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 0x87d2629d4e01b8ca1ed96be4345d8aef9579794c4717c09f607aae698afeda8b. 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/5819469b-cff6-446f-a2b4-027bc902bf88.json and https://artists.proofprofile.net/proofs/artist/5819469b-cff6-446f-a2b4-027bc902bf88.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 0x7e5937cd4d5eefc09b5316ce41225d5306bbe43bff7db0ebe598fcc21ca778c5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA0L2351035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3c72dcfc043c110a7497e48171f31dbb2e17a15d3761a592b9cb75cb743e2b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DGA0L2351036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb2cfae32f3f130227121fa43794373695956b88e69d2107a4f7720405677f6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:10Z), 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/DGA0P2320616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156d91da9e88962b27c23778b6b7aabaeaa0f901e32e49b2df033f729bf59266. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFMG2348301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b76e7cb57942e2604d70752a2db963ade77b78acfc35f77b646c90a52c5b9e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMG2348302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e738141972d464cd8e62fd4ffb517b320827ffb5b02a7f4126c124e0c7a3fcf. 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/FR59R2426505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8792f4e81fcc30b6ce5549b4ebdfa783ab4f48b248add0ae621f09f0b7906982. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:14Z), 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/FRX452442077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94076f067856fbe4f1f73e138d055ce325ab588d131f5879a36bb8a178b11b28. 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/QM6N22471768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf7414faaf816e595adca0ca3f3033e9d3044c8fd1d7a8d938d03c5f1f0e20a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:42:42Z), 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/FRX872476632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f826fb2790795f3f8003c600e811b2857aa4aa56a8787559635ba17ac22936b. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/DGA062442838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76e2f8768a550fb3622c19e7f26247d693b5872bf47531f672137850364457a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:08:50Z), 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/DGA062442839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1155e713e78bbddf853b814d7e0aef9986fa366599b935b7928db6e901a1abfb. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:20Z), 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/DGA082408536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe977db5165770451c5c14389b8a2dcbc90927280e1dabc204bef3c2518f69de. 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/DGA082408538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd948347dd78ac71d63c679a4f74a1520706909cefcaa45d09d7122a81759c. 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/DGA092442426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2158f3cbdeb258b012a0b893bf4bbacd2828424ca4749c74e30c8645f0e36fb0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:34Z), 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/DGA092442427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b37386e0946a2da5efe2034803ea983384141f310a39a98ea57c1b0832f687c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DGA0M2416413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff52105d8d931d5c1f0823ad6c66f1647884f63f2ccc60f55d1f305f9fab86c7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DGA0H2480478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe880d9f98d555c4634bde31ba3ab8e468b6937b3f6dea3906a3d8e448364a72a. 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/DGA0L2471649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a69f88cbeafb501190fb4007983f8622f1f36ca787af8de8f8d21f1bdfd2e15. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:48Z), 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/DGA0L2471650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfade3bfdbfc34eea90409568f35db5c7b27a846c600448c30398907c8fca85a0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA0P2484543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b0089fc3750f403467ada358d064e3b944202039ad29815501cb4a3252d4dc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA0Q2434013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb822b33c4624ab08cc0c8eeaed2a95889368bde6b827df860b847d23f478472d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:25Z), 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/DGA0S2451937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95084e4e5b809595c520307771e8bb246606278927c1850ec74b0bfe5215e820. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DGA0S2451938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb898655fbee91b18dbca3c1b302ee6cf2ef67e18d91ea0bc88c1b747d719bea. 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/DGA0S2451939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb182227dccc67531cd261bf3daf96720c794a85a4397e2b4aebfa7b8cdf24f37. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:48Z), 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/DGA0T2411169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bc2b01b3f71128b01f1dd34b41b9fd2f8b6718ae8a80f509a51b4b4025581e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR10S2504978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284e29491ae0fa9a1d235bd90f88b65a16f4cfc1a202224010da34e74cc69306. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FR10S2573990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4433359022beb7a6fff187aca7adc9fd38b254b23ed7308566a8c9d204b19287. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR10S2573991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31a7909d2ab0048ed008e161e3b644906396ba94aab6ec590213c73aef6acf0. 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/FR2X42512783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e94a253af3d33ab7b1b0c35247946990033c2d127fe5aaa6a0406cf15333fd7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX762585439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ecd60c757666b358be0f3a85163c46df5f8a4ed976de395292895c2f7b638a. 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/FRX762585440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4404b24efa07c9466ba9ca8e5b7ffc9000327d6c0c9f2041cb6daa82892592f1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX872541359.