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 0x7f7981b33616037624f919b9ebe27e4b1c8a29cd6c96a9158b4deaf62f7083e4. 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/74339ef1-734d-486a-8d14-1159a7cffe20.json and https://artists.proofprofile.net/proofs/artist/74339ef1-734d-486a-8d14-1159a7cffe20.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 0xbdeb33fce870325f4f81c68dd9ee3f9899714e9fc51f5bbbf9bddaddc3f646c6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USLZJ2068923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11ff13a1f0b221e3c6050993eb98f7060b985dab87f71b60488e9007b01f4ed. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USLZJ2068935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2a5a921bc90c9251b5f6c8b9f55f26df02c125604eea603ad86cff9bc4e626. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USLZJ2068940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01d6bdcf28d18f00594fc37bd7e74ea192d59ed7bd05a6d43d8596c72c98773. 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/USLZJ2068943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ece588f9f153e21e02ac4f0569af28b42d8b32b17a214606b0d6fc47028a54. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USLZJ2068947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224161038ce57aae80f304afed408946cbac9a1f01c05283a9be1d1d1dd77632. 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/QZ5FN2123242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8309bf93cb98453789c9c36ad6ca7012c318c2d37db05f4c31ec5e031f61128. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/GBRKQ2135219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb00302338a8e525c22c3c7339a8042d8756d725c7529ef3a8ace260e24c65d5. 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/QZWDD2352941.
Okula geri dönüş - Eğitici Çocuk Şarkıları
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a56eb3613476d2af24d8859689b6e62cea53cb9ca57ba91630e189ee8bd4ff. 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/QZTRX2337542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac2f38a603546c27c5dd6a7f54195854d3a1c0c98c810ba642c7d8c5aa6996. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZTRX2378117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eefaca4355aa6fd35a0812534f175fb6ef5ea41f94478e58b35b4dbb3b719d2. 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/QZWDE2304870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac34b228c7707c420f5accca125e552fbaba819ecf3c23b06e02b4954a24964. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZWDE2304875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5b8d143e1df9ac0e509df37f507df03b8db9cb00b6e7b0495a72367ad3c2a0. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZWDE2397936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967dfdaf3d9ad878c606b822dc4189675dcdddf5e6e1ac0576d9f752900b7ef9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBWUL2498990.