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 0x056d8db0d41defe2666b9bd4c0935a94780f6a43182c32a6ff1c1566944d9f23. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9dd145a-d824-4689-9331-bc4c0793dced.json and https://artists.proofprofile.net/proofs/artist/c9dd145a-d824-4689-9331-bc4c0793dced.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 0xbaf9b7a0720de6f1850bde6705b56f35dac31e1c4db8cb3d7fe51911ddff24e5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CH6541653159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643532b56af6cee9ae1605fcdd8843418650d3c657b9cd23e9e3f13258cf6fc8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CH6541653164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4bd3f93176b2fb0f296e1aab0ef551d847148c1c9ce091c2ac1a559463f6e0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CH6542221349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41f8bf828ffdf27072c5200891b5c38354cd8e893420f42b10ba801d7a023ec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6542264707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cacb8ea9b0417c61ad623f11a421242372eacab9ed73a1e4f81478e9a7eeb0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CH6542264725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ba81a59b44b6634a0dec04e58a8bfbff7a64c0b478375e882aa10cbd0a3e26. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:37Z), 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/CH6542274141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce721e9d77d8e209dc383ca9433ab2aeccf725d2e2507fc78aa57ee70c4c6ff6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAZ2284390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bd2035bf72ab454fd7593f1b827b295e4e7bc865b21735fb469a1e955dee10. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTAZ2284391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd733f3a26f8c24a04d2ae6482a65d0ce00fdc3d8f022f7788bee051ae9ee440c. 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/QZTAZ2284396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0906920b0f7abcf665d29f3a618f239a7dfe939e363423a0629cd7051a77bc51. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR0Z50115514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2939a95b11939cb9202b79570e5c9bea0daba87477f0f92fa207f51f9d07fd69. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR0Z50115515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d59ac41109f0892572d8550e695ae5eedad5a5088d43fcf6b38a476463494. 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/FR0Z50115519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e6fb7e9f3a4bbe251480ff4f2dd46622d2a5470cd876b215eed7e019e3265b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR0Z50118340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa743130aa89957e852b8865f44228a12ec740766e8be6e34b94974f11b815dfe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR0Z50118341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7366f9482d8e62a240eb5497fff07a1657b87557a366f12c8a2f26b9d9bf2eab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR0Z50118342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf3100d82a0e394353c61f118f1e794dd6a7596df082e26cdedc2d02313b6c0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR0Z50118274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761b17c6587a248752cea00a6478003520765a3f98e671572bf869ecfbcb0b77. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR0Z50118344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22688beca89541b54525fc734d2ad229df6414ac41c7ae7a6bb2c41989dc264. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR0Z50118345.