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 0xb586a34efaf4e5a637fa568b366a6434b115c9224f859b704ef96c5c826ae190. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8409de50-9ada-449c-87d5-0caa03baf34f.json and https://artists.proofprofile.net/proofs/artist/8409de50-9ada-449c-87d5-0caa03baf34f.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 0x1972fc48c70c25f1767ae3125c1a49b52ac32f83ab4760a9f359b37ba8e1fc57. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR05P1600121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe13adb2af606d9414b89bdf57d84b44d2e9e28306cc063d7abb535a04284112. 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/FR05P1600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a031ecf81df0afe3eb033bd06bd473757cf55b95c864c4be930b1316821306. 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/FR05P1600123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61ee2ffcca5cd6624110dd57dcea6f80be3259990c8a6a155f27101ec3cb9c8. 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/FR05P1600124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1ee9c7c32fb58ead08d9bde69c6e565fed55791cb4a0115cb0ad62e943584. 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/FR05P1600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9a8661c9c5626cf4c6546cffb4fd77acbc33f7a9240fd6f10129d75a8f0d71. 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/FR05P1600126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe980691d598db81de8b0163c3752a84be721b9f08ab99e159fe141de03ea147b. 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/FR05P1600127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b2d9d87e1203d9f1e4a95322040bb426594dca6d4d162ce37c441e04c042c4. 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/FR05P1600128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec26a2828e81f7c382a79a939796283430a1cc7e350f3f8936aadc7e7da00a6. 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/FR05P1600129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ccba517f8c6e008275f740ac2dd3b1505fd517ef4ce10a3b8b448666ce930e. 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/FR05P1800226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1ee9c7c32fb58ead08d9bde69c6e565fed55791cb4a0115cb0ad62e943584. 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/FR05P1600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7b77dbda4d24eb98b393f51f32cb28b5087afe8d640fb060d2aa2ba438b0d1. 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/FR8FF2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699929054a7200c5230049ead019d54e13234448a3c04e3a9f8a1993759d4628. 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/FR05P1800225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ccba517f8c6e008275f740ac2dd3b1505fd517ef4ce10a3b8b448666ce930e. 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/FR05P1800226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59eccf3a93102e537c8612bf3224fecd39787524ad8163788af9bdab75e157b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR05P1800227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99352ae51219cdeed9c125a79f6c0687c65dfe964a7b01befe6f489b7b293b6a. 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/FR05P1800228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba26efefd9c2183ec43653cb0db4fbe8635a854988f407a058d73e6d6367fa5. 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/FR05P1800229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9546d9e39e53c693af6c38e434696f8cf01b8133d42bada5178b894d1e75c88b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR05P1800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc9e8a321e8ec5e98c76fe34d9707ed06be8b5cc91d25241d2333f54aa6b00d. 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/FR05P1800231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d389e3279cfa61d8000a78fe9d58016dc7ae6647bd87fcdaacf04839283ec8e. 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/FR05P1800232.