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 0x3e285ec2f18cfe725a52bb98b789452e73aadb02d913ef9f463b78399e8690bd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c704213-dac5-44d1-b116-8c79fc46aeb3.json and https://artists.proofprofile.net/proofs/artist/0c704213-dac5-44d1-b116-8c79fc46aeb3.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 0x30e82151981d04f6a0a1f6d78d638615d319f28878758535cf856394655b6d75. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US4R30747248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593e6cb39d8df96fd8c3be2ecf1d9438e5aecb962f0e69cc9b521df9245bc6eb. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US4R30747251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c2917862ecacd5463c168a0354d8348495b721f5a09674cb1c0072d7e6db82. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US4R30747252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b306396d20333d6d448f74b65c1889e3770018b66290ac8a054954b7d64a0a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:37Z), 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/US4R30747254.
Layaly / Khamrat El Hob / Taht Hodajha (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02bf5c1f65223534e2f93c392f19ea25af7001ab426341f2747d007e2551903. 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/DGA0Q2395325.
Mawal Kalat 3anna Kasrana 3ali Lbena (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5af1226aa37b5471a868f1a49eb977a3dfedbd3c5af7192bb3f47e63f7192a. 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/US4R31139476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f8dcf510b7867c3596381e86fb74efccc4af2d8856a5c87822839987383398. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/US4R31139477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1cfd3a4e6c101f28daadbcaa23d20ddbc54f68fe511288bebd8ddf88055bf2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US4R31139478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abbdb672b0002954bdba889235a0dd376c24b80c9de6a47b42b28f1b98d61fe. 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/US4R31139479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da7d2791d45afbda0319163e23567ebeb64eb44dec4ce67410fa19f77d56fbc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US4R31139481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73e0653cabb4ab439a6ecab5344079876062e4fdd3c5a6e1d42862d3b17a5be. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/US4R31139482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c8582f2572dd1c2e6c3aebaf5fe213e2adf7633f00452999d9574c2e8946b2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US4R31139484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf64474cc84663f06f061cc852508dcdd7e8e7afc77349991580faf00da632de. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/US4R31139486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24076d067f613dbca97feedfa3e67d0b08661a4a8c2c7b40c1b255ad72637d06. 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/US4R31139488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d98f2c08e88d5ed9d7d523a62a0b2d2d382498ee0e53f13264bee97eb494232. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:14:09Z), 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/US4R31139489.