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 0xb24bf71afd188a3b4f24a38561dca5302015beae2e29cdcacd0327030fa9a68e. 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/4eb5b1e2-f0a6-4b4e-999e-90423b32deaa.json and https://artists.proofprofile.net/proofs/artist/4eb5b1e2-f0a6-4b4e-999e-90423b32deaa.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 0xbdcae392c1384c6365cc42fe778f870325dac31382f00a3315fbf4440c7627b7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCJPO2123171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d0bdb05d5095291ed9aadbb88778a3668139fea132145de5fdfa7857e69d8c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPP2166624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeabe45674e52ba9db3b7c642a64cc934a95a715e67079ddbe43898ff38cd37b. 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/TCJPT2200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934c8d8d3c2bf1911c02dd1cc97a815ab23cc20dde0aeb13714d8b33ef9ef61a. 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/TCJPT2200236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa813691915f110b96ead0a3460dd7bc36278b06a463ac3ba695355480472ff34. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:03:33Z), 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/TCJPT2200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3307cc49a9c26149c83c06bdccaede2f3fbcbd8ae0b4045e233fd939678f4f. 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/TCJPT2200267.
絶望メンブレガール - 双極スペクトラムver. - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1652a7e78b9e3c4e4b6164b4b9ec4d0659327d05aebd36fdc0955b3ec6c43663. 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/TCJPT2200279.
グリッターレイ - 双極スペクトラムver. - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6f43b22a9cf202a496761f156375269caf4f715114084959757e675232b0b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPW2364245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996229d011b731dda4b5cfd8873a6d417cc0a586c33e0ca058af82793211bfc6. 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/TCJPW2364270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf995ddf04102f8a09332aeac8ea496c116d6f54932e3fb724ee57e8555d96a. 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/TCJPW2357249.
Call of Destiny 〜幻想の未来とその果てに～ - 2023ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe642ab8c461205ddbbdb090859272bea35026b5e703dc4117c9038c14fafc493. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPW2357269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3973b9fb74831cef9843674c3ee2d2dd53fff00b134946c3300ba1e13224c1. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPW2357271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61977ede067aa086604b60594c7703a2a4fb00533debfcaf121877f7bf514e87. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCJPW2357273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f83d1bac06e322152243e55f771f007442ab9b5e75629af35e75bc25cc9b24. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:48:32Z), 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/TCJPW2357282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a12ece116347c27bdf0deea92d42435486d954186f7d93b3d8140da5a8d112. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPW2357289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99f857ec74bece828174abfd8658b9c8dc5201a0aea7986a37356793be8aeef. 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/TCJPW2357313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417aa9db5c7c66552ea8b96a9d0913d76f5fae7401f2eb5f79a8846191cb69cb. 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/TCJPX2302833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677f2bb0bbc50dc935d9de7411c86024079e138c53fdd0740affccdc313a7560. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPX2308701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc36671f2da2de3da9600838ea85021c92019263de128ddc89da5ec854df493. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:50:58Z), 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/TCJPX2308713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66c27e5f241e2d61db52526114896e516ceead569fe7b657523dd07e12b42c1. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:10Z), 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/TCJPX2308715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50597ba4ded62855c79749602061ec201e16ad29668b1176a936f7b5d32d57a. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TCJPA2493030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ae8f8359b12c6751d166a27e977008f132a5c8c3ef365833aefa2fbcd8691c. 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/TCJPD2402430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c506283afa1c743eb4d06d1a2901f76fa2d76a2abf8f9040af5e4cdcf1fd41. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:03:09Z), 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/QT66K2534826.