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 0x91ded6d2088d456c908be8655b2f0a97938273616958e7105a4dbe591c64095d. 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/b81180f0-59f8-4e55-abc0-39275bdc27b4.json and https://artists.proofprofile.net/proofs/artist/b81180f0-59f8-4e55-abc0-39275bdc27b4.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 0x9b1297eb3cff5314acee26d7372f1036ce1cb98687bc32376d5baab97e0fe2a9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/AUMEV2532486.
Christmas at Hogwarts (From "Harry Potter und der Stein der Weisen")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e78112b680bdc305ee8826aea9935489219e0461662c18fab6266a8d22f33fd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/AUMEV2532488.
Harry's Wondrous World (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64270729f19a961db5a499db6730d539ee50013d616205249931c2aaceb2e8ee. 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/AUMEV2586516.
Knockturn Alley (From "Harry Potter and the Chamber of Secrets")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b75cee9579be57220330d846ad4edd8fc19c51bb65eb9817b974f9110b3f91. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AUMEV2586517.
BuckBeak's Flight (From "Harry Potter and the Prisoner of Azkaban")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddcdaf46f2667f9cca7de063e4fb98b2160a6f8f0b5067b00cd8820e0a06834. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:35Z), 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/AUMEV2586518.
Visit to the Zoo and Letters from Hogwarts (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a0560cb8c2735ce7e3f6421f7022ce5ff2e5b043f71286758672e681ad55b. 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/AUMEV2586521.
Leaving Hogwarts (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004f6702c26aa61f5f0eff09a658585e21c0fbc7fb3462d7ddbf8b90d9da23b0. 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/AUMEV2586523.
Secrets of the Castle (From "Harry Potter and the Prisoner of Azkaban")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d875748f2deb4b2d13cfcf4af16d208dab4147ec673e39bba995f78d8df2679. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:54Z), 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/AUMEV2586524.
Meeting Tom Riddle (From "Harry Potter and the Chamber of Secrets")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34be6829ccaacf40e87a021eb8baa62586f1f60b0e54f6dde7da2b91d498458. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AUMEV2586527.
The Quidditch Match (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fbecd6a7a4ce2bdf6b36056d37ed4a86d4de06ab9cd315fe3261b63d0e6cc5. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:09Z), 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/AUMEV2586528.
Fawkes is Reborn (From "Harry Potter and the Chamber of Secrets")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4373b49c5a34a3165635253baa4d6182a7a523a32edbeff10e7669fc5f273415. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AUMEV2586531.
Hagrid the Professor (From "Harry Potter and the Prisoner of Azkaban")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01374f06b554de2b73c1c09d7545d5454dc634b0cda701d1ebb212d74d646b05. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2586534.
Reunion of Friends (From "Harry Potter and the Chamber of Secrets")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2b0a1badc2ddef91df505e63fb8d3d3f3ab22f8ae2331b74db4662cec36442. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AUMEV2586535.
Diagob Alley and the Gringotts Vaults (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8986df97fbf52f428290655938e67febb7e8dd1cccfcff4b1b72c1c5d602d8f3. 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/AUMEV2586536.
Moaning Myrtle (From "Harry Potter and the Chamber of Secrets")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc1e278cc4f1cd6c32a3705df441bac6f96afc178ae17f5ce94f6cbee606d92. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/AUMEV2586537.
Entry into the Great Hall and the Banquet (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69d80b467be85c58f489ea83fce7941388dabc98916dcde88a8799b4dcc6852. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/AUMEV2586541.
Gilderoy Lockhart (From "Harry Potter and the Chamber of Secrets")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb325c944572c6e54d543b2b6173f296d0e004ee61428c446ff1ce94ae03ff6a1. 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/AUMEV2586544.
Double Trouble (From "Harry Potter and the Prisoner of Azkaban")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b3ad907ff20b2add92cc652be9f6c8795016cee78a684f50c18a723e97662a. 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/AUMEV2586546.
Hogwarts Forever! and the Moving Stairs (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1861a0055daa39e8f9cad839431b0f9b9bfdbf06192498182162ce1aad3a2873. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/AUMEV2586560.
Dobby the House Elf (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a314bb4dc560c7b68d979c50e854178890c21b8fe66866479dd2074ca2b01. 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/AUMEV2586561.
The Arrival of Baby Harry (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c423464ef166a67dcbbe5f0ea7b61cf626bc789efd8e8711bff795a053d30d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2586564.
Lupin's Transformation and the Chasing of Scabbers (From "Harry Potter and the Prisoner of Azkaban")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c5b009d7c1e30f837448161d450d98fc28038bafaadaaeb79023846be10ff3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:47Z), 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/AUMEV2586565.
The Invisibility Cloak and the Library Scene (From "Harry Potter and the Philosopher's Stone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b5cf9ce9fd4ad23360508cd8497cfba30b436a23582a984262d425bb116f04. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/AUMEV2586566.
A Window to the Past (From "Harry Potter and the Prisoner of Azkaban")