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 0x6ebdcdccdc266cd3e2f77385f491576a543f76c586280c1e148ebcd963e2f87b. 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/6bf9aecf-bf5b-49e0-80fc-61fcf86eb7bb.json and https://artists.proofprofile.net/proofs/artist/6bf9aecf-bf5b-49e0-80fc-61fcf86eb7bb.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 0xe2b1c666a4a8137a2713994887e8f1b5732f392f74884b54aa9d72aa50e03e66. 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/BXWY82200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c702693f87f09eadefad2c39c232f2ca6cf501b4deaaae5896f22c25b42d81. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXWY82400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8685845c1efe9353dd6c2ed1668a4b549c10262b637f97c62d5fd448fe713d41. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDD2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0c24a9e80eeabfe1186d238322db3daeef34b9f58f8e37bceea0fe98b4413b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXWY82200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467428fe92c1012d62047c608b98a9147867e8c82400f57674525afb50327f1e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXWY82100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f2fc17ef0f9fbe311c1fde6782a7eee2f312fec8772998daf9ae8248eacde6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXWY82100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d856699add8d2d5e22a20be66b70aa135e00ed1b350688930c1edbc848fe833. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ51957398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c60541371a32044b27df43938722ebe3fbbfeb713f619ecdfdba712b0cb19c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2093109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b219219ff021e3429d948b95f00f4852ea3d9299a638ce7171ff1f35753c516. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ42077659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c426157b9ba0d976536e23703c4967b199df51230afc56c1f377e54f3aa00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US7VG1881569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b92f8700b8f372ca6198dfdf98ead807b253e5dbfe47b303006285c20500ed1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS1969123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2df0f0d387b926ac91c2b3b9bb2bee9e398d100603e522fc34bec768790c453. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGLM1905960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5138c704c38aa3773364eb240a827bfa359cd400b0fc1205eb87006ded2ad43. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGLM1913931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9fad57f4efb27d86ac7fc1d4a43f1d3c651c4af9e4f7f3157b76cac4d381c9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLM1970057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356cc8d5b7b5c24ba2c75e540cffa285518e877c92568f33510c72b891821362. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHZ31906667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f353420a967fea2353fb1d2d462fdaddf42a8ef8d310b5ab9d1ccb02ade02f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHZ31906669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067b4b529b7c6b662a91f6c09e82860b04a268e506d0799c2146824cd0f7b871. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHZ31906671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023625d6b3f03bcd7bedda1684137f2a30b479aee9e5fd83be8727b86a577a02. 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/QZNJZ2353398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a895e37f4b950106ac848b1d62fd0ceeccc643d65aaacc981485c2157d4b356. 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/QZ5AB1834861.