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 0x1770df7c819547330e3a8e6a3fe6f93d5e465ecf274800f56cec0eb02d330148. 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/b0eca7af-e916-467b-8d28-0b189229de86.json and https://artists.proofprofile.net/proofs/artist/b0eca7af-e916-467b-8d28-0b189229de86.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 0x3ae4b47d669a606f7f0c0013e2303fb5f753e906618abad7483c762ef8bb169e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:06:06Z), 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/GBHLW2401638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb001440fd6eafb2463cd266e99d92cf360afffdb20e325e298aa5a8955a3ad11. 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/GBHLW2401639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f97da828c37359d0404a1a4cf988eca80b078e7ce0eeb2684f63bce20c8b7be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFME2161990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d35f51010db0ba822229ba0b937bccb0f483b6cfcf4c7760534a1079cf44543. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFME2161991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55b8f7bf890849a3c4622894fa8335f257534037dbdbee15636e369e98f37df. 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/QMFME2161992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4286d5b61b487df595be430f6ebd0f41a8a87964b5cbd733f1fa416073a1c759. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMFME2161993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e80e3b0e2e179964543b7927cefd932cc6f3b3fb41a0dc85f23188c5eade0fa. 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/GBXCJ1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c566387e3be121b149bbb3d803d4978b2bb3a4e74b5de1aa4b497a9ee27ebf3. 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/FR9W12238538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae4b47d669a606f7f0c0013e2303fb5f753e906618abad7483c762ef8bb169e. 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/GBHLW2401638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb001440fd6eafb2463cd266e99d92cf360afffdb20e325e298aa5a8955a3ad11. 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/GBHLW2401639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e6b48d5a5436d42898375a807ee16fb1706d50fdbebb1e40048590160a140a. 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/GBHLW2401640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664b05bb6c433dfeb019979e353c3fb316fa126c307552da9c25eb73c1d61379. 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/GBHLW2401641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea64c64e2ca6e1a08a35080de51183f00775c8d7f8c9dae84fb672f85343c4. 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/GBHLW2401642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a00b8bc372332f39bc539c8e03853b21866c5aa566e2fc8daddc4696061955. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBHLW2401643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2230dad213cd52f12cdd47b88b74078e2a3da23f30779eff564b3757c969ca98. 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/GBHLW2401644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d84776aa109b975408ed651d3073bb5495899d9d8959fc65c7aea0907395d3. 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/GBHLW2401645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5e5987414f6a4ccb857daa68e6e5e6c995da014e329b7b93d92cbaf54f0e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBHLW2401646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419703df2a0d717441f3a6767bae623f7f391af1865b5bf1abafeb908d59250. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBHLW2401647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2230dad213cd52f12cdd47b88b74078e2a3da23f30779eff564b3757c969ca98. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBHLW2401644.