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 0x4003f863f0e3660601588f466aa3a2b4ab86d563436e6c968277f1a0546df18b. 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/a3721626-12b9-47c6-ae69-427e8d13133d.json and https://artists.proofprofile.net/proofs/artist/a3721626-12b9-47c6-ae69-427e8d13133d.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 0x1ab4dc2f08ef979c36fa5bc25048ae9301f62e374fa3ebff98791ee3726d7fd4. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PLR862200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f16e525ec01f617043d60af06857b88eaa174784aa43dd42f778e15b6f9690. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PLR862200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538f57586ef566272ad88763106a9a1f17a826f562522106e677061788fca01d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLR862200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb9873db80b6290fc1390752efbcf055eadccc3628fa8b5060da99982241526. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLR862200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165759ffb208e078d39208bb1803c57b20596ab8cca9f7a5a073e623d8b098a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP52316978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5ed09c39ef7bcc41d957c0d2d001945ab09d594b2ddc5f32ec46d6d12690db. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:54:47Z), 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/QZRP52316975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc514e85b5c67b332d0eed3e31edbc3a3877dc453432a07bc85415c7b285e5d27. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZRP52316980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d59fc6f4f6d6753ef54afc23c89becda48867ef58ce4d33c55fb5646c4a43e4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:27Z), 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/QZRP52316973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8eff2695b87f77b53491df162902acbf5de6570b4be589df788bf90096b357. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZRP52316982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cee199a793e2d03ab57e27d1f3130171c6f6d93c3b134115a267e6b60b1e29. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZRP52327977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ff2ebcf939a34499c9523431ee948542f3841ef702977c84089edb143a2cca. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZRP52327623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801a33d1958fe85bf4f72e1fe4ef3e31e74279ecd3777bf07e9acdc9535fcf3e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZRP52327971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c508a17101548d8436d427c34634a747e88fd3f871bbb5646fa45534ee4030e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZRP52379791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3943fe8cd62c5ce467bca4205484851d333d8ab3fecdd4756f93f5c592a15d8. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZRP52380197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd3f217958694610f77f1249550cbb74096cb0976423eb1af074942b2d8f099. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZRP52380196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f0df371062113986f217f20a3dc9d34df0c6294ed846a74d5819351bb8aa85. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZRP52380198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4710a1a1e59e3b1ffb803bb1eb67f4b08c614ca7bec3aaa209015c873c6c143b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:14:47Z), 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/QZTAS2311381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4784bdecd6e26ef43eaef32dc62b20b6dcd4fef0b1b92e8bd3782ce618daa392. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:31:19Z), 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/QZTAS2311767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c3c1a768557b9c7e4b2dbf415af99ada73383e18e750025f184ba3f0203e42. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:20:29Z), 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/QZTAS2362718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b584ed3f2fdea02f0500579ae66e93e01d392a42d1462a0e4bc3f37eb220b2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTAS2362715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711d599ef51e54804de3656b0f4a38bc58c93aa62ed382b3baa51b2574945740. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTAS2362323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bc0cf170ebdf8f13c93b0b9daf5ac2f1b53da3d61c14a5e8117e7928a234bf. 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/QZTAS2362713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd434823c7a8d87252caa8301745afa8afd592a15a15a2662712cdc88611336c7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB92363111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8225c264123e29dd6c0e679b0a665ff90731c8c3433fe880d4d22cccccf9d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN32415505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2bedc3846e31058c74c1ce003ad5417c5616845ba00dba5fe724cd558d1194. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZK6J2414033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b91d57a4db1c9622df5b1dacc6b17d5240ff9cc0c4cecc82de44f76ed2fc317. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:07:01Z), 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/QZWFF2438502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903ad5cd5e482f9f06fcd80fffed4aa2dac7e03c0a79cef59039c4fb86de0cee. 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/QZWFR2438245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bd3d03f5ffb464d8b035658014126d5b5370c46797fbaef1602059dd8e70e5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ72543018.