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 0xb445b2c56f5597a13fe88e17f2394fa92f8b839fa17f6a7e4024f02de5548e57. 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/af91389a-feb2-4dc6-8984-68ce7b02b8a6.json and https://artists.proofprofile.net/proofs/artist/af91389a-feb2-4dc6-8984-68ce7b02b8a6.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 0x09292e2f2c6ab2dbdd353bb06398ce9345e780c3035b2d51f29fb09ef2f5525e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRR642000884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1195969652ee288ea68a085e2241a25e056a37851e9f331fede88d87d0d88f2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH6542012054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57bf1ace52bda339d8a05f36187eace8d2537b724a56c23f0b73cf706491728. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRR642000943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bac42d941cc703db0f85f99650971bc7db9b3d87a2487d19a36481f853f163. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRR642400674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4533c2946dce20f75a10838331121fee78932807da946e95bce3068129ead2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRR642401196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468e3abb8f6c444b7c8c12dc9488e3666f1a807ca0b14536e581e8c9b188e354. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRR642401363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ec042cbd05ee4196eb46263522379f84a641b556121bfcd1b7a628b24b835. 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/FRR642401365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b69587d388f855a8c41c87228ecefddc3041553cc25def4aefb1beac142f3ad. 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/FRR642400954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81a7589d78372fd43e6b5092e0f9282f1e219790731268d2a9bc499f839fafb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL1AP2019219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6797eb635d58e87ce3fcafe0bf7de1a956654151a720b4e6f64b77dfbcb79ddc. 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/FRR642000790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf91b065c70c194397a7dce7c5c5192f604c04b682dc68e36899ea4b714f9ebc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRR642100391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf823a1d9eb4c8cca2966ddf8a11c8895fd19f1d2439a2bfef36e4039173936d1. 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/FRR642100396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1e20a17f896d35a6bd98490ac5ac865339d0e3090d29df79564525b55d7955. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRR642100397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4533c2946dce20f75a10838331121fee78932807da946e95bce3068129ead2b. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FRR642401196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b69587d388f855a8c41c87228ecefddc3041553cc25def4aefb1beac142f3ad. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRR642400954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bac42d941cc703db0f85f99650971bc7db9b3d87a2487d19a36481f853f163. 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/FRR642400674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e613203ebfd9df68d88dc8be7844d7034a59d8434495c33c6b6a0fc8a1f45a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRR642400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c74113f54ebce628fa5d2cd98828e842183dd66d5425e7d39a34ddfe32310d9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRR642201295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab428fab0c44615bc6e9dfc3754f134a25ccacddcd1e51744a7c9bd49dfbe3e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRR642201296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ea870f5a96772ec73025aad0cda9cfe169b926bbb493bc3848943ab123bd4a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRR642201297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6797eb635d58e87ce3fcafe0bf7de1a956654151a720b4e6f64b77dfbcb79ddc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRR642000790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ab287f5dbab549ef5ad29f03ae1664b79f0f3d88c65a2e80e02880675713d1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL1AP2019220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4ecc260d4f2cbe17ea39e918afbdd90e2341be6fcb4840eaba50d466f27956. 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/NL1AP2019223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e613203ebfd9df68d88dc8be7844d7034a59d8434495c33c6b6a0fc8a1f45a. 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/FRR642400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042ab31c60ed325e14e2cef1ba77fe774120530ad2108ca15396f54435d87a68. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRR642400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd84002442d2a366ff2ac897202b3190b4561899a62c20eb5f33e861b99eb6b3. 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/FRR642400602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6c3bd51dd55cabe297ee4856dd51763b32ca5cb2f2bdf44567c87f7eb17e8e. 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/FRR642400603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa7750772a741aca1a0d251c3633bb66e88bef19b259c151f135923fb14172b. 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/FRR642400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e192241a09f9e7d4d6339f748d59f45c4212e3f013054f3ff5896bff6383d90. 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/FRR642400605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f041752d59abd7220fbefbff8947b7624124b563345b608b1503387026b407. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRR642401382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e613203ebfd9df68d88dc8be7844d7034a59d8434495c33c6b6a0fc8a1f45a. 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/FRR642400416.