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 0xa6433fad2917f9d3ea09c826cb7979eb5eeaeaab453f7a4a818f89cfac6a0611. 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/bf1ac67a-76a3-4fe1-85ae-cc53ca1a812d.json and https://artists.proofprofile.net/proofs/artist/bf1ac67a-76a3-4fe1-85ae-cc53ca1a812d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Human After All (feat. Sierra Noble) - Single
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 0x48fd8bea6fc0b85ac35fb1f95184fc9dc409b45df168ca02ac53b3de527f1fb1. 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/TCABE1279813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe012460a29dc2c9dc1ff5b1d6ba69943f5e7a8d715afb0742a5cda51525e9a45. 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/TCABX1452634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462db99dab92b4ec5f711ae455a6d6c981b915010ebb8a169b3d4447a45f496a. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:36:08Z), 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/TCABX1452639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d62a23a8c8e1dd13700941568765d6d1a6a593e40a54d12771c87eeea774a. 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/QZ57C1800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca11db57e7d739fc0ffdb6fc0fb60383fc29ef89d4b632c9449fa20be79d624. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZ57C1900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6656783e293c724b82ebfae8272867e7acd5ed8c9e7ad2b653f813ebd800e254. 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/QZ57C1900171.
When You Can't Hold Someone [Live (Acoustic)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b3fb8f5b39d17945c65e423918af9b755394062026f4bbedd5b31902ea04f9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHN82006113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5ff1e8c583a41e8bbc21b56601040ae2b586152dff521f10e9c3d38e9b06f8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAN111500187.
Days Turn Into Nights - Solarstone Pure Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e774613b49364c7cfe87118431e607ef3d9d3fca150789c0c17d3836c8a9df5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAN111200600.