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 0x7a3d89c8f7ab0fe0dd744b9d2d63694a5e22c0f622034ce3ab2111b77f08fd7f. 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/910b7e1b-2bf8-423c-8dca-26f8a49dc60d.json and https://artists.proofprofile.net/proofs/artist/910b7e1b-2bf8-423c-8dca-26f8a49dc60d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rocket Man (I Think It's Going To Be A Long, Long Time)
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 0x5b51f2cf9b243a26c5fcca90ef5f62eb450f820b37aea930e52c8059720d073b. 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/UKT8G2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3895890c8e53f0eaaa473df4eaef8d8cc626a7b088637c52aaf03f7cf7a3fe63. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKT8G2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf574f0bd2ace83a91e1db3381c74f0eaf73a3d4c0c40adcc8412db24d3af0a2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKT8G2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a3bd950418f540f40ae719167d016ee5dbbc3bf5c12a82e4a6c1be7c07ec3d. 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/UKT8G2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37221e66e0d4910a085897f143b578026eb5a96c871096c4eef89d1010ac133b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKT8G2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3895890c8e53f0eaaa473df4eaef8d8cc626a7b088637c52aaf03f7cf7a3fe63. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKT8G2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820f6d8968b908ec2517a2ca61f86f282bb6eb1080211e65cd9a6ae2f853600b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/UKT8G2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b69c1d47ff4efb89f8c93881b07a181559721eb49dd04f363c31f6b39e4dc2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/UKT8G2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636e871223fecfa5efdb403b8edc02bfd7d78d46f7c2f4ed1ca2ad07fc0d7f8c. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/UKT8G2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1208da7a0bfd1fb9c89bb23eee592080785acbbfdef78375f00acf8d9343066. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/UKT8G2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b51f2cf9b243a26c5fcca90ef5f62eb450f820b37aea930e52c8059720d073b. 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/UKT8G2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf574f0bd2ace83a91e1db3381c74f0eaf73a3d4c0c40adcc8412db24d3af0a2. 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/UKT8G2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a3bd950418f540f40ae719167d016ee5dbbc3bf5c12a82e4a6c1be7c07ec3d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/UKT8G2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa2469c78f659f8b1162eebcb4e79fa6a25f304cb0fd67cda1d9846e2b662de. 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/UKT8G2500011.