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 0x11ab0a4240ee8e4e85d2614ce5ee5546c02d84b31c5558f86acb2894a039b0d1. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36dc2ee4-e7a0-40b7-91ef-cb1a7953f870.json and https://artists.proofprofile.net/proofs/artist/36dc2ee4-e7a0-40b7-91ef-cb1a7953f870.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 0xe449bcd66b8b15acb454a6cbec830e0db8e0864c63771736f2be29de71f41e7b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHZ62275394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90429906d5eb5af58a0bf0a38071d9194e66f8cfe413418b205b5977d3a226fa. 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/QZHZ62275395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5984c329d14e781de2cf17a973a5fdb3873b81a5279488540bfc0a9d3f5a72. 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/QZHZ62275396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dbf6fc554a74bf896b788a977ff375f639bcd5f229e5b5ee60b3afac393b6a. 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/QZHZ62275397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc575532e7d0be0e83ba295b0dfbe74e4766c2c592352ceb08a66446ad8e9ef4. 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/QZHZ62275398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd69574897585409edbfb8e6e6c0a70306091d4f73454ae99f60fb284bdd0f40. 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/QZHZ62275399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afaecf8d4a6c8982bc196659ec9b394cacf99c19e040dc5527dde52d0a2ff4b. 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/QZHZ62275400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3234142879b5c1e4c037f6473411b0024a07bc1cb914243b81017cc87d808609. 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/QZHZ62275401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6641533d8c849aa6752ce26b0cd2ddeb926f8e80972c6a423bcda780357f4980. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHZ62275404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc804f06e99b445f95b237a7fd4bfc015908d560f4af2070f290d1365803007. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHZ62275405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a48ec24b54fcafed12218d72e059cab498cf445dd0b1bdab084bbe6a91169b0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ62275407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d86bcc44b86ec9307ba108877436c0e78c8d6225623566f932f354e5f0e85a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ62275409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664f5a02f9e363cc928ec234aff1ee81002dcc276386c066f0eb26811eaeda31. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ62275413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b11707676b1f25205749b21102436d664ee8768667b206c0f5acafab5dd5d44. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ62275415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022744c2d41b7b22fd655679cc8ce6f79d12274c638bfbd18ae09f9465033e4b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ62275416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33950e077259ae1af709ea0a8cd4b00e93a96f2e6b7c04213f73b52dfdf6769b. 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/QZHZ62275418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e4487a358f2a6a583ea26b2845e03489d3a40de896c952ff79b0508bccf27b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ62275420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18061109249a25a210ade99a2fcbdd54ce2481d2a08b98a3410d3db06872401. 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/QZHZ62275422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe28ac810c54997d34390dc8edd56f834caaaab63551a63767ab9abfc09dfc5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ62275424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf28add452f5fecc2fd7acc950084819f9d3e1da1813238906209b2f426ae40. 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/QZHZ62275429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4216089f81ee69fd6ece5461a00a0f34ccaca444b2c8524c7a97ad45881e61. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ62275431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f5daeb238e816c06bbcecf8bae092003e87ddcf99ea947ed8c79b5ec31a5ae. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHZ62275433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf584f35614df4061d69a9a49a43bffef94f628f75964bdd20c3a918b01f30d. 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/QZHZ62275435.