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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64c19e30d5bd40473e3b3c28795e1b10c4cc48f9c18dd01d5887ec63ff5899c. 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/78095a47-1937-408e-9b6e-7032d294d219.json and https://artists.proofprofile.net/proofs/artist/78095a47-1937-408e-9b6e-7032d294d219.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15adc4e9f2234665c2b50da07ab2d566be40db53d7526fe19dd2e81eafaf7fbd. 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/QZDA62048961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde19e8b1a67f2163f66656b1058a6bef501961c94e1eb49156312a0da60558. 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/QZDA62048962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f55845f62b83db9f84f1739519334ae077cfbc1e12a94c4f0f445bfacddf06a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZDA62048963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7423bf8054e4b2280976cff88c3563dc3cd7a5425ce1d9b3d9022ec097b3a38. 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/QZDA62048964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d08527b36efa8a42b2ff6ed71c7d0f95ec83dfde6ed014b6faba672e44b0844. 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/QZDA62048965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14952970ba5a22545f49fa662f4ce99e3a719763a1746face2ffd688fe959c70. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA62048966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1aede4d8897e07cf5c037617a4bf525dfd2bcd14a50b8c612fa1f0d66fbfe0. 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/QZDA62048967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e767d3cdfa977ca95b0f0e2ee3066bce8e8337355104a370f9220be8a394e3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDA62048968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c10697d5931d23cf19e4ca9d25be99885d5ecf5cf58e6f831ecdf2a91d3ecb7. 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/QZDA62048969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014097a7da1f6df6acb59cfc99db64bcab8b175cf982abd966e789a6af93378c. 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/QZFZ62165910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d9ecb82be0f34cbf5a6d7016577981a901e704525830432df0fe3d6972393c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEN2145233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba3cbeb95d0e304ecb8469ae13e2ba667859215d946db11342cc6d82f456afd. 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/QZES52280080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf86d7ec991295f9d474292bad82be4f05ec1ff6fc5e625ddcd3a2cad0b91ca0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES52280090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5982f7e9f531382d6264b03eb19c8a2b7b23e928cccd50fb70f1eeaf3d61c75. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZGWW2135095.
If You Don't Laugh At My Jokes I Will Literally Kill You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2a4f1767bd209ed1de9ca34d66203ada8346f333bc109e40e63a2e8835653d. 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/QZGWW2135108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378c15b464699192bdbc08f1835fc2a9e24cae4753a38b330288ca56fd944fcf. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZGWW2135117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31787da04758166e0529092f8ae68959e8e145f5b79f1dbdb8604fae959b199d. 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/QZGWW2098959.