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 0x117176f58def8de79be7cb9b868f6c8b92cf66a08c16af954fbd956bf49814e3. 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/f9218b57-bea5-4d06-9c8c-dccdd77e90fe.json and https://artists.proofprofile.net/proofs/artist/f9218b57-bea5-4d06-9c8c-dccdd77e90fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It's Gonna Be a Cold, Cold Christmas (Top of the Pops 1975)
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 0x146f02e6858ebdd79e880cd2cbadb34ee0d5da351eadf4cf0e01d6d9237c9f7c. 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/USCGJ1567043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed96bcb4f7c39b96d535698334f6704ac560374dc8cb1932f030b4afea3fe689. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USCGJ1567044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5098fba10237c0235def1ff8d5e2bf6a2c1126a8be314d151955eeb440ca0c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:49:22Z), 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/USCGJ1567045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d7c93a166bfb5513cadfa98c2c6626554f03ce1f93135475e7a9358c1cb76a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USCGJ1567048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519d13139661ff5dcbc9118a24a91153ef81e8dfe4e75d2b9be82fb9d1b92c5b. 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/USCGJ1567050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920fdc9b18f947525a2355e2ef040d9353fac8c34c894fdcaf38e4f112841da4. 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/USHM22058933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c1532e70238dd5d6b382a59d10e2fe09688810016cc8b81973ed2f295bbd1a. 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/USCGJ1413097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c77a83c64c377caa1152ec91e0065303e678fc341a68c29c503fa936f52dd4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCGJ1413101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd57066d9a0673b1a9050ef672be8de29b93d48fa869931d502918df14a1fd7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ1108500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c27ee38c2e4624b970c4acf2402d2bf71b33fbcdf65c843fabd9cb772a5bb4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USCGJ2108162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db48a5ab1a10dc8b5dc6ee31e0ef812f888062306a44425ebcc8772f6c38dc4. 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/USCGH1615056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810f273f39c290218b8420fe73a049e7f6762f7f6ede84a923ae22885ebb983f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USCGH1615057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca73a8df3612efc013b2bc8ae88b5436987f562fe758d7e3d78e07e61bce224. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLE802100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604b945473c5a7db9adea1d01da7b8cccac94293d553b80d175ed04aff97f754. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLE802100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110f535ff1b4202763940f2321097eecef365d3704adccdd7ebdd19c570cb882. 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/GBBBM7500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddf39a626c131421e0f11b8c5779053f49b9f382f0db90af19bfa6ea87fca7e. 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/GBBBM7600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110f535ff1b4202763940f2321097eecef365d3704adccdd7ebdd19c570cb882. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBBM7500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a135df979647ce8b52efa9bc37efd3737a4ec98e782a509faff3af63fb7bb40. 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/GBF077020520.
Frantic Residents 07: Mixed by Proteus & Cally Gage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0efa64a081fe171832cb58ad461f35b0a3788c3be5f22d11d090d3bdf4b0dc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLG420400276.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch