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 0x2aa760139b04acc80b02ab16c6d94ec3ee119bc3c3e6cfcb9e8041e247a14b92. 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/c7f1b78c-6ae4-4ebe-a10d-5c8d73e80858.json and https://artists.proofprofile.net/proofs/artist/c7f1b78c-6ae4-4ebe-a10d-5c8d73e80858.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don't wanna go Back home - DJ Mixed Version
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 0x8a486713dc4cbdf1475acca6d2d88df2a3cd34fc1d7a6391f0a138d838a5d165. 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/JPM591001664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880bd3a3085cde7d731298d1af885cde0d6ecad272be88670549c37d6a7823c3. 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/JPM591001667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27abe637b05ba697989f1a8bfddfbd23ab9dd41a723ab6ad04ea2183c6bd3ffb. 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/JPM591001671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5163aac64d8f922278cc7a2f8a831be33cb46cc9046f5af3c8dc02f78c46bbfe. 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/JPM591001674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e248ebabd1b3f35cb8ab24e6a28923aaeb8e5ad78652aa026d2132ead08161. 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/JPM591001677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c2d77b26ab453e509ac377040a46cdbca9c18bc7cc9d54e1b629fae2d4a7b8. 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/JPM591001680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7312635bb82234eaf225b24202c0c909c448e095d4672353bb0a243c5f0212c4. 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/JPM591001684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0fdb643bdcffb7723cac6973552cb693715707aa68ad8dd0f1a30c645561d2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPM591001678.
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 0xadf8369399a9b40982a765d8bb33aeb0396b451800adb460f287ad030d817a85. 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/TCJPB2441511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44901b0b395b3cf02b6ce29fdb710817a577b79f08c537d95011f46341c87973. 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/TCJPZ2470443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89777679a5437d3b804cb68d4fea50a4ad61d50d6335c459632c46a96d92b650. 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/TCJPY2491378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dce7d6d445e3fcc3ae17bcf7d211d4fcaf60c6d3b1aae338071cc7e7dbae75. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TCJPY2491372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e94d95d934e6d5e584092a4ae62c842f2fa09c0fd1ea5e5eb2c72c447abf26f. 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/TCJPW2395685.
Real Friends (feat. Masato Hayashi, LUNV LOYAL & dubby bunny)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec2622cb74524eba0b0318cce2a5882891d7de66d3b82e447bd662b9267e1c. 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/TCJPA2401887.
Be Okay (Chi, Chi) [feat. Kohjiya & YungFLX]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dcbd4162b09aa20cb91ac7ba47862f6c2895ec1b40b55c413b30feefa65fa2. 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/TCJPZ2484743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1f4b5c1556336d2cd0831e5a1f4a0f69bf153eff2a7877f3c4c0e269a2cf0. 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/TCJPA2401916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff8945ca6858a210d46b27f78cda3ab7bb46338d1cc12965d021ed542b1a863. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCJPP2131484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57060d08c1bf89c6369daaa21bd43785fa05dc5d79f02049dcf6a02bc6d23753. 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/TCJPU2370893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5eaae02a791be6b92e590ce0bfac3162a44fd930b56d981522a1f6f5eff7aa. 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/TCJPO2165050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639087606bee07d7176fa65cfc37f15daaf1e2fe5e5b8fa7b2ed6092eabb43f0. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/TCJPV2396512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6476af83054a9c6fc703481bb39a9fa46dcf4130668dc5e8a825c286cf54f3. 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/TCJPX2395345.