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 0xccec9e9967a1f73e10181c32dc0e656bee354fcc4661d6d8c2b2497b762c417c. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1657fbe2-06a0-4177-8fc8-1fc443662d70.json and https://artists.proofprofile.net/proofs/artist/1657fbe2-06a0-4177-8fc8-1fc443662d70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Seventh Kingdom (Hazem Beltagui Sunset Mix)
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 0x30d9dcffd9935350c0250f3f3c3144c36585126ab2546c0c046d292481a822bf. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/NLD682002120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e56f64cae17cb98a290cb6c7672d1c0cd5e5aa92ed2fc772cf8fa30fe614020. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USLZJ2032827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa130026cabab17438fecadf30066e26b4a50c33b893eb9e03418f157624389c8. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NLD682103242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ff00f57a3458069989e374627ae6fe11ceb24e8443cfad9b2f5383a94298e9. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/NLE712100967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbaf321ea7d742b7e8667e74249fe14b43c5add57f9cc1d038a4239af008c1f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GBKQU2319939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7672c6009461602a6638746596f4e4f2a8d79f95c27d01ae6582f44ee3f5591a. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBKQU2330632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbed01e7b8bdbccd07820f1293936fc237feaf1f70d86e20940091781e8979f4. 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/NLE712300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96c7648f11150d5e0f3e0fe0ae9fc8143fd55a69bc1d4e72f018d9bc87e0ad6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU2514164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cdb50db5cd006df3b88dac208a83ba817a9cafc3f3d1caac9af3f732045259. 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/GBKQU2514165.
Seventh Kingdom - Hazem Beltagui Sunset Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9733de06edfc753054cbddf7218496fbe8c9d3715fdc289d8f279d2351af2f42. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLF711505125.
Time Machine (Sunday Sessions 052) - Groovematic Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0465d94841017b4a8c44cf51aca916a6ac5f4b9a51a545522841f696953ebfc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEQ692100773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941df0d280a251d693cc9fb3efb1bbad4e6f5438f6f79e18528715d9e73c0024. 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/NLD682104685.