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 0x5f5c3fee1dfcda56d42af66b8e551c5200bc72517a9372d7584999e297d22348. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aae261d4-f18e-4f31-b167-5575c2d9f4e4.json and https://artists.proofprofile.net/proofs/artist/aae261d4-f18e-4f31-b167-5575c2d9f4e4.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 0xbcef8386eb9485211b272c6fcb9f08f33d2bd765bde2864425818ee2b0ec14a6. 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/ES6062173001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b6cefed8fdb9d58116fe88744e1b15c7f80bc3dc06a37b196c1d387623f8d5. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/ES6062174701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a1cab4e48655ec91912b29d90dff0e70355bbd70531fc42412c615e9c52cb. 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/ES6062178706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715a42b21af3e5aafa2197fa7b4a217b90338d6a02a5ba8c3b5dca3744c6014d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES6061738003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875b93105bdd61812b81c16da63fb55caadcc2948dc1b97690801a232726e46d. 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/ES6061738006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f8e3cff87984c390d063adb6c46490f563e07e442cefa220f3c47687521f92. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES6061738007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9711a403f9ff1a97c2aa2e410f32293c1ab66b8f10df35c932d51eb4f5f527e9. 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/ES6061622401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd551e9a0e1b7bba2acfd9bb5d24b1b90efa44666703116d1ed9133d5e3a48bab. 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/ES6061622406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdd98713ac9bd83e90b3754753ddae0a549f1fff91ccbc1f97dcb799328cbc2. 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/ES6061622402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046e23a6e228435bed744e9fe5b57e9027bf645fe577ae2d8fe50728959bab7a. 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/ES6061622403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4160378db79d2787dff0164c526cd8a1add7ecd89525f03092743fd7c7eeb908. 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/ES6061622407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0574bb899ddfca9c1697a7e59d39a1c414e721f2c5a565d690697a0e044d01b. 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/ES6061622409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb8bd24eaf1ab5071ecad2a73bdb34cbab6c86361e3266990760908cb62bb30. 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/ES6061186702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d82e27e7a10aa518d3573affd7b42af8db8e49f427097a50d0ccd83680c653f. 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/ES6061186703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de0a1d81d1fd88f89baebb3f7ca9c53e41107cc76d85dd7c715505de0019e1d. 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/ES6061186704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c26f18982a09ed309d3dbc8b4a9e8143ebe16a478d06789e10744c5dc1292b. 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/ES6061186707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53599dfb8a2b1a7b9aad4518af6ab803be3f6b40f1d95ba69dc0cc05d586c0b7. 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/ES6061186708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c22920031bf6edb0a83b1499c3acc4dcdd2e8503ae5ac4e32d737183547fec. 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/ES6061186710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994f09312c8c4193b71c1c7f3d18cd3d514868fb23b45851237cc81257d431f7. 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/ES6061186712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aeae36c16f0b2258595da0e230eaceae8b714ff535f33b5660ef3d8fae80cb4. 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/ES6062399601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01125fc56b85abf0a59b06f592d9ddd90f937423f1f34e3c84c553ae4a582fe1. 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/ES6062284701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a1cab4e48655ec91912b29d90dff0e70355bbd70531fc42412c615e9c52cb. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ES6062178706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b6cefed8fdb9d58116fe88744e1b15c7f80bc3dc06a37b196c1d387623f8d5. 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/ES6062174701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcef8386eb9485211b272c6fcb9f08f33d2bd765bde2864425818ee2b0ec14a6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES6062173001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3dbbb9895da5859c93a39ec3dddbeef39232c5c575fd13833f1e2b686c6ba8. 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/ES6062065701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2648dc4b10fcd516ed769f114a1cacd7e160cfb2b81952251eb9f4ac42f2d875. 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/ES6061291201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ed0287cf08db1e54417f848ec67f4ae92036517212c84001093cd187b70034. 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/ES6061291202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcef8386eb9485211b272c6fcb9f08f33d2bd765bde2864425818ee2b0ec14a6. 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/ES6062173001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b6cefed8fdb9d58116fe88744e1b15c7f80bc3dc06a37b196c1d387623f8d5. 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/ES6062174701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a1cab4e48655ec91912b29d90dff0e70355bbd70531fc42412c615e9c52cb. 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/ES6062178706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de0a1d81d1fd88f89baebb3f7ca9c53e41107cc76d85dd7c715505de0019e1d. 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/ES6061186704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c26f18982a09ed309d3dbc8b4a9e8143ebe16a478d06789e10744c5dc1292b. 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/ES6061186707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53599dfb8a2b1a7b9aad4518af6ab803be3f6b40f1d95ba69dc0cc05d586c0b7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES6061186708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f41c122d02af3baeddfd6c306ace563df86d25f686870b6aa87e712741e537e. 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/ES6062537501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2648dc4b10fcd516ed769f114a1cacd7e160cfb2b81952251eb9f4ac42f2d875. 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/ES6061291201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ed0287cf08db1e54417f848ec67f4ae92036517212c84001093cd187b70034. 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/ES6061291202.