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 0xf123dfb60c87307d4ae17e4b88abf51bd874a2a09a641b9ebaf4a9f656aa9d06. 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/61451236-faec-49d8-b1e0-6e8efaa52921.json and https://artists.proofprofile.net/proofs/artist/61451236-faec-49d8-b1e0-6e8efaa52921.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 0x84e05229e3de1e454fd4d72f40af6d3e1fedcc03c51515060b544690e9e3aec0. 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/QZDA61922869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314ac212f3c65cb133db1cfd881a4a197174c99e9604581ec9e6eff4c9821ac6. 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/QZES72176989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720e51ca52758c87eaf2883b1adcd80cec9c60a0e21c6ec63f2bb815150633fc. 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/FRX282460315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1fbd5cc01a5792e0d2ba30405d3a2fa5126e1808be85f57842f2829545bbf5. 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/FRX282460320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b92fb04ed1f7ef24a63c88228fd5804ec2411fe73c73b207229b6062e28844. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRX282460318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf726d5d89a83da4dedb4f9092d735de63f0aafd5d046a56e99d3876d3e77ea20. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX282460311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c41c7b38b23b8d8913dcc5d62de9df597a97e85cc2b133b0ad0cc8c4ff4dd7f. 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/FR9NG1800228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69282a9ca2ece192d560885904a9251145513680f496a3be21862f58fec5a526. 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/FR9W12021112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ffcae76415bef041df8708145924c58af69920717885c98317f67b8342c23. 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/FR9NG2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607cfb0b7473beead79e04647aff688dd5b5a60408305adac366a6a3e7c2bfe2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNC1969514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591aa7f8245d4db48fa8d040d4573c9b7fa356783807900699118a78d6a35d3a. 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/QZES71811200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fbc4ae47f9a33e62de87e1d23baa9b8f09fabb38f3abe6e539a4f9bd95695b. 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/QZES61971689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab11beee6b6df7f94cbc8158745674c4253badea961368b3cf0670e6dcee985c. 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/QZK6P2210340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1218b971c3af07ee2c45f9c9966017b2a53b3f3abddf57abb34f7d7e85f78618. 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/FRR642100473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ffcae76415bef041df8708145924c58af69920717885c98317f67b8342c23. 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/FR9NG2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1218b971c3af07ee2c45f9c9966017b2a53b3f3abddf57abb34f7d7e85f78618. 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/FRR642100473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c41c7b38b23b8d8913dcc5d62de9df597a97e85cc2b133b0ad0cc8c4ff4dd7f. 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/FR9NG1800228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5355a59edc541fdd0474296c09ce7ab1f48a638e6de52be094bd022853deb3f1. 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/FR9W12319006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5355a59edc541fdd0474296c09ce7ab1f48a638e6de52be094bd022853deb3f1. 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/FR9W12319006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5be8182db4063defc60154583d34374e91b638d2f80a61d14187e86c8de000. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNWT2303075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc252d1dad8d3860e7b2c46c93d296ab14b9d348f3a55b30620e223ce437d60d8. 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/QZMEP2184733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc252d1dad8d3860e7b2c46c93d296ab14b9d348f3a55b30620e223ce437d60d8. 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/QZMEP2184733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e80e8a40d0214b6c55c8bb980f699f36f3534ef0b60dd71207a4365c4d0c6bb. 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/FR9W12104104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee8d4f62063239843fbefbcc9c01d9145df069ec9017c46ea04ec326aa0c041. 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/QZCE61805853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150e9d799154772874d3bceb474965c569a972320af78f96e3489e1dbb1a7e50. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZCE61805855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44724f0045161ddf8e056c6a729a3d8d8d056017a81c7b4ad7a436fa72e73aaf. 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/FRX452196845.