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 0x46ffe77b178e20954a7c3ed70176066cd1d97433451d23aa8f0df0031550859f. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f85eda2-4551-44b3-9243-ef5a4cc7fee2.json and https://artists.proofprofile.net/proofs/artist/4f85eda2-4551-44b3-9243-ef5a4cc7fee2.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 0x4d3931b8ed1c81266875309cbe45c0fae3c97a779d5fc8ff8bd51bdb86dba464. 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/QZHNB2257477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6405aa373c0fdc80272f2f767e34fa3b980d3bdbdd669c1b4f3c1f4f52955250. 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/QZHNB2257479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d2bc9df8bdd6c770c833d0794449fb9099fca55cb1ca27d24c1769921a933a. 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/QZHNB2257480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d71935f33c7784ba479ba70645c5cbc92eca4290bbd47cff7e1fdaf13cae3e1. 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/QZHNB2257482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1248632a50a9db49244ed522c7c99f26c0af34f872ddb3e0d294ec2b352e78db. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHNB2257483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa44fc292073b244e53dbcbf28fa3b508d7daf39eefd291483cac9375894583. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNB2257485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d546da55d99a209b32ce71a3c9983c75ba4fb60a4f270ecc8d409b2cb524fa2. 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/QZHNB2257486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803e13d84488d65a6f4ca40a53bfa4e8c96a7161533d223703b8ab4fa29a0d9e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHNB2257489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a55359848e8066ed430585e42f686a232a1c7c2daf0568312672f655669bc37. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZHNB2257490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf24cd03341723e8040bb18078ec62aff317a44ab7c1aa32da495c80f06cc27. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZHNB2257492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99d8bc89c9d9f0d56746397dce249122d874bcf9f90c17cafda144ac61f322. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNB2257493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81de8b167b95e1e65ab2e04d97a2321760a30c5faca7b53fd4915e078578e79. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZMEP2225364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58747d3c0662784358b70b7bde78f817fdea0197504595625b611339627bc7ed. 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/QZMEP2225365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0988385cb0eca9dac5a4e09246126a8a031e6e546fe35898498cccfa588c9b6a. 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/QZMEP2225367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0515e77840ea91c8d93233c64233620c2a8efe69fd8942f30fa414e9ba1f71fc. 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/QZMEP2225368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d3e3695ba94d9f8f8d71e0af888cf329930c7876760f3cfb2112382327a753. 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/QZMEP2225369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ffbf32d58cf93575b222285ad7c5d0872526225cd7310ec8a6251a752ae1f7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMEP2225371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beedb481252640aa48d828611602959d1cb3023a9ae125abb9d35baa05aa8c6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZMEP2225372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa280c8ac3efe7f37cfeab9cf44f097707425e9a40f0ed9f24919b43dc7f16d5e. 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/QZMEP2225374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3d03743d8810d16ee00a057596bdca2e03bb0fa6d43b8828ba107c4a2a9414. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEP2225375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b4de2e1cefe3385dd3fa5efa058ad8bddb41a6275a40e80f4b85d9c6eb8d9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEP2225377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297e5a534b72e86cbeb0428f915274c41978b2e0a92989bf3cc2782601c2f8b0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEP2225378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cda947b69df48970ed5600d98e52d316f6847f7b6c8fa535cc372afd9d0478. 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/QZMEP2225380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5943320d2bcff347892fdc0c632e252822877fb19b383fd7b6065525b74730e6. 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/QZMEP2225381.