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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 0x91775c11795440f3d21a6efc217848a1231230d3b383c06212ca3e6b418de817. 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/73ec581e-f078-44df-b572-5eef7003366a.json and https://artists.proofprofile.net/proofs/artist/73ec581e-f078-44df-b572-5eef7003366a.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 0xdc0109b61eb54e0ad7e198081b142000124c348fa1e0c52713830708ccd4c1a5. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:48:20Z), 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/EEFC10909001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e807ff4924ca7eef5fcb8ec4045c0571607b19260f33ad9dbf6d50a95385d. 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/EEFC10909011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2fc48268b7a1d26b10c7b9d53fc3a2d3b5841868650cdb605152a3afac8d82. 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/EEFC10909012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcd3ff5f1b2d6f2bbc82428e852523401b2ab5ea5dfa60302cd1048887d60cb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/EEMB11300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdc390ebb173876af74ff0b852f1c7821c7986ae54f2704adc523fc277e9cb7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:59:20Z), 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/EEMB11300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b6deadf53d0751e66c647f3ab91fdcd70a3b2f61543e4eb9484320669ac80b. 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/FIBAR1800138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67aea0a8130b3f6ab46a72470a08865756021683b8cb8214f1fa0b08a5f5eb2. 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/EELC11830901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2146bd79caeeee22320d5dfa1160aa55063ef7a1a3220fed62c1b319f971c03b. 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/EELC11813111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe902a7e5d39cdda3777c840204c042506027a64a112eab570669630c88501c4d. 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/EELC11813112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67aea0a8130b3f6ab46a72470a08865756021683b8cb8214f1fa0b08a5f5eb2. 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/EELC11830901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee65046f46f68761a68f492dd07b3be7b96fe29260825280693d12f3e6bb80d. 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/EELC11813113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b6deadf53d0751e66c647f3ab91fdcd70a3b2f61543e4eb9484320669ac80b. 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/FIBAR1800138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a27f97e5b9d6a2082b182c3e205374801b6523efae15f0f2a85b193bf914abe. 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/EELC12209504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537bbd16ae48c4f639bdca14fc39adfb6e936f052e4b072de62fdad6ca53d016. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/EELC12209501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5c70d01bc075435553f1a14acadae1730ad2748fbbafc642c1be5600ddc5f3. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/EELC12209503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66213eb9fd218ecec29ad930738694d85d617b408fcb1ac40b8590cd297232f6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/EELC12323501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ec30cd5284261707b2748bd706963d4e1c17b9c60a35fba07de2e04140bea9. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/EELC12414021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa227c44549ae50f268d1838d8863e866d708bf1565db9ad263ae6b5db1685971. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/EEBF62400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776af4086f98d44a388840cc64ed7a74e09a937f6433a3d76dc1e3651d85359b. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:22:29Z), 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/EEBF52400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf813ad71ae082b12bab5fef1bf2e1c654cb265a8ce1c3a8f6ad2720581f10ec. 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/EEMN12100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaee4bbf33250983cf7a60eadac31309911b7598fa26e0ee25975c931164db4. 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/EEYK12000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c40f87cfefffdf1e614f297ddb73261d2a18912c2f29fb121de21daf66dd2d. 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/DEQ092400044.