thumb|The giants Fafner and Fasolt seize Freyja in Arthur Rackham's illustration of Richard Wagner's Der Ring des Nibelungen. thumb|Giants Mata and Grifone celebrated in Messina in August, Sicily, Ita
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 0x865f25622466580eea8871e88de68c09ed22db90ae31fe3fd172bb96b8d73538. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51261c13-5552-489b-b745-81c7ecdc8686.json and https://artists.proofprofile.net/proofs/artist/51261c13-5552-489b-b745-81c7ecdc8686.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3171579e377e53d118fc2d49b7a4715ddb293f90dbe2f192ac938cd5d7060509. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/THRSP1218026.
เจ้าชาย - เจ้าหญิง
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1eed7ea5ab9df38585e7fb13beca7eb5ca62c0c016b1da1720ec731460ee03. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/THRSP1218028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986bc997318a18fc8badb37d8d4da2451fdca82da8f290ee59e7b0cec6ea4103. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES72311131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e50bc919e24f9ce39f66ba16925432714fc15313ccd855b135fbcdf3743777f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLUM72301328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf294783734252fb835ddc24b1e617bfaf9fe21d2e4dc341af1443976aad44ea7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLUM72400922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c58b0048d0b84103972f929a8773f30cfa6cc7ecacfda805953dd5394301822. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6MZ2404735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7d9643c0cbef9e698f9f1019e967de4163a46e858ddbc7f8887d222bb29039. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USZXT2455460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524761f1890a2773626c8e57796ec64c471e5107f5ce248a55d933cc5eb1274e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFJ2549152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84280028fd45499c2c8d2d32cff7f2b1b360a499183e627b3d2681344529470. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2334717.