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 0xd633b8d17eb6142b39bc8ad56664b2c16f68aca9943285453badd515f0ea6fa4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a64c704-978a-4fbd-822a-b499e1900c15.json and https://artists.proofprofile.net/proofs/artist/9a64c704-978a-4fbd-822a-b499e1900c15.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 0xb1dd024a8a7623178523beb559322e45efe75684abade05d1d20ea837551d47e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:29:51Z), 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/QM6DC1573459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de9cd6c78d3f120ca90845790e7ef678441764da48c82b39dbb63b959a946c7. 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/QM6DC1573460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b08788c03e0f08336ba8952f136d4876986130ede63eb616c6394160197b79. 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/QM6DC1573461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75edf8375e84486d719a25ead8db5ab0b9a54ffa2705a716020d108e65c752bb. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:24:27Z), 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/QM6DC1573462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a846d755305f84d006e9c6188cfc09f18b0c05fcea04f8da8857fc4a7a7c3a3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6DC1573465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793ba13a001e8f059b700e8472baee26db23609876e3b534c21269456ee34a2f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QM6DC1573468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fe6dacdba0dd0d064e2bcd254ec201dc65000f1ef424cfd2596bb0f2b54e8d. 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/QM6DC1573469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3741359fbd2a6cad649f1b2d62b5c30d34baded43d9590c34b73bc60df1da727. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:48Z), 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/QM6DC1573471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab25ab659fb9931f65270770d88cda67ea9157e31b70a40f17088020093664a4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM6DC1573474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b32039aad1929b9f68c7067684d068e2fda22a66ed6abb53ef0ef52c2ac74b. 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/QM6DC1573475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb34c4b1a6279e4b8872ce4e766439894ebab45aa8a56fd1fda2a89e3289aeb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:50Z), 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/QM6DC1573477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220fddcb9ab9f244ab6fc6aa99d194c97b69b14fbb5f93cb9194a541a194570a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6DC1570838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc233825c54715fda647a7f82201871a84714f91edce4160619a3bc70ff3283. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:00:14Z), 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/QM6DC1570842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b07179fd5f43b22b47d2c7db6c83a4064c86994783f28ae2cee5a8b428162e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6DC1570845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082c1b0d77bbff5943c54fa3b1ee87b8f63838b03b245c2bfc7457910abd99ff. 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/QM6DC1570846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b9f3ec5500f333e986123efacbc056b84a5bf9f455d2b1fdf4818c5f9c7f5. 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/QM6DC1570847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a6bfd2a769a5ad444924d252a1f0abbce8d05efc49594ef5c90314cccd4449. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:23:47Z), 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/QM6DC1570848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650d9e20f537797a3cafc3a8d87e8511993053b44dfab477e8a6d308e4ffa935. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QM6DC1570851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c705c9de18aef5a8166f90c63d77c23c13cd9e00736386225f1f5efcdbce3b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6DC1569283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a20bc7808d49132120a1c053b03e634e092ecfd9e4bcb8b2716f5d32fa71ad. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QM6DC1569284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85baa2784c557b1aa7225e45eb6ed41434cf0463f827172d5d398cf17f658703. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QM6DC1569286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb60a6f448baf8103c842abe18557b50590ff0db2264754cfea05f16a7563ed. 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/QM6DC1569289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd38a92d44abae50c43f537b4e2ffbd24a19f69ada26bca92697d5dac821cb5. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:01:42Z), 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/QM6DC1569290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bc10aabfd0864bb0cab5a0d1a9da5b368f8569dd9d922eb26dfc234e449f39. 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/QM6DC1569291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995e99f6e923349ac5c2f89df7fd480ababb4bb4030d305375c682ba4c4c0400. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:10Z), 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/QM6DC1569293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcda513aed38c6744a71a5860cc368a5419d713a7a59db8f146baa2785cd2bd1. 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/QM6DC1569294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddfc7804146523a4a47d39a3f61e378b3091ad3e7c1010b15fea1b277554432. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6DC1569295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220fddcb9ab9f244ab6fc6aa99d194c97b69b14fbb5f93cb9194a541a194570a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6DC1570838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b07179fd5f43b22b47d2c7db6c83a4064c86994783f28ae2cee5a8b428162e. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QM6DC1570845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b9f3ec5500f333e986123efacbc056b84a5bf9f455d2b1fdf4818c5f9c7f5. 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/QM6DC1570847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dab6818aee6e33e265b282bda40e20e3c4d94dee10000256aa56dacf250877. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:23Z), 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/QM6DC1570849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de9cd6c78d3f120ca90845790e7ef678441764da48c82b39dbb63b959a946c7. 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/QM6DC1573460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b08788c03e0f08336ba8952f136d4876986130ede63eb616c6394160197b79. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6DC1573461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba11a0731bad690a9c958038b8c3002f47be21eba0da857e8a646209a849868b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6DC1573467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793ba13a001e8f059b700e8472baee26db23609876e3b534c21269456ee34a2f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QM6DC1573468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1d484bef82accf2f3b0f3e763ccd6573c34e807177e6109793017e2409e1dc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6DC1573473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090d239484d553b60d1d3bb5fc33554a9e09797d5cf3c758dbbd2ea15c5500f4. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:22:38Z), 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/QM6DC1573478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca5aa4100e9facec42dfdff827a4ea0b049ce5d7b6bc5f5c6babedcfe9b574a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM6DC1569177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c3b2d48686d34f1c9375ece479646125afb1f9ce3fc22450a90af3e2b4becf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6DC1569184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd12bda42d48aa271033135ec36b41bb7fa5660241f4ad4796fe9c46487157d1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6DC1569189.