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 0xb4aec48380c0d7008db61238cf3edfc00f941646d6c081aaf330ee94d320314d. 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/c0485223-68d2-4b22-99fb-3bbccdb6cdfa.json and https://artists.proofprofile.net/proofs/artist/c0485223-68d2-4b22-99fb-3bbccdb6cdfa.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 0xc30d78f68b89fdaba9a6c6ae968c3a00b26e334e2591fc87d42fb22a1a179f31. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:46:08Z), 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/GBKPL2030469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849e31fb6e2891364da4f900c59b85bb181e4f5c573126de24db29125b607d07. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBKPL2020956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5026b6435649fff0cb8aa249e146431859eb80bb722447e2357d250c182045. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBLFP1966197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27f2b869f4bd957838b7d7b624b0de0d868a83c20fbfbfabbe2d1addf4e8b0d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKPL2140828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892f074cae56113b52f76746d59f4fb0abcf76de2c6f106d5f6d6da39ba4e9ee. 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/GBKPL2145377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ed1bd09f3d2022ea2813af5f8f3355113382a657e2210dce4a0ccb5abc9663. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBSXS2200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c74f097f8b06a45ebde0918edc49f55130c61ab87f00ae0bdfb8ed8288bb340. 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/GBSXS2200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bc15f71a634571761d4686d3f3abfecd5be2b4d7802a52ac0733b015c23e72. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBSXS2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219e3072e0b52d10286e1a97e2ebf41ec31ac994543211c68bbf1d66796aa7b9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:44:57Z), 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/GBSXS2200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ed1bd09f3d2022ea2813af5f8f3355113382a657e2210dce4a0ccb5abc9663. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:48:00Z), 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/GBSXS2200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b3dfc9593dfd1420772308816fdfda39d408befe68fab779c63495770d3dea. 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/GBSXS2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984a597c4245d38c648575a04ca8dc2d1b24b5793167b223119ba1633b256684. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBSXS2200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9282a3ea18ef56d9ca2d943ce4ba20b6a6058c7bb2ff9a7ac81b18f9fe1495. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:31:42Z), 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/GBSXS2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966c45d24d89270dcb7796a9e3b112e0dc9b63ed04cd09ca983c30aa4addc65e. 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/GBSXS2300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6768dc3206267a63b32254c4e3e90d7605cc34c7a49a347b3f2d7b55b7211805. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBSXS2300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a764c05bb5702efe2b3616c8ddd006ecfd2b330b1d9612bad8597d91441c553. 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/GBSXS2300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0d269c1f7b90342267009eadda6418b0c5b0e09f4afb3d8538459415a27d85. 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/GBSXS2300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36e68348e9d16132890208e705610308714410eb064265ee581a8ca39a62bdc. 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/GBSXS2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea193ad7d77d216bbe54d1b7f5f23525f192dbc35ab8c8ff7f89b931a41b6fd. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GBSXS2300334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0583c0238d103baffc62e254496f5262feec68e9c951c9cc3df9327a6918992. 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/GBSXS2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a764c05bb5702efe2b3616c8ddd006ecfd2b330b1d9612bad8597d91441c553. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBSXS2300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2081a04c1dc171d10399823a1df3d70fcb2113c1cc618a40bd88379be2b0be5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBSXS2400024.