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 0x7b65aee67449f4a7d8d490ba76c2faadfd774044b390df679ce130bde2b6f8ab. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/921f2d9a-34da-48b3-80b2-334a74adacf5.json and https://artists.proofprofile.net/proofs/artist/921f2d9a-34da-48b3-80b2-334a74adacf5.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 0x9c1e5ffe1b426d14416321ebd9e56bffc2e60125377c5b7ae164d1553fcc6087. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR2X41740040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6809725cb0c41ab9dca10f4ec7afc6d234fd7f752f62bf5ab6f043eb3deb21b. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FR2X41740042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a5881f03b9e6b53dc474353043661c8bf14b2c49594340529c8b585c0cc402. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R1703071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fd287fbcc42136369e041c79723a6cdbf99f18da33e86dee08bc9d24086454. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR59R1703073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f31d3d276493cc59f4df38cb7d8360201864075e82c4a05f201dfe9c398e670. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FR59R1703075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b3a1192558779f1c069e757ba0cdbdb4c806ffefcb2316bec77861d4504429. 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/FR59R1703076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1ed1ca4e5d99a27d1da56f82326b7935537be0728be25e1954d3cb26769265. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:50:53Z), 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/FR59R1702136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6036f38edb731abb7ddf8400ecdbafd558fdf7d42198334730d0d97fdc9cb8aa. 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/FR59R1702142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2246ba2d01e3a548730ddf780c7c0943c177ec7a503fba7e508681d6a16fef74. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:22Z), 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/FRX201502198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9fff0f6ebfd75f28a628470f99e5601428e42474bf86bfd1acb6dc259d1f43. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:07Z), 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/FRX201502199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b9eac3799a79798834f4dc29d79c0a523bfe193a3fb15430724f928a360374. 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/FRX201502200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176ef2a0f7f7710e3d858d4ec7d87461bf8f3256d0ff0479efe7e83f1840f38. 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/FRX201502202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358c3059da06c1f0c48f8bc64bffb83d676da24e14d9822902b4456a908de1ad. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FRX201502203.