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 0x0ed5bd87bc6fbc4d5c468423955e7a845d6457d21326a66f984df70443ea4b08. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88afe8ea-d316-4dc9-9867-dde398db07de.json and https://artists.proofprofile.net/proofs/artist/88afe8ea-d316-4dc9-9867-dde398db07de.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 0x1c86b961d53d419059b022f6c041afa05b7b7981dc986b23cda395d39c2ee22a. 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/DEHC20985614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcf98617fec2aafd6a5191701afeaa09c51ffc6eb06b29648cbe166f3de372a. 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/DEHC20985615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8621a9012fbb798bbcb2c0c774ca8104829b37b7e1d5e6b299b3722ef94abaaa. 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/DEHC20985616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4c379adbcacd332cc6a7af5e08a6c05f18302a42e041467b658f7c9d56765c. 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/DEHC20985617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2d58079602bb7cabb912091831b3e30358bbf35fe34f25f0032b31e5ea8917. 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/DEHC20985618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad97cecf1625fe1815187d311fedb5ac7501a7bc7cdc6370e6e20e250f54ed8. 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/DEHC20985619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3ed258a6855150d76858d5c5dad264c79ec5dd0440044a8b139df5c2dd785e. 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/DEHC20985620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2318385e3c5b7f3f59b07af849571ef2d9eb255ade2f74f5a4271bac27abcf. 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/DEHC20985621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8777cc6b7bd8db8e2762ae2ac707a82b2a476b1d4a6d6f09acdc867327cb75. 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/DEHC20985622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5450e521c4040bba16d4aacedf1b8f83bcacd3671c8749cd52f35062af7b051d. 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/DEHC20985623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d3ed5b4bd478a46d015b4b8b5af731ccf7f26e4c75484baadf0465ba5a4052. 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/DEHC20985624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7303f0c021d45d71ed5970394fb031c42772f9c279bd963825a2fac2177058. 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/DEHC20985625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a169472f6c3d4e292ecd38522b66c9be2c730ddd8bc4490a83a5033fe0fae4b. 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/DEHC20985626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52801a8f5f6ae2a210ebdc93b81da648dd60aa4c73a23f6a76e8aa0379c87b57. 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/DEHC20985627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecf189d02f1d8a4ddd4fe71fa89ba729940c45e02a4d6e9e6c26913c436d025. 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/DEHC20985628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8609e4acf27f3140790038fd111bc94661df99988e05be64141160994c60ec7e. 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/DEHC20985629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97b908fda0f0a0b0399a867d4f760a18a1893a9fd429d35c287220b557cdeb3. 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/DEHC20985630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d9a53f1bd82c8479fb9d51be462b37dda58f153f284d9cd8bb8ccdd1cad7d9. 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/DEHC20985631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7f0431002a1158e7da039a091388b78000bd95919350c1993e35157cc01bab. 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/DEHC20985632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a294565462be9dfc349660672d859e82b06303b96af66dff8080904595ad3d2. 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/DEHC20985633.