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 0xe1bdaf9074ec833a4e46cab6121aea1a9994dcbae883563bc3faa684740fe015. 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/e3c57e0d-41eb-468a-9121-35c8d31de4d8.json and https://artists.proofprofile.net/proofs/artist/e3c57e0d-41eb-468a-9121-35c8d31de4d8.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 0x9207572bd9dca6af30cde8fe90632605afc8da3c7b2f7e1b5d7936e34cad963c. 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/QMPKX1861539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d076a351db0c796c3a1b61f1a768f97497a95228a8b437c90d35e5503a4c0e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZK6N2073847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c6f830d2d9ddf32277d5f8a6304a00bb6234232ab6cd4a2c78a0a30d7b583. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMEN2072579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1c56f072862c5689bd7b0a969b74f97f3691da8e83e89bb01742675471b986. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWZ2026434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cfd5549e5fdd649a49ea095859d6a428113e6a4f1f3a69db47674e5021a98f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZES72171272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2522f7032f248c49976d2e4ec75caef0e2403f41a40341b2776f58c51f53f18a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TRBDY2240201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311e295d3539f4e32193cf700d81d764e70fadef4140a8b0c041a3d753c19211. 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/TRBDY2240202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb83d4f7ba05a04398af0f06801a21b36e6fd4fe6392d4c4211aabaf2a44b2c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TRBDY2240203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2abbacd22d51adfd7d975f771b9291b0e9ec5fecd5b7f3b16089ae3c24b9b65. 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/TRBDY2240207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3150803c1e9d1962a03a30fd473178e586c0ee323b3e37c3171b0900dd7123ff. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/TRBDY2240211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcab5c6f7f1be1548bb55bc465c15d15c370981b5ea1e230ce6e08cd0f735e8. 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/TRBDY2240210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf32dda10f9ceaf2efdaab4be0d1e2015fb24e559f9ab2c5411f6cb89bc4a18f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TRBDY2240205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe002fe369c89bc2065889b9e5b4b26a6e6a5f77ebf6ba2400deb6a47fa0ef3ab. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TRBDY2355306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6605d806a74a3f59a562065df38b7ed72870c952b36261ddc7ab352584410612. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TRBDY2463701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d54755a2c77a56b79bd38f2e593606e386351c8b5f091cbd241c96c2f322413. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TRBDY2355302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe002fe369c89bc2065889b9e5b4b26a6e6a5f77ebf6ba2400deb6a47fa0ef3ab. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TRBDY2355306.
Noktasız Mesaj (Özdemir Asaf 100 Yaşında)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d20672437fecc5b8bead632bca1f91021a46c407c04228a6a2dfb5f8ed3fa8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZZ7S2404399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7970ec64d0a79fe0dbc2166a29e5376a16a4bef234912863f24d606bb84fa136. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TRBDY2572002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cdeba72d969d849d197b3f7bdf5d6578f421b71c10b78ceb4992a6e1f9baef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TRA162400665.