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 0xc72e961274892ca6d0e74986ba2ddc7c308fcab2ba7746b8090a40fd295812cc. 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/77235eb3-d565-4940-8a13-462e16c2cdb3.json and https://artists.proofprofile.net/proofs/artist/77235eb3-d565-4940-8a13-462e16c2cdb3.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 0x50cd5906f65e478b2c1def6210d838ae32b6dc27f25e60a34aa60f5c35593fc4. 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/BEB682300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a32e3a9db96dc03a97866a6015a4639a285db0906f6fc7a4834ef89b71e5ea. 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/NLE802200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef82e568b5c9c606c9cdfe48c930ba22f9fbd7b8a71bbfc2e6298c6ef0c5ac0. 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/BEB682100550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fb76c12d8c2c53efb1ef4969e0f9ebb7f44580ac4b57371f8d284e245e30fa. 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/NLE801900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd8122ecf9ad090c7c2db5cfdd7c29216275461889a475c19ff2b47b30b788a. 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/NLE802000673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cd5906f65e478b2c1def6210d838ae32b6dc27f25e60a34aa60f5c35593fc4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEB682300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fb76c12d8c2c53efb1ef4969e0f9ebb7f44580ac4b57371f8d284e245e30fa. 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/NLE801900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6f36d49371e81d43fe573b4ffbc8d43a66112a71649fa5c2bc51bcb980b681. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLE801900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b5301127bd2018791c72963240268046a967dae2a49d76ed756b74e065c21b. 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/NLE802200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c55b7f935d16271613a8e74bf6761d9442ef63ddc8ab9774c01227496d480a8. 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/NLE802400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a32e3a9db96dc03a97866a6015a4639a285db0906f6fc7a4834ef89b71e5ea. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLE802200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c55b7f935d16271613a8e74bf6761d9442ef63ddc8ab9774c01227496d480a8. 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/NLE802400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c55b7f935d16271613a8e74bf6761d9442ef63ddc8ab9774c01227496d480a8. 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/NLE802400227.
Our Last Resort - The Qontinent 2015 Anthem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800995dc80834da4c68b6f38b80b882ec52624eb72236b8e766e127ab0c64119. 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/NLH2L1500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fb76c12d8c2c53efb1ef4969e0f9ebb7f44580ac4b57371f8d284e245e30fa. 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/NLE801900144.