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 0xa90ec1fc9d84f0b8124ea1346dbf83a2b65c54b6353d2994ff818fb4de9c5cce. 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/1a4b5e46-4494-4f73-9b77-dcc97441f2c4.json and https://artists.proofprofile.net/proofs/artist/1a4b5e46-4494-4f73-9b77-dcc97441f2c4.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 0xd395fb2a4abc16fc1830ab21394e2f687770a33f4b1fc89ddb3bd20061496a07. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:20Z), 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/QZDA82562807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ec1090cbe2555cb81a95faad3e961ffa04831399d3a662de5904c3db09aa90. 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/QZES52504088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ec1090cbe2555cb81a95faad3e961ffa04831399d3a662de5904c3db09aa90. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:20Z), 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/QZES52504088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0afdbe98c2e30e55c932cd690d637b7524997dd3e85bd5f6eb225ccbac567f5. 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/QZES82576103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed35dc43c4974bac4f1091091e97fb508ea01af77595633029ffc5ae71f14a5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:29:30Z), 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/QZES82576104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4513ab3a0d77ca36866e95bc4ccff4ee845ee6695e3fffc2a6463842fc6cf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:25Z), 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/QZES82576105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d50ba612fc8b3679cb08419c8f9c15bf9ab82a8bcf36d70e674e151ff1dde3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES82576107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d63c01c58fe0991cbfc4a65fc47ac8f26d4cc34aa3dcd04124bf588cd41cf57. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZES82576108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26281e92ce860817081f48081c180fc6668969629e7c27409b233c20f6caff1. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/QZES82576109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa54fb89db4c8f22b98b01de815539fb63b0895d389ea715a7e3649dd7be8a83. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES82576110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c3bfe6b4ae48559d0aa2c91df6af428c2b56777e8fe4ad376bc671376f1b1d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES82576111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f95eea5a034626d769a3950da6d4d748f04568c7853814efa6cc4b03cce743. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZES82576112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa214bf4c5500a77c17b9d6d703cd271731813c940582f5bb122cc497a13da928. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES82576113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8ff412499a3e2c2a4d5fee696744c6def162c5addb047115916e373860dd3e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES82576114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f19fa70c9a203564a0fed9cf6b1274c84813439eed38bc7642ea53928ca4c8a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN82546884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6217d58b21f0592c001d197659af7cdd52bf57df048a41d1e1dafccb0a73da. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN82546885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85917556ea8cb51a159c42ce03846816b7c6ed42b3f86a4e0144023854522d9f. 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/QZHN82546886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce65d85ba3a987eed7f10b7009a9eff51ead832e1bf1c9abdd6ddc0bd9b587b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZK6Q2554865.