cb22-4f8e-9dfb-ef73dcadeae1.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 0x434cc4d40a31d295d4ad3f3f69302e05e737c7ded415321aadb41fbdc3712c6f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZCE61870394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a555bf8c5b176774fb008e7f4f9337692be5fc5db913336f01e8cbf8f06bbf. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZES81917300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba2f822ba30ae7a493d51ff901dc1c27a2fba003756b23bdbad9ee31f848f81. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZFZ41925415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be346389ed20d3bac543d3102e5d8613d9bdb1afc5299702136f99066b10707. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FRX201992148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6dace0bdec64c56120ac61e35852ab98e93e4b47ebcf32469efdc43a7c62a0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/EEHU32000093.
Mutluluk (Gülümse Kaderine Orijinal Dizi Müziği)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495b718c6e201b9c43f365bffb427e561b52b2ef94a44cf20926fc24795f9e7d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/EEHU32001388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3801fce4cd3955169c789eacf5ab3f4f0ba7a98b737aa7aa7337e9dfb3ba26. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/EEHU32001387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b8c09c93084bf0cf397a6ce66b0c1cb179f1e46c3347c495f199bdc7941440. 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/EEHU32002027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f20467ce1975629e5bb77b34724248322cc8627822ed92e8ff4ce397e29d48e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/EEHU32400489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a3dabc935218c9609dcbd0b12e78da46107162c81fa4ae35dce0a979f6ac95. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/EEHU32401285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1614ef7806d8a3f6ff35f2cb6462c54c79bc375a3bf6af7deaf82c2519d2397a. 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/EEHU32401362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf18ed7d6331a80e3e19c423a976a956bd6f93d5f6404c7710a78db58e21a05. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR2X42588201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9067a534c2149ca9d6a97f1fa0dbe35fea18f46d36b06ea3f244617696c43b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX762549950.