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 0xc1e7d89d987c3966f98aa9e77aa3ed315ec47582a77d107b7e6c58046fdc47e0. 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/e94f4852-6d40-4773-b200-8275764cb3c3.json and https://artists.proofprofile.net/proofs/artist/e94f4852-6d40-4773-b200-8275764cb3c3.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 0x775719f093d4d8cd48c62e3efac69775bb9b7a85c0c142584bcb9a5e1105c40f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZMEN2216284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0103c17fc73fa873bf5e629c46436ba4544222ee050dc7f1d93182119f27b69. 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/QZZ7W2458308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304d4cb0ec07fcf0e9e9041745d03c8311c79ab6521ecf1b7eb964c4d87c131a. 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/QZFYY2502277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737125322874c1b392ee343e8811018c41fddbb652c39f3c0c17650c9a3448bb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:14Z), 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/QZFYY2502420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda85be224b24788b343b0cea9b02e626a88e33b8762430c5e56f36bca7d6df1a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:20:50Z), 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/QZDA52520232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa419b9b3d04ec730b488d04d0277ced18f7de18b7f79802f74e5d1440281e2. 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/QZFZ62508246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8caa2206d297065d96c676b3e84d2d2364b51771fb73aabd5561601b7583e88. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZFZ62531413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e0294ab39fdf86c34b9f9a633be72d2e61333fd7f9ebd94a887724bb17a9d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZDA52574372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e4c5e504e6b1205ec409ff64a52f3266f76526a8fee3e190cdb4b8a9f0c83a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA52575664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9adc42742edf7e61f3a6c4181f2b9ac8a61c25346e7cda673da2ae278ea17eb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:54:48Z), 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/QZDA72557060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7ed7bee6725a72c6881f4655f6d95aa5f89591d1086cc4f3c65c43a3a4c95e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZDA72526806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85249d10e9e04efe428dee25157ef3a8b6b33fd339979767438000ceb6c01a3b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZHN62580420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ba41033d5fb69a40d93c336fc77a87c488506cc49bfce1f50ebfb07c4ae4f4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:36:11Z), 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/QZDA72557135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8144eb086e68035cec06d085370d5162b4f429fcb77767a87fb020a5b7d577. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:20Z), 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/QZTBB2505522.
Alice, Did You Eat My Soul When I Stole Your Heart?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58197b2b0e252cf9955dc616668ed45bab3622b67c94bd2787481e613c5c5f7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:06Z), 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/QZWFH2546029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea4fb22d8191c75d61aa744471a8db581550ae478674393643dd98ab063f8cb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHNA2529510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88b363277b68dfe6c311120b12a0564b39d4f77d0a5e685dfacee09675c54d8. 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/QZHNA2529513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325f040d63c211cbe94491ceec0d801585e98f91ea5cfc94fd539c088c76360c. 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/QZWFU2544445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1537c230e046541048316608404fc6066f5b006b048dbcec2378d61735e525. 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/QZZ792568499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d6cd2dff211c3d65f14afe3cf744b9fa140e4e678fa12bff64e7039bdce281. 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/QZDA72568651.