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 0x4e157cc68dfd4a834752442767134a6c4adc5f6f6eccb1f4aaf3345bfb4c0c01. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ef97c79-00d6-4361-9f12-a47cf4c26f3e.json and https://artists.proofprofile.net/proofs/artist/5ef97c79-00d6-4361-9f12-a47cf4c26f3e.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 0x4a33f3473abf406e6441eaa3004f977fecd622f655d46e047b12f3ce1c9b40c6. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZES51941738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2e56cbb4cd559b17657734bdb1f66bdd908bb3f71827e9674c625dca6b91f6. 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/QZES81912314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f908affcf6844fdf2b2c8df048548bf2824fb101d9a12f8ca6ac9e01febde14. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:07Z), 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/QZFYW1967228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7357095d578ea657a7bd5d267e448e284588e4210bdc13cb3277b997af6c8567. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZFYZ1957660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c9e0bb00d46810d4f4d56cf826518df377338f0fbaef5ec60cfbd138a3b87c. 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/QZFZ31981619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce892d82cd51f0bcb39074425d0c295698051eee0494b63486feb33a4da37500. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES72022831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fbfd83e1ffc45ac71f9ac5f7291ebb060059ec0f6c6d5f22f439a6a83e9595. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6Q2060419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5444ce3ccc13abda76ef6d5e11de8adf48cdc9dc5798d2ea6c1e43da2f133e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6P2066397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0d5261c6bfb066b67e689113805613d31d40348b7e4bc7726846ce879394f6. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZK6K2036835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc744417e2f2ce439c20297fca101a78b2b4718f5ee01eb63fc66bb08746b0624. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNWY2018556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305b2c32319bdcececd72ae2a27173af350ded79646a0b8615c825970b8c3f9. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZK6L2138664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072d5cf4040b36bd721776bc00a77ef73bf61f8635a7954c8675486175398754. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZNWT2151136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838acbc6765bad71b901daf800db66a40740fd2be7fd51c931d35da97d524474. 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/QZNWZ2159313.
It's Beginning to Look a Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd06d1a1737c8037377eb9628b8ee9a963588f61bdcd42341a39d2fd9a21d9b. 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/QZHN52207343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb734fc5add566e0cf936f96e4a79ffe286eb32d3d8519ac829f0ec3fff4b70e9. 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/QZK6N2227778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c72fb9bb6b5ff7e87b8f9d4298c1fdd90fb07cf0f56634206b3d2367a7fb58. 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/QZK6J2283183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd1350925af19d7c66676368d9d6b8df033546ae1bc0e050273779258627b7d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZDA62317654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9513bcca0818bcd6c2693168319936b8c02892c5b07f9e46e9be8f08b48e639e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:00Z), 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/QZHN52355009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03747de6afa4a6a67c29ef26d23ca579ba328e816b2dee91a467ecd2c133a85. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZMER2317669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76ba393720a5dc17535476bef2779cb8d9319e0a20fa7de5f6b6aecc00f872b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:35Z), 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/QZTAY2301410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954d235afc60e95d69da42619e3bebd903a2df62c75dd193c762152b60fa5266. 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/QZFZ42437798.
we can't be friends (wait for your love)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4d5db5919628d2770f2a15f19a1434055502949018b1f1d1574eba4db26dd0. 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/QZHN92432409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0802e5cfddf7ceee82609dea646f84b7d5d7139d237dffda40f79eaf380396c. 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/QZNWQ2437628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9fb99e87361246975aee04a8e7cb7cea2e361dac60683bb52a8555fc8d82c0. 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/QZTAT2426914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b536e74d146d9ab956c096bb80cb69491943ce997428949099b0b4b6f19455. 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/QZK6G2108330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceefdbd100b95ca65efdf3aa39bd32158235532af5412aa3438872e3d445b6af. 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/QZK6G2108333.