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 0x25d05d81f905bc8d249574e881746ff51a8e65a7c531efa1acac0b6ec4b9e7ec. 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/a549e2f8-bfe1-4d77-8ded-da919b5bb25d.json and https://artists.proofprofile.net/proofs/artist/a549e2f8-bfe1-4d77-8ded-da919b5bb25d.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 0x82bf131baf847cd9d77035c6f26c65a8e75b59ebd0e56cba1132e247528230f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL7112001153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6602273b1b052c5b233e3b2db5337874197c907752b5cfe70ccc2ebf75616f9a. 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/IL7112001093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72999838e6f3ed6eb4e2f1a5464ca6444c481486d0d33de8be53f4a6959d2e43. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL7112001176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe2379a435aa7111e58a8d72e8d2fb0c1806164736e61d1b61fa329a3926bc2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/IL7112001290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d54393d8c73d9208ff11cc2e5287dc5b2237177a0b2304bb2b51d0df2c12a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL7112001131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c73894b9378a8dd40061ad12abda74376b92766ea6bea7ac51aa96fd5487537. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL7112001291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd20e4d420a7be4426a8d571c44b1469bb23655ca17c612d6e2205031d5432c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL7112001098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5697f0044f3cc073b8fa5053b7e6c97c2e784d68d47a58228b89f42c97cea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL7112001092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf131baf847cd9d77035c6f26c65a8e75b59ebd0e56cba1132e247528230f6. 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/IL7112001153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a07914ffb6b60dd4090bcfe865ffdd4f120d815795d4a9261f85c59f19821d1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL7112001180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853e00b97e7459737093e6fb8abba5a5aff13eda6c80efb007feaac853de3d31. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL7112001297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c0905facbc65b8863dccbd5fb70c6999d8a80ef593c3fcb9abbecaec550db6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL7112001079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e2fec76e166321bfd2fb0ef9d70d78a938c9f2e6b0d1dc7c90d9ad3613e0f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL7112001146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b06cd13ed3afa625b5c7152530178d17aa50e44b0ecd243c6167e9df72ae4e. 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/IL7112001279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800c8ed22ab2ad53fd1e58b16ca85c653939e6bfee548ed33f746b817158fa5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL7112001078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da23116a816424d5fe95c1dd3e0df0eea177d0b698b2504cdd76398e12ca361. 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/IL7112001032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d18ecc51ef44d2ae2818d2826e03b130795371b670047e88cfaafdd5472d19. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL7112001099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bc343e80b7e1e101f10e8a8d907ede6bbed6ec24953732db075ef139405db2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL7112001286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d54393d8c73d9208ff11cc2e5287dc5b2237177a0b2304bb2b51d0df2c12a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL7112001131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6602273b1b052c5b233e3b2db5337874197c907752b5cfe70ccc2ebf75616f9a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL7112001093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5697f0044f3cc073b8fa5053b7e6c97c2e784d68d47a58228b89f42c97cea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL7112001092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c0905facbc65b8863dccbd5fb70c6999d8a80ef593c3fcb9abbecaec550db6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL7112001079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800c8ed22ab2ad53fd1e58b16ca85c653939e6bfee548ed33f746b817158fa5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL7112001078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da23116a816424d5fe95c1dd3e0df0eea177d0b698b2504cdd76398e12ca361. 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/IL7112001032.