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 0x730437cbd30a3c4a819c75dada45c344836017b5b065ef78c29efdff801e0fe5. 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/cc9ea207-0724-4d22-a722-caf3fb9ea757.json and https://artists.proofprofile.net/proofs/artist/cc9ea207-0724-4d22-a722-caf3fb9ea757.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 0x895af1133a28ddcc0dbf746f20c95b1e89107581a46c8ca6e3cabdd50f0f2d26. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX452182153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027541e4607ca1b5622416f65efde2cf4ad226bc42a0847e03f5bab0965b758b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:48Z), 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/FRX762198170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a55c35e14ec2ec4c1ec72c212e0dd56039909676cc7168ce042249917ac2099. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX872141509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257cd74385df2cf25c2fffc466ec9fbb20694a994ae5855431338130ca03402. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:03:57Z), 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/FRX872141510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3340e080bccd6a7198d55fe2c46592b275e5219fb5bd4480abcc6b433a889d50. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FRX872141511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073173099bea5bb2bac9e563e4e970f0e4b408daf48c862f1dc76b09947bfec. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX872183180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80559e517224b386ba6cba88fb3d8c3008537c4ff6b9800bf48030cc0313042e. 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/TCAGT2360356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e22fe86657da03265cb023976f2c6df050d90d21f06f911960fb5259e49d7a6. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:23:54Z), 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/FR2X42234689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66108d11cccccb966bef5ffcb555b77749ffa473ac0f8890e9f79ff07492c74. 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/FR2X42234688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be27976e41dc8f87f41e0e064fca701102eebae028e8c630af62099527ffc97. 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/FR2X42250422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893b12330b87b72f0ed496be7df705a7eb997e2de97f74212bba2866135c3803. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZES82291747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc7d528ddb59e376b1c3bf20b62d503737efb1336a48e23c75e92c0b922b193. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN62216927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0329a2ca2c54865d26ce9731fea957cbaccd94c3635cfc33735f9fa6c744036e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FRX202288096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b54e6a29b6058e5f91026306c1ee317bc738ce5a269d57d68b6beab1a1ad17. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:56:39Z), 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/FRX202288097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b6252640011dda15735d28320b530cb8100605fefe21d1521053c1edda72c0. 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/FRX202288098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb696068a936a3379d80efb091aa7c54068d3113981d80f151dac7356e01800. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:01:06Z), 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/FRX202288099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6a3af91b0fa3de057c955b1eac435dea86759906369f65932d763c056c27f3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX282206698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc46af550d1a3c1d3b80ea5be58f360f6ff978eb665e7d5cf2cedc820a49700c. 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/FRX282280538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0361dcc337a74f41a515d21bfbe1a1d3f0dba59d97fdb3a7530dc18162880643. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:39:33Z), 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/QZPLS2219169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212d223144b4043a596359b2517343697c0e673eaa767da9c2efb64f3ec6039c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ING212203284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a58463595ad0581c7d30757486b9934a4656b54a6f51c794a2b0376d977254d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:43Z), 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/TCAGO2284707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea385b3c560540d70527411e052e68ced16fba54cd0506021eb1abf1cdb1c87. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/QZFYX2380001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51cb91c797118d87542c152ff956e9a4ed3bf7a5fcf373f0d1432a13106b954. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAGT2325696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c972562c997939cf588bd27467a8cb37b1904bae177bac5d262eb7a4a2af51. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAGU2362406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628a6e05eb0eb027d1ed2fe9641105adde4f2b742625c5f5ee7320c6fdd77e04. 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/QZDA62363997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdef80fa11b60a4bfa7a685f16e1c94718fa918e784c4cdd08e9d3a22ef8e60. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USA2P2313336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66af318ec678421b32b399b7e860304998eea7b2dae7a3d90a64a3d67fdf1a34. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZHN82339738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08e6dfacb84669f5b564dc0d46f2177d50da46dc82175f8d566b78a989c56df. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T12:02:27Z), 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/TCAHO2332701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684e78619fcc4ce7f754bb685075749d8ba25977a74962706ad139c7219d9bc6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHO2332800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bdec311d43c2d3e44b5faead5bb3f84ce3848e5d6a29597dbe51b8c9ae6502. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZMEP2469009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924909ec8abd8934426e610cefedd4ec272f6740d74474282124bd63a52e876a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INUM72500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cec5d4b5f69aabf8451612cc134bc28a2c1a289e6810fc34f8f9f6b3ee3e37e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT65Z2579605.