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 0xe078e068bed50e6a3ddab3ca471a6d8f67ffeaf4329d50685a539939be857a5a. 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/e99174d0-83ce-49c5-be34-71c15823845d.json and https://artists.proofprofile.net/proofs/artist/e99174d0-83ce-49c5-be34-71c15823845d.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 0x6509b74d13b6f044147e962d11fc9b9b77cb77ee3ad37d8af948ff64022e7e7f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GBCFB2200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f37938b290634e694c0e9448c5a837fd1678d14faecabcc467d11bd90b2ab8. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GBCFB2200554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdb0709c2e0d6e70a2047f380fdcdaf7e38dca8787ddfa39acf0f4a2b2806ed. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBCFB2200556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c864839fe8af619a0bc56829c71ecf4322ffc3c99a55e154c7b7dbd0c590d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBCFB2200873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa426508ed3f51498f596fb05dbd6ae8dc272fda4afce83386745a5eafb7d9525. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:17:49Z), 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/GBCFB2200874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81219ed05233031fa006be2d9e75825d765e5af425c17aef28140c4812bcaeb. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:11Z), 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/GBCFB2300821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc184e658de5606d1afcde437978c950d7e6fb3b59e5633ed8fe435c9cd9ab77. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/GBCFB2300822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56846b39bc6ff01fe32d963662dcbc8e021992c907f122968e1fe3329609c3a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:27:50Z), 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/GBCFB2400569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0965df386cf66a6d51e6f09e1837f4b4585c1ddd9374b3801cf1edf6212cf30d. 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/GBKQU2499106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d4e89f078f77288a9df917688a4da3b209fd6aa17d125878314a7edf03fe42. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:55:24Z), 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/GBLV62409867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d7c282dfa71a9150a9fdaf9c371e399ac4274e552de2b38db33f9fcb999c80. 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/GBKQU2499113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0965df386cf66a6d51e6f09e1837f4b4585c1ddd9374b3801cf1edf6212cf30d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:57:44Z), 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/GBKQU2499106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d4e89f078f77288a9df917688a4da3b209fd6aa17d125878314a7edf03fe42. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:43Z), 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/GBLV62409867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb540e303d5f1b525a616ac2b0893ed23975030412ea0797d890f98a056bd97fe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBKQU2499110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d7c282dfa71a9150a9fdaf9c371e399ac4274e552de2b38db33f9fcb999c80. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBKQU2499113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23d2f2c4abe18554317af72df31c40de2a479c9596ee3c10b56f8e4848d2169. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBKQU2499112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f141efb729a1ee9b2cf1c5f8beb00f76924d88d14941d82b52b5d78e84674a2. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GBKQU2584929.