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 0xbf802225283748f9cdb3b8f4da142c8e447b0a281bc0f3417d08f506f6f4c857. 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/d355f266-74cb-428d-bc55-8e758d2608ea.json and https://artists.proofprofile.net/proofs/artist/d355f266-74cb-428d-bc55-8e758d2608ea.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 0xad58b5676c683663deb00f925727859bcf6226054c9ab0db6791eee33a9284f8. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:23:20Z), 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/SE6N62200723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4bfd09bb5a203816dc3ef9018d66a2c303a7634f77b6149e788a892b7e367b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6N62200837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e847f70789d84eb5034ffd3ae052e1cefcf040ab4a2f7399a29bac69d19aa5e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6N62200917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe248a6758acced5e8d0dbd3e895fb1409a139fee064243f8b070a05937ce2483. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SE6N62201995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618976a18c8e7eb823a86e96ffca0f68253a18a2c83b67d90ddc1e6d9b03c1a2. 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/SEAEV1213030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b4480a26ca530e63b8912d8d1437f5c9b8c4e9d922c317afffb3d7921bc8a2. 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/SEAEV1213040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7543faf1fad1ab68ccec5f9630c2114a829b60cc49225f48d46229be0b6efff8. 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/SEYNI0901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2be3adfe4f5c27d3f9e91a97b73f3bb2508fa7d7314843ddf7afd36d86c5162. 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/SEYNI0901615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ebc6f129d9e205cb5a6e6933f9922b740b2f774ab5f4e31b22a35e564fdd2. 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/SEYNI0901601.
Jul i Folkton - I solvändets tid (Live 2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650a12dd50d9378c6838bd29d5ff99a00163a482abdc653a45357c1c44a2dd26. 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/SEYNI1100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ea393019667c42816bf9feb5087c836802e614e2fd3325c04d47ca9d51354. 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/SEYNI1100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d150e1098aa06eb7088beffce1628c322cb22e3efd365936724f1cb3b6e91cf. 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/SEYNI0901606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39af2dfabbf9670d25b52f62747d27519bea7acf4511e4872391d6436bea5050. 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/SEYNI0901609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5e0fd428d83f03bb5fb624b9125b490bfd13d4b7a08dfd07187a7e2d28e6ed. 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/SEYNI0901611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66512f79e777ec629282fea5fd655cf18a9b67ccc370aa1e60acc1c48b54133. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/SEYNI1100401.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46178cc1ce8e84655f7a4088a07aa738597fa6dc694ab896e548162067cff6e7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SEYNI0901602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d3c289552f1f4443aaf45ce5ff26e33bf5d9c835a184757ca7ebb366c9cf9c. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/SEYNI1100408.
Joseph & the Angel / 8:Th of Jan / A Punch in the Dark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c4e6a13d30cd8076808828e179ab9f84f16af6d3f80143e549b5f9d8f9cd3c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/SEYNI0901608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ba73fb2bc3cae90e5c788f25c082bd5eb49921ff8bb5965e570a3c9bbeddce. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SEYNI0901612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3232835d7882830c132ebf58c27e7e31d0b2260dfdd9ba449554d94b8f89af0f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SEYNI0901617.