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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e5c42ecd4fa27a8d11900735de83177dd563a1598c4115e8065731f1132243. 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/f1241d59-2456-40fd-83ad-a33d7137c25f.json and https://artists.proofprofile.net/proofs/artist/f1241d59-2456-40fd-83ad-a33d7137c25f.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23565f0a3e089788dc89607de15ae59e99dd78b96109812c30fe63389ed697ac. 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/CHAAA1706236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc7cd78559dc7fc4644797aa141783baf6b3e23a3b9f912caa0c4c3fe07a45e. 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/CHAAA1806240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc995af5ca328dfe5952ca3edca5b81f7eaa5b2a84c53b58fad5972d3030fd048. 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/CHAAA1806242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542da3ef6cb66572d7aec484704174587be67519fa09493224ba664c02be1414. 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/CHAAA1806246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53164d2e0c40576e73c66e21e343d7a7aa66fc8c8f9fbe5d98879777682a596d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CHAAA1806247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca70298d89319a91d0a2c27f9084a05416f0c7424629f09f213e2f4d04a9cd71. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/CHAAA1806248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdece4ea300943e126aa58608ba4e310f2875b630c18647604c52bb9120a65c25. 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/CHAAA1806249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced72c298d458d3f323c7ad04e37fead3d5629c166758f6d90d5f3d014add319. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CHAAA1806250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83a0b0f8f0333f26b50aee296432f7af47a735ddae90e01ad5ab71e8a4d8272. 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/CHAAA1808452.
Sunking (Remastered 2018 feat. No Religion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fccc1a65dbd0825fd2e4c734757972487b8668a3908262a7d558fda0e0e219. 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/CHAAA1808453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3040029bb52b97f59ed737857b15e67276a6830859aaf52fcea4c5969bfa3786. 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/CHAAA1908454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e43e3842aa6e2c3907078f4240f998f65ade703b4c43f158098a203250f3ff. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/CHAAA1908455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9edeaefc945a0fce6302c24bad43cc36737a7f32d23ac9406b5195f69e567b2. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/CHAAA1908456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548632fa728ae083a0c45f9964cf15701e71ea9d37df213fb573273db88ae01e. 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/CHAAA1908457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe368bab562a0f797a3e9d35dab7e9bbc7c87f48fa45e0d639e7db44af294798a. 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/CHAAA1908458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeb609c3eb318ae1322fd7a3a8c01ef5d66b946b2ec7aa9b2c7a22b18f10f32. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/CHAAA1908460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea1e8ee47081460547a61bcf866de1d4b6f357093267c606aa8f6bd3466552e. 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/CHAAA1908461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2195d3f20875afd1a58a70ca2cf8fb50447f13e54dee87976fa8f3fb165fcd2c. 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/CHAAA1908462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb788c1f9aa17c27f99dbb121b2b03dca1a1eaa4432d3fd4092beef570c582a8f. 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/CHAAA1908464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba537b495b065059358736a5843f936b7c10c517fd90c0031f902b10e9d2937b. 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/CHAAA2108465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e90a14b58fbc5d57c9a8bbc347edf27a85e4a7f80f16705de67875f1bb32377. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CHAAA2108466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97693a60c4ffe6c0f243efb15c8755af70836ecbc01dea7f46a64196ff48de03. 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/CHAAA2108467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103a7ddf4380f255a56186462e769eaecfd92822c10211efb2e59592db051340. 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/CHAAA2208468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5a0742aad87fa7a5712d0e983074fd382a42597f4a326496fa546c9f74d6f7. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CHAAA2208469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c7b67b4bb75e22d8dfa12579bbc8d35e1b09a11fabf5f01966e0266f82e9d. 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/CHAAA2208470.
Jack and the Boogie Man (Dolby Atmos Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5936f6c97732f42ae0778395306a120a592839403c92a60cbd2d490eb40297. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CHAAA2408472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0583f9a17d465fac474fe720a136f4c61e86b9e2600d772980e5bef49043ca49. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CHAAA2308471.