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 0x42912e6713f2f03ddd3af08e5c64fca8a99ead37426e3930f9f38628ee0fd8a1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/746069b7-9d60-4ba5-9848-4e5d08291ab7.json and https://artists.proofprofile.net/proofs/artist/746069b7-9d60-4ba5-9848-4e5d08291ab7.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 0xdd9e98a1d7d872aea60c4cc766a913647981378ddc0dcb556e102b0a26f10d66. 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/JPB601504179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd95d3d5edf159db2b5199718479c266d9a0a5bc7fa25a121123c5a50ee1d954. 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/JPB601504241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a1b14ebc0e98e8c2ed31c3e7965a6519218738d9f6e5ef1235aa3200606b4c. 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/JPB601504242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f65c3e0f850adda6bf5c4af2560588f2fedd09b87498896c763a558978760c4. 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/JPB601504245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028c621bd072e7557ac2939773c8592de081a1752d72fd3c0060a5105b8bdf4e. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/JPB601504243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbcdcc1bede9fa23746e1c34ec55850030883ffcaaa61adee70cb8cb832240a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPB601504244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1cd6c69c1384b80b6d92ea3ae2758b04c49ddb640749c2f0c60746bc516cb3. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/KRA301700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640e3bc99e57e6c43b968d3a46180e8718d7128213e72e45389da4a97ea5658a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/KRA302000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f0579ebab5198a6af7ca6c044882f0aef88c59ac79f101155d5cd1c2d56ecc. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/KRA302000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f97b57abe8e521d2bb646a57d8a0ceb12e1beb1aa102116e502e9daef07620d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/KRA302000588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5c5b53a1eeabd483ddafbd1fc23d812c446da4916cf1f4dd1c39a44e648ed3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPB602103883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70907d9b2cc26517c3e9d4bbc3403cd26869de78dfad7155418159a6fa9f8ac. 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/JPB602103885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf4e7ea232a701aa6d93e799118a22bbc0cf12f8b8298b70b60d4514e330818. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPB602103887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b766f83709fc6440960dfbf1d13c91f242fccceaf32f42866df114d398c3e98. 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/JPB602103888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1044a1f666e64cb2fd1b67253dbb6be986efe3d3886b03d1b567425f5355d743. 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/JPB602103889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d133d495a5617c3a8ee78a3ab4f01980a7462631a5962f896de5567f491a7f. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/JPB602103890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402b9cffafe312e4911bb21eb0c6ab5aef1db2068859e89f0bd673cce383f209. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/KRA302200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60a0e99746d50293c56bde8e30b2ce30f48a4652658ca06ab5b93c5106448e0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA302200276.
School OZ - Hologram Musical (Original Sound Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d2fb834b97fe9eb05796e98606e56d23b358559254d2a55d2dcb30b1d3190d. 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/KRA301500704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee00f88d6874a4399caafff77a46adda6fe30e2a5af2ac280e185f6ca23cb63. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA301500706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4863c4a7129e6c26564b9caf0bc4c5ca7445e19f28608ba27f97857b721f3d67. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA301500707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3377f74ec36bf63c474a8a6671c9c19749753ac4f443050b4ceea2f76f510b35. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KRA301500708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5942e7d1e86eb7349dafb2e5337af99a71a765c38793f75284777a6c17b274e2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/KRA301500709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2d3cef3e6b35200686fcff7c00d233a76f7a281b67a7eca837bafcb4276987. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/KRA301500714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1b8229c7ea10950a8f21d375c85c0cbfc5fa114981d8722d48cdde59f011ab. 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/KRA301500716.
One Day One Chance - Original Sound Track Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc4975816d13b0b7d7a6bb496ab69ae270fe67637d6de00390c88bcd25cc823. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/KRA301500717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0584a7249f374fbc0750a08ff902515c96eaeac3d9a06b052a7a018bdbde9dec. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/KRA301500718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32aeb180a7841fd242e9856b0db28b2609b805a5801d69cbeec7663c3e34857c. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/KRA301500719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb670e6a255190125d656d1410cd17e801e53fededa743f46c33d3f5fe1fb6a7a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA301500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25706f9a46ed96428f4b3951fbbb545a1f4d4131c55a1df5f0c4e92ad9c28e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA301500721.