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 0x4b73ee756860baa0b86fa28c81087f82c24c2527e6caadd6a5df76dea04f8f78. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9149377b-6239-4ee2-9d45-be11b67bb9fd.json and https://artists.proofprofile.net/proofs/artist/9149377b-6239-4ee2-9d45-be11b67bb9fd.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 0x687729d0447875e77e8ca1229a252d3e558c61554e87419a65a02cd9c9e2b581. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5AB2481619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83124eceacc8bcd918527e7163547d25ebd145ac5ba661bee55a5ae4fd779e0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCG62000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d0d6b32b63e558614804be19507f6513b941dc8d76c45e72d6bc4081608b30. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCG62000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18783d0c191c44d7578d63c52b9ea9b03841d84f7a9bb239896b09bcd81fd7f3. 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/USCG62000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f47cbe8aaa9c7b49a7810f17b713d84693db9c85ee41d75acf15665c5f598cb. 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/USCG62000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16623ace6d16a509e02df9d00415bfb5a7ab9090d7ac4e6ef9146b8ad72f8a86. 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/USCG62000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daeecf27ca51270c9e37d5424c78ce03549f33e278459d33bd00aad36cafc89. 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/USCG62000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039a2fc1f4d7eb61a93191b01fe0b3f288901b4b0f9a0a4970cfd67ad651335d. 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/USCG62000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36edf8e5419051fb02dd039ea54eca6f6c93e86aa14e3fcb4eefdcc313f95771. 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/USCG62000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c0460e2dffc672448aca598acdcc54af8941d754ea0a65f7950e21e72f8277. 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/USCG62000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43ab0febb2616c996879ec958e6be04f33ef857549a8812b300ee48a60f0506. 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/USCG61900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608c66e8157211d79f1c0d46390f37447b0f1b32f5b7546a18e46687e5cf8bc4. 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/QZGLS2340379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608c66e8157211d79f1c0d46390f37447b0f1b32f5b7546a18e46687e5cf8bc4. 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/QZGLS2340379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e391cf7902ff4604a1d80ace6c491116260663d5f325b74f78fa6885b43b17. 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/QZNJZ2386278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d05b297de3d6c20959975c2b37928f43977642f99e1f9760b1559756451697. 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/QZNJZ2386281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acfb6ec923da5cd7b4d75df2d64766b0aba7b1a371e18fcc7cc188ba669754e. 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/QZNJZ2385009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370db5b2116a9af86ead2cc211fe08a6619d1bdf3d541e4f18e66cc300978177. 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/QZNJZ2386282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d5bea8c2eee5c4371e2b943a082488193a78121348c705e5c6c7b39d1fe15b. 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/QZNJZ2386283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a630abcd67bed6797a0aadd0f551da7858e99bd96b3b1b377f7a4da347cdfd. 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/QZGLS2493523.