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 0xed5ff52b851890e0eaeeeb3fcfe813976a288cd716544ffddaee443320c17c96. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f48e43b3-f15f-41d3-b1b1-55df8ff2aaa4.json and https://artists.proofprofile.net/proofs/artist/f48e43b3-f15f-41d3-b1b1-55df8ff2aaa4.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 0xd59756f0e0c78ce4dd5ae61983763f00872fcb50ef1ddb93d7635131c0450e8b. 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/QZFYY2346473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dd1c06fb14ba130efe21c9030600af53f5cffb4853fbb7a8cc2a0efc337508. 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/QZFYX2056698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c8ece93f7acb1d6105ad85f34f8ffee860fc697d179865221823c9616f47cf. 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/UST8K1819275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eda5f291b00936715335d67063293cd3603129a0b89c0df7fcc4e4cbd152a2e. 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/QZES61894480.
Doma vychádza slnko / Mladí a dojatí (Kradli jsme sousedům rajčata OST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38824a400b37f0eb4ac449fcb371754f3b501c2cecd86035eb19cf1148c7d36c. 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/QZFZ72079699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eda5f291b00936715335d67063293cd3603129a0b89c0df7fcc4e4cbd152a2e. 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/QZES61894480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c8ece93f7acb1d6105ad85f34f8ffee860fc697d179865221823c9616f47cf. 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/UST8K1819275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10aa8148e091d3729f4d6220fe5bb882cab6175bae5ee83def456eb6d9ab68d1. 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/SKBZ92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ccc29ea3018509f8a32203fab157707951446d3f9c6ec7c2d1c1cfed817508. 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/SKBZ92400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db6d8208cba234ddae893c3d5c85218e7fb63a158fd4245d317fcc7a63edc40. 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/SKBZ92400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdae3aa7c6382970cbab84c22554a85b8b89be0deca460381665718ce6e356b0. 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/SKBZ92400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3246c5f0883e71f2f0692e9c14b1bbda24f29d11cac49efeb702123f0696d70e. 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/SKBZ92400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4644163c1da56f74e6e7487624bf6717ab41ec97d51b30eafc55d573b392aeef. 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/SKBZ92400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb680f33db7d984b9a9f9cd2d9f5cc8446e85d1aa997db7f80c61c7e1ef64fb. 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/SKBZ92300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c253e0c93c0d0d218a851f028621fef796bc2454f79a7609e0d63a04f7e2455. 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/SKBZ92400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdad940344f5ca29d57864eecc0df1c468bad3fc036202b85cb7632c181c136. 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/SKBZ92400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ba18e3e7a5aa69b7ed1bbe1d12e7f3c474dc74d2bad871f22071e65ebcb6e7. 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/SKBZ92400012.