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 0xd6dca28dd244f38f05b6d56ee333c6c0a4209190e0f727918c212ace5f651005. 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/e2266092-0e69-4a66-b724-0da6a6bd1837.json and https://artists.proofprofile.net/proofs/artist/e2266092-0e69-4a66-b724-0da6a6bd1837.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nyanyian Pujian Hymns - S'lamat Di Tangan Yesus
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 0x86a8b4d8197d7ee6cc3d9be8f83ba750bf69120c9af99bd3e2cb76a2bce59194. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/IDA141702193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea1f238daba8a88b9438c5fffae28e23c2989d5f32d6d7f07c48c6a8c589ecd. 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/IDA141702194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6a2594a72992b668efd1d544bad452d544b0d39896fe55629245916f9ae563. 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/IDA141702199.
Ise Do Alealenta (Yesus Kawan Yang Sejati) Pujian Rohani Batak, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9549a64a3bf3b742d0583f09e40846fe9adca427e975b85f95a3fed0df861907. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/IDA141702203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6ebcf14d6aa00e635e59e0e310dd6ec1dd630e138e4d13b0301f6db8a555ec. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/IDA141702206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e716ac06b8188a70541947057ba82cc3a69789e3d5b9fc193819a04e2eb481a. 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/IDA141702207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e18ffa90e0cf6456539626026fa61d5a72b18f0874cda94ed9febae2085bf7. 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/IDA141702209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c030bb65441ba5a031013a7407d0b4c413d0d2072b7f8ace840d571fd4ba2f6. 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/IDA141702210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e9211cfc36377421dd29ed52cfb70f96826ca672e93bd01af530a3b79eb16e. 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/IDA141702211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b7a2ad24d061de31f143f07915f56070644b662422d423d95d8c36b87382e9. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/IDA141703027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad21d57bc86d5b390808647976d3a30e09e5f5e393f13033a1b5b6bd580634c6. 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/IDA141703028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2267ec7a0a62f27bbd3e5206df2d6c636e7134539374bc0f35a617ec4cc598. 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/IDA141703029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303f4325331e3995eb411c88db3fde53a860b9c0a77beb4aaa8ec4aaeb0754c8. 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/IDA141703032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73682304605bbc7a6efb08f2ca59eceb2bff80890fae926d955d8d699e051ea0. 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/IDA141703034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8693667a8ebe1f0351c891453054d6090398dbdd7ca50f214a54426067595e4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/IDA141703035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68c1b1827d4193fbb7b25bfdbdbb71065a9476021a6df9fdb2255b0e294c11f. 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/IDA141703036.