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 0x2f5df2cd109038adff245c6ba1ee81bf50aa621abacca7feaf75309fc2abe6b3. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79a2b41f-93dc-4b2e-889d-625b84ef2cd7.json and https://artists.proofprofile.net/proofs/artist/79a2b41f-93dc-4b2e-889d-625b84ef2cd7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don't Talk To Me Until I've Vored My Morning Coffee
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 0xa862aba62ddc36cd0522e0112c7f1cf271d3039da959b0af70835a31eb7156e7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES92268891.
Bodies Piled Higher Than My Heart Will Allow Me To Count
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa733291a436a73bd8438e36106ea30518bbaf323d038ed268c37780c68c9b804. 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/QZES92268892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce8ecc35e691ca3fb093290ec6884d882dcc73dd29de1555a92b560eb8bedfb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES92268893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b8e439adabea0c2a6a862a3c303d542968b5ab21469f77fcbabf409931375b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES92268895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0e9364521540d2fdee3c8b66886ce75c235229da03c71c6a988665d11a35c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92268899.
I'm Working So Hard I Work 'Til It Hurts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1258f593141cff41e60ee4b2bd8c021dc2fdb13bccf821cedc27d2f97565bb9d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES92268901.
I Am A Full-Service Gas Station, Please Fill Me Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790160dfe855924d366ba70a8e1ba3d125ccfe5aa7c1e6a3d425c80344e72169. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZES92268894.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7209787d79b59c271a580503e20842f9344bed1d96f552959b19acfc4efa1fd. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZES92268896.
...And Then They Danced With An Android!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4346bf60c210de0e0d7e7f1507ca3b900c1ea9f7f523d264db8df329e89d34cf. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZES92268897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039f182ce88093344ad01e9c790d35b09efbebc0927b2a2ef4cf7d9ce55a7ed8. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZES92268898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf448acd5db133a77734283455c5ec8ca5cb7e867061c16df62d1c741f5ab7186. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZES92268900.
Big Money Cybergrind - Compilation, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd75f9a2417ca7ec69b481a1f76ae0556fd61de9653ab4780c088e6f39de03f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA011663207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cff7910b5cb479a51657cfaffeccdea615907710351f3b33f5cb8d38f5f4b07. 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/USERN1010680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f61063b22a7fb45c08a6cdc84110d47b77d4a9da701ff96e7877404917c630. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USERN1010681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c64a5ce7111b320fe41c92c55ffdd11d13273c603987fdeabace9d4969d36f4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA2U2300031.
This Isn't Foundation, Now Give Me Your Skin Please?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acf82c1eb749ff1349244c3e9900fc0a7001863039360b57f389da36f240814. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USERN1010678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9cc9f21f2829c5fb6553a3e1a7f786d4d0de464f3df45cf8060917398e5156. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USERN1010679.