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 0x24b3a44adf91cbe8e8606aead0a0b933b31b4d75f6fedc7865b0a27d7a7da4fe. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d225388-8b10-4cb3-a755-37c8ae4a28a6.json and https://artists.proofprofile.net/proofs/artist/6d225388-8b10-4cb3-a755-37c8ae4a28a6.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 0x0ce89562f347dbbf95522ff6ea638492776eee8ecae306487f3e1292b279a5e0. 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/QZFZ42201690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388735201122ff2faf962ba7cb344d7a846022c5a327306dda4b97e1db8347f4. 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/QZNWX2131191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f4d50cb7b54ebb75643e130bc5e50cbccab0e08edee0526cf037ac86a465a4. 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/QZFZ42201691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657302b5308cb59622604f19b54ccbbfdaec4420f3e06a9a37ad7e5a56dfcd5f. 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/QZFZ42201692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788f0670b084db8332b8ba8cb80b3b8d2a72452df9ac76ce905404df0facf1cc. 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/QZNWX2131192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9705670f1641b53b118d32adbf8a33d125e42a4bd042cdcbfed2af8a4d2800. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZPLS2120547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19db055196e186bfe0e5e243f8d3005c324f4c9ab23559ea3909ac2f428eb243. 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/QZFZ42201693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a366721e766f85becaec7ecfb0edf34fd55305848dee495c82e2f0a38ae701. 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/QZFZ42201697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa179fae80acc1e1788dfa9b1d4925b65dcfd32302f38389ecc7263b7f94351d5. 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/QZFZ42201698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de47daa6fac4c5eba4a09d8a7bbdf68bb42a9aa854866b5447b3a04176279e5. 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/QZDA81838459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674fb84749c2fd20609707815b29ff254c35ef6ed51281c1130d008dd6b107cd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:38:47Z), 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/QZDA81838460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52edf97b09807872fd21c47cd5187fabd37e41ac038d58ef21b226022525362. 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/QZDA81838462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c241d1a9c8f9fb8b91aac3c8f62bbf1caeab65365300f262c1f0079b541a1a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:20Z), 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/QZDA81838465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82fa27432925c24c15ec3b0c1a5df791d33f65a694e3b3972ce16ac13f9d89. 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/QZDA81838469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f65c90563086f4705588143435e68fa8683c01641100a3bec372ef458da622b. 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/QZDA81838472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e23d4464c47f914b82ca6be7b24e475c4bbd8cf81d7df1ded51e58c2e15418. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZDA81838468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebf9ddccb58faa8bc1d01d93bdc68792f18f54f95ddcb7f6002e23cf671c574. 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/QM4DW1823505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f83ff679b47468ac0d6395354d7aebab821f5274946af5956ed2c5ca622e62. 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/QM4DW1823507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2da1dc22ff9b08e9709abc4f4a7049e89fcbeb39cc0cf9e6d64a49d17d56eb. 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/QM4DW1823508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53b958aeb62fc25df292e8b4148f84c81efcdb6792716697ecfbb5c3b18bf0c. 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/QM4DW1823510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01f95c87528aff96c0b9fdcb53e1d0a55a25494766979eef0350b68801f6fba. 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/QM4DW1823511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257ed6d454371a918a0e86dc4a919b6801093e9038d10294851b5823a05e0bdc. 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/QM4DW1823512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d1d8b145333c7b895ffd81e3d96788646c703025ab2f33a6ae862c51e58e25. 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/QM4DW1823518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d94a9f5b4427d90ff331ccb69a45edd0cc15dea3a1dc7df8c4ccd74cd2d91. 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/QM4DW1823520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8326f9a18ad8285cd66b16fe69adc39ada5c6494ef6682c9513436b70dc0cc. 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/QM4DW1823525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f3fc2a524b45e64bade860288449e0f5d2195dfaf2d7801c443bfa1823e05. 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/QM4DW1823528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ff20832c58c5bc81359ccee4d4fabcf8924cc4690e5adb7524fa066af6810. 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/QM4DW1823530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fc7b44a1bc4e29e60ef2cafb2abe37f37aecef0f17c45f4a357bbdf994a7ad. 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/QM4DW1823533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0656c29ba1064a2139637167e78c3709ebf267fe3cb96729bb34806bc4436b. 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/QM4DW1823535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55498afdc53714d1262c07d6c71bb282471a162040995ce7ea737e2f81d20c30. 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/QM4DW1823536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f5d45f8c2bdaa695fdc0c95c8db0b3fc687e626a1aa73744dfc645a6302e22. 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/QM4DW1823539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6de51fa6bed4f2914c3d4ae55f8d1aa1ba28116eb32b6f4c36365f1cf1a306. 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/QZFYX2436038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93db6175bfbd52ee4d42fa2ab02d34c25191157595a16fc085f607b857b203e. 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/QZTBA2379897.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e87260ef3e7d991601a5157d5212b5e6f4eb5d8dc0617c7dbb34048be19503. 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/QZTBA2379898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27835caa26906fb4dbe9db69a0b078cfdc2b44eb86cd3b53370302abc2b8eec. 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/QZTBA2379899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388735201122ff2faf962ba7cb344d7a846022c5a327306dda4b97e1db8347f4. 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/QZNWX2131191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0314c53b4e2762ce843a9f191c0df9d7d11d7cb162dcd92fb38ca305437785f. 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/QZDA72062724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfd66f641343b28ad816071f062030588a6a89b0c30a14d620ca1e0d00427fe. 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/QZDA72062725.