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 0x8d0ad2b1aa77ae962bf05c27503b08273c91e36cfb098ca5b6c559251e8ad8e2. 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/1706cbb7-7718-4917-90f1-c8dc88794f1a.json and https://artists.proofprofile.net/proofs/artist/1706cbb7-7718-4917-90f1-c8dc88794f1a.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 0x2db254099e92290f3df3fa43c87d6b820b98de953e48c4d76069bc468feaf907. 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/CH7812196676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ab1e9bf589a993851296505732cb80acd24c3c2faf6c1166556b5d49fd9042. 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/CH7812215031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97347e8526f26714b2f22d551379e2624657b9dace6ef12e134c6bc7294b0086. 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/CHD522200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97347e8526f26714b2f22d551379e2624657b9dace6ef12e134c6bc7294b0086. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CHD522200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ab1e9bf589a993851296505732cb80acd24c3c2faf6c1166556b5d49fd9042. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH7812215031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc695c6d6cbe3cce6b36278abaae2312d4d75df7a1121b824da09ce018ad229c4. 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/CH7812221430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70a29f2b59689e5423a806e7192823c126510767c14e8b1b27a4932ecbb3e07. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CH7812221431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce1705464830d94b7dae2d88d6fefef66ff560d4c716237f0c6235148d1ea89. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH7812221432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fac1d8ed298bc2fb34f6b4c153828db50fd1f6ae7a5fdf5ab2e08f59c2b640. 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/CH7812221433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a83f2ba596f05e0fdc1414f5aea8587914a685bf6071958c1da28302317dd. 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/CH7812221435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec62ca1a385d0d7267fef694b3b47f37163385facffd895d293083f357f69630. 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/CH7812221436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d9c0307e55225ed736e3e34996e5e787a95d7b9ec750f0e6aa5554e386488. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH7812221438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61058943898690a00c083f0b481d9fe6adb28d4542dfaf9e1c82990928c45f2. 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/CH7812228238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a00d4933a45e8bbd43e8752f933791bcd6a1433800a2bc2dbebae26c28353fa. 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/CH7812228239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb40825b33123b8a4bbf31e428e1b3fb4a6f6900081066701e6e8a6780dd0b8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CHF032505082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae98b4417fc4074228a0091f3b678f5c78daf1669c345fb1cad17051538012e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CHF032416713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13ebf3ff390c940ea9163da4441210889a87042e54baf5f4da2bcfb37e9279f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:21Z), 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/CHF032418098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b88253bf60b44ecb564cae16d80b6c48ac2d3046ca1998692995b248efa145. 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/CHF032419356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4748abfba2ea7bcc36491c6d7e896c653bdd352525c7af65302713c0279811. 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/CHF032505083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4badfe5314fa8d8764dbf93961a61daa80e1a83e2db3e6e71e69d70fc3e24c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CHF032505084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358c1dfab089bafba9f6aae24f9e22bf7eb969d6dda1de07e1e8a607b873b936. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:06:57Z), 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/CHF032416716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ddfc38e16b9122d909a3a184158f8a90317b2fce6006c8f34d3d84c963e985. 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/CH7812237900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa79221eb0e1804de9f615d45b431e3f4829d4e2acc85e0350a4ae1a11fd6cf2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CHF032415889.