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 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 0xfa73aa090ed68f97253e2f88d749b0270a8126394dfd20a0d12d148ece12f3ed. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f42e5673-fcef-440f-9f52-be5bd13c07f9.json and https://artists.proofprofile.net/proofs/artist/f42e5673-fcef-440f-9f52-be5bd13c07f9.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 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 0x1229bcbbd9512de7298752748aa12680e3d1cfd7c94d7759d83a8f968a3cd6c3. 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/QM6N22486212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137d969227d7e0c54a2d04d8a05dd133f638bbc632471544151e996bba19f951. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/INN2I2404689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6409342ab70471156413cf46c5dc6f40d0383f183a60be4b00500588db1bc080. 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/QM4TW2479040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4e039d9b0e5eb19369eab7221701a560c8e821edcc1acbcb7794abf6b26a9a. 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/QMFMG2326334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e389c184cbb62eb1ab355bf0baa4cf219f99dc9b9bd04c361cccfa8bd2f689. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMFMG2308820.
Ubasiyaan (Live from IMP-X Acoustic Sessions, 19 February, 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004fef10e943b96c80c9869ec4c9c121571f35c9da8e3bb4319a226a1675dcca. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM6MZ2399130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b9703128370d199a00ea7ef7503a476028e468cea6513822fcabbe4fa2a248. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA62290958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa21d803b778b5539780766c3331b746467be285ea8508cefd5e50783f30543. 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/QZNWR2126070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01eefc9e92720bcfb778afb3fb35a2d4a5ae54e48ff4db3a938370bce33aa155. 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/QZMER2119044.
can'tlosethistime (FROM PLANET PUNK 2309)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6226eec51c181d997d067c9469fa5bccb6aedebccfe7ff102acf60ade1808b6d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22570070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef60ec095f78b06856171a1b9f5b7c39d31d3a96432c69b4432c4f192fa03062. 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/QMBZ92434820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6959473b2a394d9ddc52eb2a0da2e06bb3270d3bdae15b40c0e7340134061f7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2569294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef60ec095f78b06856171a1b9f5b7c39d31d3a96432c69b4432c4f192fa03062. 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/QMBZ92434820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004fef10e943b96c80c9869ec4c9c121571f35c9da8e3bb4319a226a1675dcca. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QM6MZ2399130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30343affa3011ae3d019f32f707ba39580f50e24d9b51cafee00bb68039c3729. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZES62586956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd93774eadc633fb3605ccb0c84c7076483320a2c4dd5502e6ce81d718dcfdc. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USCGH2584880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0543a76f70cd6d3c33fef04430fde091f42e572574ab7b7d0d80fe2b8339bc0c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QM4TW2545987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef60ec095f78b06856171a1b9f5b7c39d31d3a96432c69b4432c4f192fa03062. 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/QMBZ92434820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5748b59c25befe92d058ab052f160109021035d6a4df89b53b47af29e95b2b3. 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/QZFZ32591092.