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 0x892245315f37c2e42e3c8d48e5fb8006bf0696b4dbd332ebf006fbd5b3f07089. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f548ac5e-6ea5-4454-9c17-c8ce020b422e.json and https://artists.proofprofile.net/proofs/artist/f548ac5e-6ea5-4454-9c17-c8ce020b422e.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 0x48f4eb276faf04a346ee6d754a66262273fb77b100e20aa88252fe45e6852499. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/KRMIM2105779.
아 하나님의 은혜로 I Know Not Why God’s Wondrous Grace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c651fa3c9db80e3417d30604aa41d5e0fd1750c17ca73f36512634b72ed8be. 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/KRMIM2105780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41009265efd2aef2342544e8c71800761163893320f3a899513d3b5d3ead306d. 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/KRMIM2105781.
십자가를 질 수 있나 Are Ye Able, Said the Master
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c264256068fa7dc86edf8c1ce5bc71d00aed7997ee86565c4d95883e9361179. 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/KRMIM2105782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1640cd5eec005b5c39f1c093db2cf7c7bb791921d36548c5628ae2d5cfcddd75. 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/KRMIM2105783.
너 예수께 조용히 나가 O Steal Away Softly to Jesus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0c4d1973455054634883fc645ab72e2564600da1c88a64e2f39195518d062c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/KRMIM2105784.
내 영혼의 그윽히 깊은 데서 Far Away in the Depths of My Spirit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ecb53aaad87d934c455de82c35c07fa2c833ffb85c6bb55de9f62891506b81. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/KRMIM2105785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141bd36ce4447bf38ecc9047b33ba879529582153795611747143cdfcd368776. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/KRMIM2105786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575ea0b17efc7f71c6e45edda20986f7f192700196a6bf551459600e7b997e5d. 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/KRMIM2105787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6873ed32b20b83e709c22a03768da913ead0bc9a33f82f0db533b79d49cc0143. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/KRMIM2105788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0249746af230dd92d961af9aaddc2e84abcff3946f6f475a4ceeab2da191007. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRMIM2105789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd272ac16e57543bd67573e6b11dd5327f4a66b3319a265aad9e97dab51c09797. 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/KRMIM2105790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ead059459c7bc5d42c9de1f530e21f5a40f399d07a416d6c4a034ce866d68b. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/KRNAR2353264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5569409caf24e0935a487aa29b15e07825b2ca3a19748d3a1a557a3df9a9d84. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/KRNAR2353265.
주는 나를 기르시는 목자요 While the Lord Is My Shepherd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5e10bcfc32562d9a7a1260239bba3c3f0191de5a4d5116232de4b730553d33. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/KRNAR2353266.
예수로 나의 구주삼고 Blessed Assurance, Jesus Is Mine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3d8574191fe48c61fd85ccc6c326ad0ec308f0e3b39cfa55df7515ab51f74a. 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/KRNAR2353267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7179f6406ad86b1784a3dc36cd4447cd1782ebbfbb24e802ee62bc4e4a1181. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/KRNAR2353268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ea2d001ae3f1f8bf40ebc4a1d9a5d88bea77f649b99e82c2a6f1d673b9d535. 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/KRNAR2353269.
내 영혼이 은총입어 Since Christ My Soul from Sin Set Free
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdcdc75aad5a379a98122a603920b49eeb58ddcf3aa7288b4aa486f5d07cfb1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/KRNAR2353270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871517b5098e4b492315837f504fb61a38b0a42fd8de42d15dad8459b1df3d9c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/KRNAR2353271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5635f4e4fa375584db3367cef199c1b8532fe180d980f4adb64a714925c5b1e2. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/KRNAR2353272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b501df8ad5a8d155b1df4929e96ee5321c57e40058eebbcaba89ba42cfda70. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRNAR2353274.
죄짐 맡은 우리 구주 What a Friend We Have in Jesus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d2bf84500c35d4ba2dfbef4d1d8e098ac965390559c9359e4674a04f424003. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/KRNAR2353275.