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 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 0x5253840e2755f21f18a23448a14958dcb696258bf653c66554d4a3e081f4fb24. 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/70e22f9f-fe12-4fe1-9f01-c51f99687342.json and https://artists.proofprofile.net/proofs/artist/70e22f9f-fe12-4fe1-9f01-c51f99687342.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 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 0xf85a472363c3435fba9d54e98e5a4bb09d36ccc12385505119bc29f7537f6362. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR2X41886209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036f2e7a31d122c0cf041ed56817c6dc4d6df4513569f58d4d297a49264621b2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR2X41886211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e3894f0b0ef64bd0dc7363ab19f1c74475f42a6faf5f55577afc75c16f3ecb. 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/USANG1902556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb4b0c7c1977d57fafc887fa0ae530132c4b9763a0698aaa55f9d1026e6bcb0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USANG1924367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccca0c69ebc2053ecc39b83d015a2d0a002633c35dae95e4f428759af21c312. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USANG1929341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f07a62d2647a90d9addcfe681f6e069251eced5e3acb3b67abed8cbce0775c. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/US3DF2074802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450bdfcc275a310e00c9b808fc5128a64d905f3d38ecdf01ce7f29ea1f5b6059. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US3DF2074803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e30ecd7d410e25fca7f7317c11acb15c5e2b8d5e21bf01ec1e7729f848f111. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNCB2000155.
Sudah Seminggu Lebih Kamu Sering Melamun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee152aac4888b832854dcf529931e4c897aeb7c21850b015fb3c5bf56cb01d3f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US3DF2105959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69899311d0741bb393efe4acfaa8bb72d0fbcd0d5bf0546962a95883e76a0ef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF2218187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70780922249591981c7a96087d8b8aba12ba911aaf3c065e03881174ef513219. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/US3DF2218186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144090b2e2ed30a9c3d67e351631e933169803b0603d01a801d8ddbc1545ddbd. 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/US3DF2218188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742f0f7f376dbcfaf84261af09819592b02c2043e5c6c8a463efb2b21db9c71b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF2218189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cea460c23b3336c51e6de0f74be4bac042eee65472dacd44a9ad7a5101dbbd. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US3DF2218193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6116f71950e0cc08b3624fec8d4a903a0b0e0f332cd04f28f3bc8eddc2f7ddfb. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/FRX872534380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d6ff59bcb770e165394b14a3509757415c886d8f5b92f8818516817aaed12. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX872534381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5350f3ac1e36560737a3ee0ac0611eaa90380084f7b87357342f99aaa3df5b4c. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/FRX872534382.