1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf7ca7d34ef5b55ccfb1ff8f898aab3d87d5f6eb1e2317e7b36a9098890dfddb0. 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/d7959644-1c6d-4c14-a95b-9b6928ec47e5.json and https://artists.proofprofile.net/proofs/artist/d7959644-1c6d-4c14-a95b-9b6928ec47e5.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 → block OTSBitcoinBlock must exist at that height 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 0x02516e8c5969f6d6ae61c1552ae3ad28d37ded308479fb4369aeac7e196b4d6e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US25T0892669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb584a3df721f9621a8d0fb999b5cdea9c13a77965ca5b3ac3e78a9a6558b7b04. 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/US25T0892678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953673b83c04a0e3bf24a0a5217fc05c82c49a0c855312496f1e028d97caa16f. 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/US25T0892679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c21eb9e97d8039b18893f7d2f4b7aa80b630d5b2ca5b25861e76765dbdf1f4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAAR1065950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe880bf93902032daa4f203c178adeabc3ff939c57e775ba904c980d746ed6ec3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAAR1065961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d1189ec66895c7827351092e4217542dde35b3a52fb6c3da0baa477ee9c572. 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/QM7281593243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc033495784abd179e1d09a1c0c8f62d6dfd0e5525d1c1d66475212e917f91f. 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/QM7281593244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459cdc9a159b9f26098b28cce20141eccc5a0f11bc68a58d2dcc1c2a7eb86797. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM7281593245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8f8a079c9842992b8b0b5507908622467750d50d45b56746b1f1c84aace24a. 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/QM7281593248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2c334f90698e324cb7b43c2ae59fc27c4bdfad4eb0eccb0cf32e676e6e9ab0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAAR1066343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71de65632234008235ef2c0119921c91993f4615ca0e8b4f6227de96951219c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAAR1066353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078b1448cd271893ba1d7ab3db8bbad1ce9d9b729723116d6034be88a10e7734. 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/TCAAR1066357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa261b8f6b0ccae34cd0a07b5c053c98d0fa08a800c5341de022bd59ff67745a3. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:26:21Z), 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/US97F1000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76ae0ad46f49152ae095f5f16f5ca298fd580fe29cbcab487636bb66f40e2c4. 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/DEQX21300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f32b17cca2b828879187f708a14191c70b0d4018732ec5e48fb7c6e26980320. 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/DEQX21300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc136d4998a306c2489de6e4269d5b3b505a801d1a637c4af0e9f214d5d7635. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/DEQX21300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ffd775fb344d767563f6449fe86c9ceb874e9216241fccff06a316d9fa9423. 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/US97Y1700246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfecd8f230ff94270d9f65e4ca9c58af2860a9d0a35d33984c0c5c15cf83a93b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US97Y1700248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933fdf91115271eb5ffd3eb72763f7fc6ed2c1b730176840253d0caaa88a5886. 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/US97Y2100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17760d56165c6bebf6696f12f74fc666f458944a9c1f442df776a75eae14baf9. 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/US97Y2100310.