1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc956dade0c2d362a5acdb01e8b1c304ba63abdc24fd267b97d407e77e8914b4c. 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/562aa71f-6102-4d98-801a-c36cdcca59c4.json and https://artists.proofprofile.net/proofs/artist/562aa71f-6102-4d98-801a-c36cdcca59c4.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 → block OTSBitcoinBlock must exist at that height 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 0x4f11bed63761c76dd5263a72e581e6c538be4885296e7d70fe9a12d8e4b565fd. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAGB2237209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acf639a6d7eed51cb5e64a4cc010ffc607b0688c2a1f7b6961c266f90e54350. 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/TCAGP2274252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1458a4b6e13aa9661a2483352b15d9c6c939e7a17384cf6c8aa8cc1fcf24a40. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNJY2346613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778131e7085c265c2540848a901a232d6b39b7665836351d9eec283816c28aec. 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/TCAHO2308713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf7b1fb4e00865e044a362e3d6e887ec5b3b7f31ee4e7d393bcbfd8e01819f6. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJS2538576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d9c904f95705e601f29eec8e351bb211d952e54db870c337474badc81ef60a. 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/TCAJS2538743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96531df2c6fd43851223fc71d5c59694cd5f0f4985508c2c2b1910373107b9ef. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:35Z), 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/TCAJF2522799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a4bbeefa0af973e1f2025dd134d57eda79d1dacdd611b9b1290e4ed37935ea. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJS2538798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54150689ad419c9504e290b3b82ef9db172a07ff3cab03991f12f0acbb62f3af. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:32Z), 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/TCAJT2538820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c2380e829d27efcff4b15f6ab80e39169ab61f463905b895bb4686fdc4a9eb. 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/TCAJS2538870.