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 0x3cf01e6c03e9bb50055b0498fc09f782562f2a28c474e3007b72706a75c76bc9. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a837ccc-4249-45ab-99a1-1a74850511a9.json and https://artists.proofprofile.net/proofs/artist/3a837ccc-4249-45ab-99a1-1a74850511a9.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 0xea946598fb2b242063a2bed90e36c6b72b4b622907858311febc29a8204fa032. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFYY2427529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c35041c1a08655d17776a298a98eb6925b06007e4b963d3462cb8df098480d3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFYY2427530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e4dee7e57696dbabff3fbcba01fc7c0c4e5d151d52cd38bf1b7ddfcdf9e4d5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFYY2427531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fb53592728a87177a963dbe2addc8b5654b54505093d9708ce6cb07d7600a4. 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/QZFYY2427518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c2ac03658d57e0d60bc89b282ffba422e8865d376c413d816e50ec7865dac4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFYY2427524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7eb135ac6b0cb6ab5b9ef87b26104f94f70e60f615c0faa0146ca7f6aa1c9b. 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/QZFYY2427517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944017b15750b5ceead95a48be8ed22033b26b2fa37151bea1fe5572808effae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFYY2427520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2675e6db119ed0773ce7a336ea8122ff8d79dc6efc19bf8412308a7e88d2666c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GX3Q92408024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe225966609af790a34506fd326271aa4e43a4e1315d9d0c9b9b80c4e6b6cc4b6. 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/GX3Q92408025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b88ca713371ceea916ce3275964017258b6110dfe7f15c3db299c052cb60fd2. 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/QZFYY2427523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e5540c2fc584d7615ad80fb62b43426ef7cbd9d8f4756efbacfcf948bf93ec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFYY2427525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642e2ca28e96508f0e4ab53734d2f1ecda6758111c55a6b3a34caf4754d2245e. 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/QZFYY2427519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e9eabac8264cdf33d939ec1b9dab8e347dfe769d160d0012e97541ebda6ed2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:11:05Z), 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/QZFYY2427522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9218192e295568dd5aea69b48bfa64b64cffd1ff8361440aa9536350710c8727. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFYY2427527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084c587211e7c0ae91badfce05e25760db17c0f07ddc35adeda7829d2461b863. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:15:38Z), 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/GX3Q92425276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ac1fcbadc3828a0c26b8c4fd81b88382200c9b62850a9bacc675e61aefc181. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GX3Q92425277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8520b780f6e765a2853d9f59873ea364fe8fb1bf9736ed7500a45ae66ce0eeb. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GX3Q92425278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5219a510ea274cd30e1c9c52408eb462f3dac219b429011f9f2521377a87dc3c. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GX3Q92425279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d246f7960839671f41f0c1ed6301f5f16242fb19833f514a02b120596fdc6b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GX3Q92425280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd422213506643534464f0223a547f6677459e395611ceccb01e7c5ddf3c34a37. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:03:34Z), 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/GX3Q92425281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016c57823407cff403bb07f2da5b8d99cd6d82e36fdef2a23e7f68687e0c2995. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX3Q92425282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81275edcde2fc0112e7365b0d368929707810d755079a105419a6b2373177de7. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GX3Q92425283.