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 0xaa8e3f9bcf9fca252ff61b40a279b221967d554b3c8d1bfe6809dd0ee5693a93. 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/72b135ac-84b1-4126-baa9-42aff27db745.json and https://artists.proofprofile.net/proofs/artist/72b135ac-84b1-4126-baa9-42aff27db745.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 0x8cb9a970a4e9ca9430935f57614f48bc58d959034b008e164f9b392d2778241d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBKPL1511345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fabbbf053cab9f58c0a956da84dbbd60fbf9e54cc6708ffd82ab67348bf120. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:34:10Z), 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/GBKPL1511346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165036b5ae846d30e9bfc2ef16eeda96cc5f3d2e36b5dd11c511387fc64b6ecd. 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/GBKPL1511352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baea8ed50e6aa71fc4e40810a3f76f2fd9963308268dc2c6b41a69a2c078540. 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/GBKPL1511353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd223eb75d3aa3cb08b232a93a39be7accaafce892149f0a68f9da007c4f7d21. 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/GBKPL1511354.
Nobody Hates You as Much as You Hate Yourself
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182af1686542aea5c98d06ed014c3e670cd5445af566834c2d6b9e1bd8d09fe. 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/GBKPL1786323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e0761b3632f9eaaba134b984fa5a5e762782aa8cbb9cc55c35f545af6997a3. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GBKPL1826479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119304179e14305139ee5e2a97e96c86ab1fbaa20a91b7b26eb61846b11db1f7. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:05Z), 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/GX3HH2265202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea264551bcbe83eaa9d423812178824bb39670594f4ddf97c9306b3d30b24ef9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3HH2265205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5c09ee09595f6b3e4e8b20a33ea070b05ffdd9c101e46963e2a1720cecc807. 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/GBSMU0113966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc079ef51cc7743014fab9e98573f8d2c4821c88abcbc79143ff904836e3fdc6c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBSMU0114443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4dc137d2225f99ce0b599f4213fca3099040a8ec6172be696f87fae7a57cdc. 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/GXBDT2372794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0aa5fc575cdba64f371c30e328bd343138491c78aac5761c77d350918e7ceb. 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/GX8LE2469552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b61b22d0347b00ac0e285d91078d5b79349fae43375861db2bccae0e9fb3df7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:47:09Z), 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/GX4R52535680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94301ff8c474cceb95bca6f9a981bdeffe0413a46caf048b2e11f11e44f6d871. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:37:37Z), 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/GX5MX2516106.