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 0x54cd0165c72496b65cf779f239f7660d5ecc7583bf0e83d8a4e0e67b9e888088. 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/25bb9417-5242-4a93-bff0-7f1c55005f86.json and https://artists.proofprofile.net/proofs/artist/25bb9417-5242-4a93-bff0-7f1c55005f86.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 0xf0ece9bc13804e0010f3e3e7ea8a2f78fe402c2f15b744a8f27061c39b450423. 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/GBCEL2000457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22826d2980620be8171159bdf22519bddc97aa734781eba9d70f75c593cfbb5b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:57Z), 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/GBCEL2000458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119a70bf8e544c9ae101d653b664a9ea587943789efdf829592b9ab3514991f4. 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/GBCEL2000459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e59493896b20b05a75d86073c644002f31c2cd529cbfadf4ee97d14d35d242. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBCEL2000460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb69d72ab2fc81c5336f1e1c8d7b03853feb9c0ebea0e40ac2964f2342e22b2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBCEL2000461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784f0bdc33d7b191d2498c860957b92c4c2744c615a3e5a6590d5ba989bb6ca8. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/GBCEL2000462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeb4d49cc40b30050db7d9e9877d64bc9a6a1625e2447153dd19f31bad50785. 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/GBCEL2000463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c16fb41a7fc030b4cd2bbd5eef532b6fea094c092770ab889e935aabb6c744. 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/GBCEL2000464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad92d367058f2adf7b4f1b8827b978f8f28a830578b957d0fd648738f0e4b51b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBCEL2000465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa0704f6f45c3aa11c6d0835ddb4b84c4f178b8789760cd45fedd4d2955152. 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/GBHLW2500729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bd8485918d37607aeb3dfc96123f4f8eabd0d97033d7146ba9157dbf62d57d. 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/GBHLW2500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63016518fb310197ee8cd638220c99a005c1c5af4fe386fc79fd2a3c068ef7fa. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/GBHLW2500733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06470b7d9e09a0c4eb8abfb2761134deec0c3432d21dd50f0e87f2874abd1328. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/GBHLW2500734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e88fec4ed6ed735f91ebcba2e612785754f1c8e876aa402cbe1f3234108a9aa. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:00:34Z), 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/GBHLW2500735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14752c0a850d72b2b5d090ee9b3002da5fae5b83dd23cf43bf5f9a351d37570. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBHLW2500736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74ff7b6c7900e37d2ec55ed537cf23bb62777783b304f75c2a1d72b75840218. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBHLW2500737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0b12d469ca7af50ace30e3a315ff3d96e2c9d59c855629a8af0c936842d77f. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/GBHLW2500739.