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 0x09d4bf83c322b695a08de5310ce91552fdad23acbd283321a529d95a06101976. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79de28f4-87c3-4102-ae8a-8342a8e28130.json and https://artists.proofprofile.net/proofs/artist/79de28f4-87c3-4102-ae8a-8342a8e28130.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 0x517d1c6878c191581e74c5e81c62b12d29d018f91a0ff08093f3e4bc9836671e. 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/INS9W2300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c631873a8595a024708c6c407552058c01c7b66476913731b96a7a51a4c7ac. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:30Z), 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/INS7A2443875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec1e9b11868d3bf9f6ba91ca823ba889f05834581eda414ba830c62ad9e82c5. 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/DGA082349594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8736c8bbc1b49e1eab29e3e5a44e924300f687bcc39409222581b86cda43da4. 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/DGA092325568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3926197a734e4f663d56d2efa64b511dc567493740a0c479a10024f490a3ab1d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:11Z), 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/DGA092322988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40788494a23d2635d1a679c5c4a138819fa37db3629a98be7111202f2b8b7a2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DGA092334733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eee12c862abfce3b10cce3dc20633c3605d3d89c981feb01d08d015287c7ae4. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/DGA092360876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a69284285c8a19b366408814f9a2ccaa312ca95637c509d679a8b028693da2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/INS9W2300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7f25ecd7f79c724fe1b646b55f4673a3f3cabc8ea17bebcad318ca5d1cadca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA0H2374706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1236a2333ec6feead56dc8a1e5b652cc149940c1f05f952e78386bc7b00deb. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR10S2435044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66883df225bd9c4f95e48e8e1f80000cb5649aebb5f0b6b2d948b08c97214d1b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:40:20Z), 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/FRX282487695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8c90e52449c46688e55361fdd5f27e56dde162072a0ff1179c39fd3d59642a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA052444527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf77ced3194283c8dbae3e31d66e1aecdf6248158164a0505e4c97c94074080. 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/DGA082464585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ae28f496c1ae34c053a017cab05ce7a8ca674a53cbf21dfd6e6e06c754acbc. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:49Z), 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/DGA092427985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9385b6366fe78e4fc5a98bdbbb427d29ea6e9bfaf7b5627954a7e21c0294b25. 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/DGA0R2438025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2135aa2a5f1a60705e8d20f0b842c520ebb1871f587b9012dee1d9538a4677f8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA0R2438024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f1b7cf893f96ca5a385ca5c0b599865f64843f4e52b9dc31f00cb58da5320b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR59R2550995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bfc795ba7c4d15eacf36420fd15546e91047a10b064a6b4903804a87332b60. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:03:42Z), 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/NLHR52234071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b14c1c5ff92d2f702888b74fb56a4d92373970068dbacbf3b018b802b99d22. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NLHR52268254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87381b9295c910f18dccb8087454d34cc9e2197e7b2ca9db19b8ef07478923d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:06:36Z), 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/NLHR52248461.