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 0x4161d8278e066b170aa73594a78ae0cb5612c673e3c2aa997888931cee28389e. 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/1eada135-c407-4ca4-b745-9f6bbaca1dbe.json and https://artists.proofprofile.net/proofs/artist/1eada135-c407-4ca4-b745-9f6bbaca1dbe.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 0xd0232cce54f3b9ef836af6599ea0e585cadcad3245584f9fec5bceb6c9f94f74. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USV351464716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818021fa6d7d49535defd4f51b0b99267a679def7b18a6f2989a24c6205c1fd3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USL4Q1817334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd165a43378d160143f85d214527365aebf19ce270a26b4508972def14b5e4d0e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:58:57Z), 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/FR26V2018464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd165a43378d160143f85d214527365aebf19ce270a26b4508972def14b5e4d0e. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/FR26V2018464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a168ce21f2fc1d52a67461bd9502452ffe09f404a52b882bc8f051904a9456b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR26V2018467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc3019fdce0884fef37d465ed281c2cc8f98329ebcfd5ccf6955d99ea89471d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X42263580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0bfb35607c5e003d807a2f6cbbc77e9750732b53a4b2adccb609b242c8450d. 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/FR2X42263582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bb04d57242e002842a817866b3f2511d564658e4a90c4fb4ba1cc223b4e3df. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FR10S2294951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc3019fdce0884fef37d465ed281c2cc8f98329ebcfd5ccf6955d99ea89471d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR2X42263580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed2244c9c91ef9ebc04c21ddba9a781f984c3b2cde53b524c3cccc5c4afeda1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR2X42263581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef971f627e28558d815ff4c4ef3df16e316145a7b2f7d1e17af0595d679a5049. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X42263584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d7ef6b7984b01440b3c0c079cc59581fe49101851be6e293b0e6ca76a1b033. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR2X42263587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c116a827392ad6b8c536aa76b8508b00a4a89baf43a374ecd88c64ad48c082. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FRX282388308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f917e0bea933769b3f29c5185d5105afae0e00be4eb89024348daeff0186b45. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:22Z), 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/FRX282388309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21f104593550f06220247cadfd0cd92e77ebed033fb134c23fdcf62c84cac86. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:53Z), 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/USUYG1597968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b6c0ce64fa01e198155524e41bf3e841fbfe3690239a8f6996abde2368ff60. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USUYG1597970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96deaec77767aee033f34c2ce18b1330924c4567bd88c12dca68f173a34f7f23. 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/USUYG1597974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720e8c756cf9a551632ce801c5204a7ff4acab49e89bf8f2893650be6b012420. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USUYG1597976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd39c4b19aa69e3ac0fd8e3e202fd3ea59d048e33affa95e424df3a9eb39617. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USUYG1597977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586a2c62c5de706f0af99ffb8ce68feb58fce1fae134e51fd2c4b6669d1ebec2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USUYG1597978.