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 0xea5277a47541d4b1f36aa9ccc3e4c73add9c61e28d33bc7d105839f0f248b0f0. 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/d24b3781-d795-4e75-9eb1-89860f2ca951.json and https://artists.proofprofile.net/proofs/artist/d24b3781-d795-4e75-9eb1-89860f2ca951.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 0x917d29d0a0a97c1f50b2ee1410403685cd8ad864e0c97321ad80bf992f94bbfc. 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/TR1791400240.
Baharı Bekleyen (Bir Tanrıyı Birde Beni Unutma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fc4e3a9c0a765344d02b1b8e55d1263d3de2f4fc3cf671e7ad6127b875ee71. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TR3021100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ac274992d15abafc9a4c2d4ed366da15b213c2c34f29613c89124e7bb87edc. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TR3021100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fc4e3a9c0a765344d02b1b8e55d1263d3de2f4fc3cf671e7ad6127b875ee71. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR3021100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ac274992d15abafc9a4c2d4ed366da15b213c2c34f29613c89124e7bb87edc. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/TR3021100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9828a2e5e1911acb6494d54e4636f0ca8d34019c8e4404283ef34e06863532d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TR3021100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08050c3fcf4bb3dde47e32f4f894b624e9715ed4fe35523ddbb6ae29949ab2f0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TR0140500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57da024347b3b75d6e06105a9632778a27b533bd8b0d77613cdf9ff30ccf4554. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TR0240602362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c52eea9ad5f3f3a33b982fbb4e4fa8d036d23e777ed52440f80de7d33a346f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TR0240602367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bdf7c83d53a7bf9b442320ace0da3155b132d65ed404b04ce670f883da6149. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TR0240602358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fff0d71549d14bb128b1845d3adb2178ce2a44dc3cd5589ee31d5b5e8776040. 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/TR0411404896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08050c3fcf4bb3dde47e32f4f894b624e9715ed4fe35523ddbb6ae29949ab2f0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TR0140500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085427dcf4e600f0044f4e3543a7b4212e9b6f5aca4693a06d6b8b30b6603477. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TR0140500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7e64df32d9d07142d0d7ceae84569e2a127a876e276e10c1ab5a21b9af1e7c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/TR4262200752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d0a454f2bd4482dfd4c742601a75bee463e9ff3d3309926b755e93b13ed627. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/TR4262200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82d14c765620089a61e000a256be95117f6282dc78c14b4c64f6cb9b3dc3408. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TR4262200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0cd84ceb92a87634bc9ea1b78e51327df2f8a433421f08ffd863da28ecefbd. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TR4262200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019c5d1b89c1e2d540b6189816b9e23fa4d35f106d887034dc482e6a04138b6b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZNJY2500252.