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 0x929661d2ac3f45618b1402466b59823dc76d5430fca469d4718e5b4544ec4b92. 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/e8a5331a-b132-406a-a208-4bf6aacaa4a8.json and https://artists.proofprofile.net/proofs/artist/e8a5331a-b132-406a-a208-4bf6aacaa4a8.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 0x3093d001bb5bf810ecda4f221eed8068bdbe0f6bb6ccda29e4bfa78c81fcc1bc. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZNWU2319659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec04a67d8c1dc8ed0fed58fbf8651facf0b251d4ee535ef43fd203573e441f86. 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/QZNWX2357191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad5896bad55bc1f9a573bed924b1856cb26e594e53f40047b5ed22bcd6e635a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWX2357174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572afee9cdcf2ace513bf7b04718e74987d8b94cf92244d34e5f1b38bd531f16. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNWX2357170.
APITH YANAWA DAWASAKA LEE KUDUWE (CHAAM BOLE) AMU SONG
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5798f55b3b0e44956d776e0a5ce150512b557ea3dd825d53ba458443bfa31434. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWX2357168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a74512d7cb084a30bceaf5d1b87ebb53fe43d607c091c691880adb0d8de5847. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFM2315842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c27351815810b5709cf5cd47d91a625b3913ed06eb7366bf8065dc8b97de54c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN32413663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57afc1ab6a8a05cadc02637c32f7d33f912a9936bdf6c6165be202567a61690. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWU2437968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54427c91bd8e2514172eb622ef074f99b77921591dfb9892ae1ed2cc05550a42. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZNWU2437593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce84165f96adb63bc2ba9fcd05b1452db2d4df6ed19dd5b29eae424197456f43. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZNWU2437969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9105a5c3fb8dcd35287012987b9d0a865a032c9a8c7bf3887c05520d17b1f63. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZWFK2432375.
Pihithuden adare livve (Acoustic version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568522a807ee5a0e809fbf7cbdc71be5eb0a93c07b78b73696703bb4ecf551ba. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZWFK2432380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaae02b19349c3a9323115e820d2c1ccd49570ea4d2c4649400c826d5e5779aa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTBD2520875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c728896217aa4c3c422d086ff28fc38419d10db3fe91de6bde0e7577c09fee. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZWFR2555771.