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 0x9ee56a02f764a9edae1064582c2b7fcd765fb61bf67e55489378505e0206b3e7. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3cb0fd3-2db6-4ea4-bc66-458250b276dd.json and https://artists.proofprofile.net/proofs/artist/f3cb0fd3-2db6-4ea4-bc66-458250b276dd.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 0x5b510e15677d0eedceb8d37f21ed417f9633fa63bbc692e4ca937a6f84fdcb1f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBCPA0700244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bd89ad751df3f5e483fb4e62d93f3580fb959add09b552ca3c84a6f43126a0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBCPA0700239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0969821d2c0e999e49d94f5087fe3b50ff3deceda5ffc9612f1dcd1febac923. 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/GBCPA0700263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e6840434768fa679a4139626d1e0be978520178b5a991cd12ae0d9f7d1554. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEL129705006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3424a7e3691081b431548c111f8b6e3d5e684f9a1b30d06079ae6eb343e688c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:30Z), 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/DEL129705010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106e8ed83142205e73650d638fe72e5a5cab8aa8e9e12910a022b0bb0e20d62c. 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/QMBZ91630264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690c882c09d7e3b5c737e9bd23e8fc4f6837a249707d4d95ebddf4183da682fb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMBZ91630265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcf4b4f2db8a18ae2ebd3c7638249e9aec879789585021550ef4c45caf2cb36. 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/QMBZ91630267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe60b28dca10a83a063dc7654ea49cc046adabf3f33bc026aec4eef24683ae4. 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/QMBZ91630268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e2cc81b222bae939c02dbb36514f5ed99659c94820e54b7d21294c65c81b4e. 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/QMBZ91630269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bc5d0b1bd6ad287cefcd6474af4ddc3de30974d1893590b4d422dff14a9083. 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/QMBZ91630270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7846cd90cacc9a7070ae98764835305c70a8813b98ce78aa0188cb51fee3a8e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKI190024101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4292929110c859edad02ab3dec87178b5770c5bf4836c24f6a1489b4ecdc25. 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/HKI190024103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4211c97fcadaae78480c331602c947a692d0b0b6569d3da96dd18e94d69082fd. 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/HKI190024111.
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