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 0x04eb6765e2c7b656832daf05c5e0a952221339eb8f6bf0ce0faafbebdb9bc6bc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3cec781-685c-48ff-9de3-1ca99fd839ed.json and https://artists.proofprofile.net/proofs/artist/c3cec781-685c-48ff-9de3-1ca99fd839ed.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 0xbbded75cc460ee4ba168485ffe26b35db260ad1f432c356ade20d1b12b88e992. 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/QMFMF2133978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365a90d269ca9a7da876df1345cd161a14353c808873fa73755a6ad2c4c49714. 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/QMFMF2133984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee8fef359eede0470d09c37c9424b0d6acc29272b779e7ca2851d957a6a0683. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL8RL2403023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd357d6db6e294773360c2b8702fb63de0c41ddeb1ad124dcedbfeec5be202b3. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:52:26Z), 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/NL8RL2403030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fe6a30d5847354cf6704e62a6ecf15b87e984b30c3200cbe8e48ba669d59d1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NL8RL2402809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16ef216e89eddec521e2dfe3361adad2512614e0e1e497fa54c528632e2d538. 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/NL8RL2460913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dd035ef2c02ddb41a9cf1278d49f8a5f7bc0a84f0fa7bc310258f5e23bbce6. 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/NL8RL2460909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57406356f72a79fc7274cc2505c8c4fd0ba4fe77ea05070745cf5a150d37670b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NL8RL2460907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf49df5ceeee8db2dea9bb4bc32f4dab4010754732dac4117c2c3ef1ac9082e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:04:32Z), 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/NL8RL2460908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8adff46ed27cc4de74f1b3e3b9298a389d7b2f92e1bcab7e55af16c0e711ea8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/NL8RL2460910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162ae150b54c11913e9157fbc3495678a087303cd695c359602848c8bc54829b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:39Z), 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/NL8RL2460911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063a5d2561cf089db26db9e95628d05e7260ee153735b1ad88be9395124a11e1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/NL8RL2460912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16ef216e89eddec521e2dfe3361adad2512614e0e1e497fa54c528632e2d538. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:39:02Z), 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/NL8RL2460913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27efada426dcfb0b90d11eb2d51510a31b9c4dd6ca081bd43dafdd0193a812e1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/NL8RL2460914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5057c809cad255f0dab27190fa62c976e08c4eeb3eec631d797c76826b2eb9. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/NL8RL2460915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb43bab35fcb8d3f265101370347be38f0ef0866d943d92d6b654bb9f46fff5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NL8RL2460916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00762ed1b3d868f8869a9e7b8bd4e765de8a699455fb378dd9ba2ead9a490d6d. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/NL8RL2460917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83fe30fbccfeae365fef7cc1749382ffffeeab7c622aa950f73cb64d0ba6168. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:51Z), 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/NL8RL2460918.
Laisse Les Parler Clovis - Instrumentals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2320581286450fb94560263be8d96bb2e9a1e25c80dcb1f56936fd015f1012b5. 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/FR5R02500444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2320581286450fb94560263be8d96bb2e9a1e25c80dcb1f56936fd015f1012b5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:32Z), 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/FR5R02500444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eb35b2cb4d1efcf9ca47e528120c6abbf5cddfe09469800b30638e5bf3637d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:50:08Z), 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/FR5R02500564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fff14a6b97ef4e239977bb2b9c642b20256dce3ca60f7a1941260dc23e397f4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:49:06Z), 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/FR5R02500565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9132fc5cb7783c8071845b850e44c4679ac3120e8f70681ba6582a6ec41a1571. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/FR5R02500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7783afbeeb4679c1f9f96e7a040052a8243e4f6da66e72439a841dc1cd083b3. 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/QMFMF2223924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5ddf146c7304926ddd9a3c22c7258a5ca41e4ebdc0769a8ca86c799b48ff22. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/NL8RL2404443.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch