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 0x77d887a22a38ef85cbe4e58ac0345b038e935d59c1af83124a6658df1b33f651. 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/3e8698cd-b5a2-497c-8d8f-9d440cb109ff.json and https://artists.proofprofile.net/proofs/artist/3e8698cd-b5a2-497c-8d8f-9d440cb109ff.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 0xd8971cc9e3873bed699d90c194695e1c2ec05a989fe8118b5f78007b4f7f0f93. 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/PYC842404891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb15d0f6a427deba257eab2de51749cd810485b621cf6f881c71072f3f9f0055. 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/PYC842401757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7554eba4083e8d0f1933cde3c11476f1ca69e99ce0bb064567ca89c5cabeb34. 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/PYC842401755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637794c548238bd0789af0bde43762bfef57f60df12c6ca1326a3d89b873d984. 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/PYC842401756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21560284ec6aaf7ea1ff883489ea80d2455e6ae5cc0ba9af8cf88aa8e84ad36c. 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/PYC842400474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75487daa0ae084146cd94667d0acec8fd2d677264e228ad788171017e54fbe37. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PYC842303821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6151f83533772692913629a45fd352d71f38feba8bdb4a8a5211ef3b03fd93fc. 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/QM6P42227028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bf558fc5bb7627636a41b244a90c5cf643dd47def6a76e63a3983ed82ef2f0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6P42228987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3508da7b556c0e98d5bc8be6aa04f0512121b995a1b8db34d648d5c49794d2ea. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USCGJ2283618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aacc33d39fb9a7d2ab2f4a1b9578e0fe6a7744954bc354d69f3b942d8760432. 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/PYC842415511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0563561bb64fd60a1b689dab18fd09c382a3e5e50974f20b7915777e73e62211. 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/PYC842409861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ba5857fbec6da7ee2018bfac9cf79628ecd1baeaaeef38312808473ebb833e. 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/PYC842406463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279cd885146ad158cfdc3dd8cbe4ff8da8271c1feefe88d274d09fecd9204636. 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/PYC842406032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624e07791e2cdc76079a6fbcc9c837afd7ba20062f96d890543c09aa628d2ec3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PYC842403230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097c9cdeee164cc62958320cfc62b1344812f171d500f66fb54067a87d88e9a3. 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/PYC842401965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54329db10172877230a1b6d6bfcd1fc613d05c67a235e2c4b561e3ce29763bf3. 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/PYC842400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba7c5c6f180023bca32b787fcabad8bb409402330d0143c18210a535a7e409b. 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/PYC842304738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5011323c56a80df4423777a2e03254c59a0660e42ede82f83d93536ed899c629. 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/PYC842303817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2c2178c4857570c7f0abe3e68a3def511fdb63203162cffa466ebe46d66fc8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PYC842303092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14404c78331e4ac6fe96cffa3a2faf93ce8cb43bd11a80669320396d9041da79. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PYC842500965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a2dcdb14a9df10cb32c201e8cd65e46623478ff93af17bbd45bd79e755e17. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PYC842500961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce889de057c7fe5bede49aebd88888903b27a3612803aec05066c856a7fde1c. 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/PYC842500962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0563561bb64fd60a1b689dab18fd09c382a3e5e50974f20b7915777e73e62211. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PYC842409861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14404c78331e4ac6fe96cffa3a2faf93ce8cb43bd11a80669320396d9041da79. 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/PYC842500965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef51dc0bb2fe54b1ead2120a04acdd61cd98d42f88225b00bfc236bee5619e5. 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/PYC842300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661dee535f32be3e064543a7b826e3b997b36309ffbb7b3169a5df6d9eaf4245. 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/PYC842500968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c20135ec091b3a399dc40129c18c93334a01cc5e23416029f2644f98f612910. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/PYC842500960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce889de057c7fe5bede49aebd88888903b27a3612803aec05066c856a7fde1c. 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/PYC842500962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d95320a8d31b8edb54c347f29adfb0561a505b8828e8fb1e8dc43577f4f430. 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/PYC842502705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d59721a432a14825d4361bbb310ebbeaafec3acf8dfee75881f4ba1bb3938e8. 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/PYC842502617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fe02242bd9dde1c12a896bbd22f8475eb3beadd01add36b42c9a019359c0ff. 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/PYC842420974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11c792a2993dc41af173f0411bb2306bd41d49c669277cc649a0973ff06a8d2. 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/PYC842417687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7370e3bf85504d601a351816fad33c89c8c9b7c894708a5969cac142944a0972. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PYC842415493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe59e74b34f8db58c0c0e56f61653ac3bc0711df32fab3fdbe2d10292de77e3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USL4Q2170064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5e92e1dde001edd4d57ce98aff05550d49ea0d14ccf6ffa5a2a72607e87654. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ2249534.