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 0x504b0f03e313889384354c430221887a38792f188fb39794ddae58e2bef68168. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b8a2510-f017-45a0-88a9-e7b2faf8c94c.json and https://artists.proofprofile.net/proofs/artist/5b8a2510-f017-45a0-88a9-e7b2faf8c94c.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 0x6fecec5272d08ecd33afd24d396383e8b761f19b36d88a03c447204398a9d0ae. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ESA011914353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3c55f0149e3806d318165f021a7b190f227d0aae005eb49dee242df706b25c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ESA011914354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a75087986ae2e7e776366c48b4ad747294eaa42ad69bb1b523d26f978039d4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ESA011914355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18902a72731ac06de309627f9f7f56a94c71d810ba080dc491c74875fc8df317. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA011914356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf541da439c7928cb483f69f01b702f3ddf1e668e0a65f968b111861ec94fc072. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ESA011914357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa133943aa37c60f1034750060abe16ce0a8d3e714698d6f28bd3e29bd9dee3a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:54Z), 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/ESA011914359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62dcbaa46f901b904da3166861dfb5693474eeef581166f403a419d040da868. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ESA011914360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7ed74268868a2a1ae6bebc646f22501c990bec43ce6a30f6ba2900d45086ed. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/ESA011914362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb7cb78d2f226bdbc1542fd74b49241b5bd94ce4261c0ed1727dfc32025f2c7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA011914363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1499f0c795d9109de6c15d5187203dfccd1f2e689626df2c8fe538a3314316. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA011914366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df94351190074722a317d1b0f7718f295dcf59f5bf08ec66c1967f12e421157. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:36:16Z), 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/ESA011914367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5047e97bf022ab283ba8d20d65a34dae5e77f13f5a306aaa73dce8e58c4da966. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/ESA011914371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ba8f18574c32e48f29286d4ad5e4644fd0c7dc70e0ccf1eccaa0e77725653f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ESA011914373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5ac43edbdc681f6c1f61a9e3160c263f3ed9570f6f697c4cba51f129ccc20c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ESA011914374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6f21ec4a94e2709aada8fa92f9e9ca6833355498f2055018f2b31960825ea5. 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/ESA011916036.
Esatto - Feat. Showtime GP, QBA - Prod. by Laïoung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499f03ec42b64d6f9551a2e99957489123441ad885d6dd29e3f62870662dd429. 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/ITF252100125.
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