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 0xb8477d7fc40dd6ff418c97c270323e7cf64f906bc439f2ece4208ed0aeb73fc2. 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/c1c95c06-d988-4ef0-b85d-9c25787b7791.json and https://artists.proofprofile.net/proofs/artist/c1c95c06-d988-4ef0-b85d-9c25787b7791.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 0x7b9f953c90876ae941fb479f91ff3bde1391390e8d396ff0f4b8716cbcedc59e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCADJ1763991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc7d82b3fde879d3c8da17e5866a808a02861548ff8f321b0b79f152eaf245d. 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/TCADJ1764244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330fa8b160a896f27ddaec5bd69012ad1cdeb2d204357736644b8a95f41dd9c1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCADJ1764301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf70891395c05d8b6031517faae9fb2017f08224ed45da38e5c1623c7764509. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:30:36Z), 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/TCADJ1764339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62588a873380c8f5b88e7bddae7d3128702e281cfc8e14ff29ef28179fb28b0. 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/TCADJ1764416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9133d94d0c65b9b5199500f922057f392172d1e1aa8f120c6ebce5eac4a89fd4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCADJ1764440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd885668a13dea4b8ff682e86eb739a632136f21f1fe98c8b6c333b2aa064c129. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCADJ1764447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151613411e72167af15da5a3472023b14f5cc5734fb640c2307cc1eca7a58de0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCADJ1764458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e39057d16c6d3b4128332eb2b7ee510c71477f4c7069ca925ab9685782e8b1e. 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/TCADJ1764472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26e5fbb2d288eb87a26a10891e0007afea1fb27b48c1b2b540e9fbe43ffc771. 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/TCADJ1764478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be60dd203059d826d156ff9604b40988949beaad669f185a32a7d9da43a415b. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCADJ1764480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cce076d1fbc201c328ccd5026c363897616a1473e4f688500df9ece376bfa6. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCADJ1764488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d898592d9da9f4bdc159dd2e5c876422473d91c5b2a6026871d83c579dfcae3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCADJ1764489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652f27a8528eb3c3dec8c9720902c112b9bdc2acc92e8bd944e5bd4669f1ede0. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCADJ1764604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2039f021e2fb8660b895e976149929f34508cbc93e0c755227af6b6e001b3fbf. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCADM1899205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756946eda3e92e3140229a1bb1ebb563408486737f38529ecd6cbde4d63b1a81. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAEB1937221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312c72b7a71e74d423a5ef18213ca57c45f49ca1d166106e5468824ccb0220ef. 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/TCAEJ1977637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b27154ca102200dc1f42b5a8637f5c943740b34665ed4e1a1976fc98a87efd. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:52:25Z), 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/TCAEM1988766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb82ac3d13e751786347c4466dbbbed97e9b55dbae5b49e508ac897a7d473d30. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEN1963316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3131b3b61e50f0f85a9d10199a079821ae31d291920789b413e6fa0e23f0b605. 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/TCAES2075097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa32e0babccd59a65e7465dbdb9dc5a2c919ac25ac019cd9df0644e4bedf1af. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAET2015261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d47b5f9111ecc74cdae5885b7f85cc4d7d6b819e8ba5212ffd6c7deaf942bd4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:37Z), 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/TCAET2015268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced6d8e4365688ac4999f3f589a450f38c05a9a8d47e96380f8073e6f16a3eca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAET2015283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7eb99a48447e2131be91a909d3be6313bc65d8f7fc0e962d86cd14c163cc21. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAFQ2133008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dff97d4e8d4e33c1cd973f38f5c8d34c098e6a7eb210857ca86af5079c2456. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAFU2156156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7b35883144b77d712f702f49b248e651c246cb85235d4fcfc381abb0fa1963. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:11:26Z), 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/TCAFX2136466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19ab4320b390f47b1103c45ed99afff954f656ec1f29e8ab2cd9379388ff855. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFX2149370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0a127a52510e33fe78a7bd6f6878da72e5df0f133df288782b87535ba2545f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:54:38Z), 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/QZNJW2294597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0704e76429fa49395317bdd65c2b3704b265d5bbc24d3a68ebfd83a1020bcb2a. 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/TCAGS2397856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05335fa3443184289e480614a0b4c0b6938390b5707d33db1b9390e44c3146d1. 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/TCAGU2305742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd273eb66bfd4e3f50e22c4e53d246be8248098f3275ecdd829ac4899366269c5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAIE2409563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65fb2d487f1bea8765af0e3a9c6e5a1463408a974749288cda3724cc4815a0c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIL2451495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f67519ca15c45bfea2a9bd01dfc4f54777806d9d92a5f485e9fbe51052def2b. 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/TCAIX2462747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c65d901a0b0337ee7a464beebb0551f5cb8bfa7c62cf099417bb4d70b49eb1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:50:41Z), 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/TCAJJ2502887.