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 0x955f8ef28e993848bccaa48db578d663c92e9bd92a48785bc9d7cbe1974e2cee. 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/241f2598-dd35-48ac-be5c-6d9f7beff160.json and https://artists.proofprofile.net/proofs/artist/241f2598-dd35-48ac-be5c-6d9f7beff160.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Half Remembered Dream (Jesse Klein Edit)
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 0x3ef0b821d08cb885fc2816509b1be8bbfdddc7d9a180bc4882098e3724334332. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZK6Q2261572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b26719be35c94bd002398b6e9d85e83f407e4d229e64eccab462745493a2620. 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/QZWDD2268351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0f558163f6ef238435992320dfb798547972855ffd22dca2b6d3da0ddfb4a8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZC5T2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d53a248c658fda9419a456486dde453889d0b2c61e6bb8d619e02fddb2ba51. 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/QZC5T2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b477d043e72250140d151f99ec376eac281876e59b754c6c06ddb6e9b1dcb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZC5T2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8bd83c63dcafd08bbeb8be176b8cb7efed5268250cecc1b5e4285f5cda26ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZC5T2100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500556c314d17a914565f5ab7dce4d8caaae6687bb4ca106bbdde47ae2d24f55. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZC5T2100028.
Center For Kids Who Can't Dance Good - & Friends Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b53aa343d2687bd4172ad84f2b44a5ba22452694a2f3bcc2f9bd3112b424eb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZC5T2100024.