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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad97330342eb2f23285c6f6e55c01e3272916f57446fec5e8ce7d24e10d8934. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20cfb416-6335-4a97-9cc8-a2df3b0ad107.json and https://artists.proofprofile.net/proofs/artist/20cfb416-6335-4a97-9cc8-a2df3b0ad107.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a7d5ca25ece3e0d48eb8a01a376b868d794128f46f77ef30c1f4a85c11de08. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWR2423428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7377288b5e966a3868ed5f63f7932eb19df03025c56f7a6d3f328b19a6c987a2. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZNWR2486362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe974d9b30e85eedccb4a70f0f84f6e6e91506e6aabab96fd20e4d76796ef170d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWR2486363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1462e84a6498a1d7b85822270be2baaa334d5083001b974cd3bf316624a5b17c. 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/QZNWR2486364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d860d9beaaca66957d808b4da19da3bb513e17561395228e90c82f451382fe2. 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/QZNWS2467976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0965d1089072c718683a826f694bf2dc261c4aadf3181c15940219b8ccfaf2e. 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/QZNWS2467988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a50710a85d7d01fb54560fe09a2302a6d23a584ed11d1d6e34c2cf54eb74df. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:36:30Z), 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/QZNWT2467408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8befff506bea9feda91d365ec16a10ce0e1995370abe22b0a7721af496bfe36e. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:32Z), 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/QZNWV2444889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb41192e704e3377fbd8d9daf73be1db1f3baf5a328b73cd1d7ec2054dc8b361. 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/QZNWV2444890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5809cb6c92d6e29e92130301632597d3e4aa6b86b2be4dc26306116fbf9cbd9. 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/QZNWY2441523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b457d7d6d5dec868bfaa82d433dded27a647caffecfa7bc93fe7dce370d8ae. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:46:42Z), 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/QZPLR2447661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9984ad8ab8104f296176bb43f821156954f929fd0870d5267ffa4b8e87742d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:48Z), 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/QZPLS2468220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb835b6a74166648028043cb413c02f4e5bbfe86095bb029c4a023ee81c3166. 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/QZRP42478548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fc867f26a91ecd212da03c7c3296a0309b9d9c96375458f19e0f865586998e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:08:18Z), 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/QZRP42478549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0029f08a1f9e9a9b6ce8dac6aa5a5a9af9c2e17ca6dfcc75915112b2a53395. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZRP42478550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d72126bd3cf00f89571188d0e484022daf5c0580639fccd86db79edfc7cc113. 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/QZRP52489773.
매일 밤 흐르는 눈물의 의미 : Meaning of Every Night's Tears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7c1a15b071bf3f06281bdefd331136472cde633c92e353ff4e37fedc148650. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTAU2456898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372886715327b63a6c81db11f0d08255a9490ee4bf9ddc1c9d322649918e62c5. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:11:24Z), 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/QZTB22450939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0a0a869bef2d6c96773dc0aaf6bdabc555b1f0cbaaaa8423b743ce514921ec. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:23Z), 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/QZTB32434638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757855669127f6144f8edd9f02bd2ec9ed82781acdc28b01c6543a6a276f483. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTB32470197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c751812aff2b4f67af7ea7fb3e7705a2fcc5f2c3b09f0ef5d8c6ffcf0697a02. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:26Z), 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/QZTBC2412495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469bfa5a3938b784bf8ccd937c962426117e634c0ee8f3cc43f6bb5a2b036fb5. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:27Z), 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/QZTBF2401811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d0d8c33096b682e2b4560701bb0c2df91c4951900842fe3dc04e8c83d71cf0. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:48:37Z), 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/QZWFJ2456867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379744e6d1537b558d11b3bc6bc72038c787ac8f9b6e2c842990251c6de2d543. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:09Z), 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/QZWFJ2456868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db3415402e1a3c2806bff01500a9d61ab703cb4d040272171d73d97b4d9b5fd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:26Z), 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/QZWFJ2456869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7565c311bf9f3bb878c5bd59d3fd146fb77bfb631fdf5828073abd7d2d7945a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFJ2456870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18115f274be696cbb8b3e5eba15bd2af68191094c246e41352b658be0236fa2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:33Z), 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/QZWFJ2456871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1edfb4026fb03c9a718fd45f1718e7151adf468146bc61b1e44cc0375f6c141. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZWFP2461096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7e05c160543f1b0ceeb2638210729100436376952dd84ecdf0c2aac04273b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:41:58Z), 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/QZWFU2479621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c232ddd2a14e254724fa36300edac758c3081b6424e16bcbc8c2388f77f33e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:16:30Z), 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/QZZ782445549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a131d69c1d9392368485d471a9e2df64637b9043e970de8d93878092359616f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZZ7P2411741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c02e5ca9e3b397192735affde14309997fea18cf71f8e5d544a653d6c699dd. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QT3EY2411579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd4c7a16cce099fd50e57e621625c5671190ce92dc4ae396fa02d2235e542ae. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZDA72577817.