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 0x72faac83dd576fb7bc524e71d905e834bf3382ecc1607e5e340d1cdf4cd8a841. 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/bb0e7d76-52a0-44c4-8749-c9c389368d62.json and https://artists.proofprofile.net/proofs/artist/bb0e7d76-52a0-44c4-8749-c9c389368d62.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 0x424c7d8bba31701fa30fdc7e710de42480dcf2bf38c043b8bbaee4d2bd2ff2dd. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CH6542151661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe0ecf8f8a5454a8a9a394e9d6f21916a3d49a26d0a8164ecf6814881b46f49. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:55:36Z), 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/QZTAW2297692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94b392394fdf52259d5bd9af967da673ec55c57d153b3d90daafa63a5aba787. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTAW2297694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1019d65ff875f7a29f6bcd0f86b80fa2ff875755021bca87a2434da5ea7bb72. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAW2297695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e40983c51a233d3e6c49a717cb4f2334dcde09749cffb6491ef5ca221f4ba1d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAW2297699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec18c2f2e2a9c144297f73a74f5459d7431e4fbbcadd884df2548736411cedf. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFH2369145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b7a28c64dabc56f0f4ef8e2fe8509303548755be949aee5a35fbc3e98ebdb7. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:40:52Z), 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/QZWFH2369146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094d0c010b5e5a815668e3d65a16ed31677885482f14e00bf941b65bcf86329a. 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/QZWFH2369147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4bc514b920c00b564a8c6508428c492b172652f61a2c5d7af08df7f1b69dce. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFH2369148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44c067cd7987500f0cbb72fab395712e5e99026bae00af29165fe726cc6418e. 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/QZWFH2369149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3e9b005cbe5070fc985b39e8e82fed47220370eec4f9305366a604f5564366. 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/QZWFH2369154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d01862f2777c2f2a04b5ef23e2a616b7362f4b5e2ed9b83296489c01943f0b. 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/QZWFH2439530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d79b0fdb9ed4b4d71ccd3bdbc497945c7c262c701e2efdc726427648454b37. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZWFH2439532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e992ede993edee4c8829cce5718c1ad0e256c2be61a5be31139f95438f75950. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZWFH2439534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af07dcf18939907c70e4ff52782db095b52adddd9126fe1e3dd300edde63a60. 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/QZWFH2439535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33186be9a77d753da3978a17151c1e0b72212cf20619e0f8e12d9947fc3896dc. 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/QZWFH2439536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767c518cd9c0a09da894566665402cd1902f42c069009f44e557ec589b6d51fb. 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/QZWFH2439537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab70a46b6bb317e6cefcc4d8cc667e9123080f8ca895dd326a9826beb3be011. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWQ2534792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3fe96b6f188a7912ec2f863f214fe9ff6d21854f4478667a1c76d195a3fb98. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWQ2534793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0fe8736a132b0560567c5515913e8ad7043659e40e836882b1827cb189594e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:28Z), 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/QZNWQ2534794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c37f960b0e71094203b6b1555061f708fb8f2cae032ae7e49d28fa27c18f878. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWQ2534795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b286fd441a465be269be81d489362aec78f7e5e6e5ee62a5464030e3f78609. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWQ2534796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54e7c4c01736229f36b97f86a2ffc2732ed0c14a89edf0d5cc6a225eac9646e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWQ2534797.