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 0xdacefab94f7ccc590b6cffeb37f2be6144cc7b40d94e10da983dd020c557fb98. 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/f54eaf10-e0cd-46d8-b722-483582c0134c.json and https://artists.proofprofile.net/proofs/artist/f54eaf10-e0cd-46d8-b722-483582c0134c.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 0x165153b5b832d0c03ac648322cfe6a6218bbc50f30675428fbb9fa31d973e1c5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUMEV2021823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99efac2784ce1ef1e18a7e4936b55a088cd78f4c1b61247e96dfaa5959207b7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:20:40Z), 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/AUMEV2146373.
Intro - 3rd to Cheese and the Sea - Live from Sydney
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f76d4cf75f80cc589fc7e4257a23c5dc903075c93de4a3a2c11886cb60b01b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:49:23Z), 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/AUGBT2307010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d2601d291293fb112a55c9768ef1fc34ff06041f48f4aacc654c8e8bbcc8c5. 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/AUMEV2322508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedda19e5a65c2dc8b514c7adc650b56311709ed4d0914a264f60e400f5e17bb1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2322510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6940f9b880869bf70182610f8d7fbc6e79c979ce0d6aed893368a988ea96c5. 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/AUGBT2307763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdccae30f3098760fecb47bd58aeb16a072da130ba022dead2541d808b0f7f9. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:23:46Z), 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/AUMEV2265293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bccbe24b8091e13bd31a9d8fb7bc61bf3ce9f30740e97e8750144b33b48dfa. 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/AUMEV2322518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e0240959a8a1a9b2e8ca50b4873ec03d68a681ebfeb7b283c4c4d1c6bfbac1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/AUGBT2307764.
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 0x5175b8e99bd62e6fc121e5de077be8732c706b87cec34c2641ddf89d3c1fa33e. 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/AUGBT2362915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d82063d07a2a239e693d1834b0f549514e3d8178f6e764856896844cd841e6c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AUMEV2338608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ee33d0cb2a1ad0dc2f25040cc654ad87a56de36d7650296569cd1949b9978. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUGBT2327566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0580fa353ea73067ec0da93a3eeb0000c76db33ea810369dfa0fee7c3021fc81. 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/AUGBT2327572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb07ac013dcdfb3ff3177c334f567814acc141d98d9f1bcf4e6044cb1ccd240. 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/AUMEV2307029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d91218b801aa38cde7777016fdacdd22723cd7ffcb21b58a3fb42e359ca9fca. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/AUGBT2362929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b9bb5ed761224f9d31df3c5a9aef208c875c2e7d14820c67e7692c370aa2e7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUGBT2327574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80998ffc1464edbe5ad0f7aa3ef7d2451e0d4ac5f4718ade23c0f7a299ff651. 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/AUMEV2496168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e77dc5c312f004dc1acc7061bee5643d4f1dd33af365bbade69fcdea29e812. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/AUMEV2525824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6b703eb22dc44c2a19b9b354f422b583e44cc2edb64ae552845e390d763966. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/AUMEV2525830.