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 0x799628eeee96f90b69ecb94c85ddb8b75ab416b6b365aa6e3471eaca17ae8f1d. 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/51a001f8-2df1-47f4-9397-fd8cdd0f9087.json and https://artists.proofprofile.net/proofs/artist/51a001f8-2df1-47f4-9397-fd8cdd0f9087.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 0x4ac28a3a6cb9c06fc94ec03b39b03d0148175dcae26d48e85cfcb86947a601fc. 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/USY251515057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b85c3332b7858ea7854eef6b64427b9a61274d748feef098c27868f105f2fb. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USY251515058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c58d241ba5a33d670ed71869b5597aed05d480a9fb1f00c95df1f0067f3e89. 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/USY251515059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7615b36e9ad7f94e0c67afeb769db5d52066e886e7e8c6eba3f7a854ee6df26. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:49:41Z), 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/USY251515060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b974bd17cd700c67ed4b853fad0b2dfb72d5ceb0f5840d5f25966ec1f21884b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USY251515062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad1025b2ea92296a9b0615d78b6e84695a4e5cd00d4945086f42370e8895c93. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USY251515063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecfc6d60362d2172f63a359a9c6c8dcbdaf7cdaa4c8baf5ecaacb30e8aaf761. 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/USY251515065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacb5f1867d930c284b6780d1a3de1f8c0e9316b5d50ce89068935bc4f4a6e3d. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZ4H21700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66b610205c39085e6d2f3e7d44aa7d723a09ce68f527ce1eee5cc2e51230a22. 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/QZ4H21700046.
Fornicating in Ethically Sourced Fair Trade Chocolate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5bce27c37104d46296a03e0159c7076ee6db695d88d42b1cbe5427fbcff175. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZ4H21700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de7bc776f106c558b87c28f805098c30151d432f44e49c29dd464811dc23e87. 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/QZ4H21700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff99806cfeecdea2b8cc7b6a6ae5a1d0569a5b37dd921344e6ad756d6fff953. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZ4H22200001.
Grass Obliteration (Blazed and Confused)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6546aeabd157da434c93a9d24e889402434eb45f6cbc5be58305b0210f918f. 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/QZ4H22200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bb72eb8130317c5fc8f2cf54311dad428104346cd0068e4c1009e30c6ca33e. 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/QZ4H22200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f121b7fb5d854c8e992f09cc5d58d6113496ffd9c1a231fefdff86af4c3ccf. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZ4H22200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ee5c43f119228b7ace3131e482993b5386ce0f736f5928472a8778701e9016. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:11:45Z), 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/QZ4H22200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc787421c85496d3f230b6a29249c627e4a6c636920f2a1f75e1a25a220bb0b81. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:48:59Z), 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/QZ4H22200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51652f6a3ef2641702cb8e1ebb8d5c33d947cda4237e89364b70c63097ce368d. 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/QM4TW2471499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4aa7e3eb35575410ef5dd0f384d764991f7fa3fd9eb90f62b7f4fc131c6462. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM4TW2471501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca870d339dfb760f25d6cbdcca6631e5c224f764491cf9ab90752a717fddce5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:19Z), 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/QM4TW2471500.
Layne Staley Went Down The Slip n' Slide
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc170be557097e95d7fd74d3274a6fb6d01aad986bca08b40ccfc3eafdb2a8b11. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM4TW2471502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56834fdc92b02671feacd10ff5d620b5ce24b6e5ab2a7005b6fe41384044f33a. 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/QM4TW2471503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7530ecacf4a102c92196a96221f64550458493f32c223a9b8d2a4d2a59837af. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM4TW2471504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27144877dfdcb824ab9ae07c7e9c4bccddd1258386ffe976cee2c30a477e8de7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM4TW2471505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a260d4155fd3768091bcc2429b7c675ce7c84a7d0b1b4fa3a530ddcfa595dc. 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/QM4TW2471506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8f3dd86be86063b8a6857b2cec3f606e40aaa6c336e66d4ab2beb514c49e96. 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/QM4TW2471507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed9e08b69932023eabcde24c356c8a07772924d9190713ca8b371d92ea06bd9. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QM4TW2471508.