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 0x53cb1a9eca9c137e7435fa1e6679e4c033ae1a52a725eea1bd636f7de852267b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/197790ec-c0c0-4f6f-9cef-bf87c1a9a4fa.json and https://artists.proofprofile.net/proofs/artist/197790ec-c0c0-4f6f-9cef-bf87c1a9a4fa.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 0x58876c9c496229527795c4f8aaa9c8a847d76352401d140d2d2ddcf03618926b. 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/NOWAT1301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e46256e337f9e6de9b590612e4351319e09bab847711e4eea2495451603ca9e. 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/NOWAT1301022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a6768aa0123731becdfbbdfba195d22364fefae8d6f696c6bf98b5d52d5ece. 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/NOWAT1301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb9adcd9b3700a6b266abb817a0f819ff3eeb31db96390ca94c25e8737d8a93. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NOWAT1301070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea8c4739c940f728ddb43bc75273b3bc229e8549653d6906a5c42fafa5fb523. 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/NOWAT1301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b4bb7b0fc527bb4eeb891912b066aa9864429a800d1e8caa9364bf0ac8ac24. 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/NOWAT1301110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f5b25783034d082f6abe9ce9de5967b801d0f377b4ed0b587ebd89b035ad30. 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/NOWAT1301012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4273aea7ebe8dd6f151d05b81d3cd1932280ecee25c6327700d43d7c10ea40cc. 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/NOWAT1401070.
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Løvehjerter blant slangene i en tigerstad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4f5bc3ffef866d1351c07c7fd4e27acd5395a1cb6da9fc7a09a80e83105c5f. 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/NOUM71700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c35a93622178a8b0efc2babc6f55bc0857c9b68c02e7ca2d81f6a986409aca2. 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/QMFME2017238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387b1e2d0f7c20f4f91c75f440a176e61c303966427769db9b3be881df570d9b. 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/NOWAT2206010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070364f3f422eacc13fdf0fec48518ad093a40f43431004b102910d6a252bb1. 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/NOWAT2206040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070364f3f422eacc13fdf0fec48518ad093a40f43431004b102910d6a252bb1. 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/NOWAT2206040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7c9bf03d87833d9d27591695a5181fb0666b3eb180ac272c639b2f44805d04. 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/NONFM1602203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d2a1ce2a16f9e5906cda256c1e3943c3478cc265ea20a669363851c1ff275f. 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/NOWAT2305070.