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 0x9c9258ac299e5eee7b06f2f2d28e5ba5763b43daca647021ea5d0c10ab3085ac. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c5c6818-f749-4dd1-a98f-6282fa93fca0.json and https://artists.proofprofile.net/proofs/artist/9c5c6818-f749-4dd1-a98f-6282fa93fca0.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 0x220d9e0fa6753f925d5f9175d06c8202d175a5381303e4082422ddcf32b58d14. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPX2328099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307d64cc80b5df43cae8d3d5ed80857901c2dde6cdd8098c369ce853508d47b7. 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/JPB622201242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d140b3dc63d4c6b8e9247fd652b2866ba66e404c057ccbb9928a142f168b7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/JPB622201243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe931275c58bd0a037c38b7239571a7d2f3baca22b6c05411224148a29a8fabb2. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/JPB622201244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2403bc9b84de4c893388355a167f0be1d1f9366d2c3ad9dc86ce235efe89db0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB622201245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888d0b96d2ac4fd6b97dbe961213103f222fdfc9e8a42358ff6712f1d7e4ab71. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB622201246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb1bc84a60cda375aed613c993154b715ec9052117d8cccfa56dbfe9050086c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/JPB622201247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd229a42d9c539c481d185d7ecf6ba1c58b9e5a49bb72b9f0c8aa66e81c4f90. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB622201248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412492685d1c37007a1b0b72dfc5169a77a559b5062c21073627ff27fe2f40a5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPB622201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ecb6fb71b9844d92aadaf40cb4a481ee3ed0b1c649600ba9038dbc71befb1d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/JPB622201250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1747a9341d5da9ee8a9eeec538fd777588df7a7dfcdadc9cb87c354378e2395. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/JPB622201251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ab064832135b292a8336242fa15182ef1bf155ff7fa0732cda6c6d621d1d2d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB622201252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4048486daf7dbb1cf0e4ae5b4df0f1469b5b0eeccec11b483e8f6f7e900f34. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPB622201253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565c30be8897cdcbffd5b2b118c7f3341c1bdcd02980bea0dc4d247d1d934289. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB622201254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09463acfd0ff58648ac61252ae32f5e8855b7ab6016e9321d0f466d96ea2253f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB622201255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc800abc3ae9512b67176dac5c131ed5963122849d350ad5b084d08eb8dda24a0. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/TCJPV2367117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07986b6fb21403d045f78a2d172d01adf4737fc41a83eeb1f6fe953ac7e86ca4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPR502305994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66a8a5c9c507d1c316c5f4168184684b694ccc8766838872001860bf9d548c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPR502305995.
KICK&GO feat. HAYASHI AOZORA - PAS TASTA Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045f0212f457fefa001eee13d166fbf21a46652f2570f1638f44a13ec951667b. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/JPR502305996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c6b47f1e0535ea9c626696c725b3c4558f411037bb101cd186a67dac5c7409. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/JPR502306000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fc0c8533475fec396a8454ee76d38260aa76996de020366400669c7a782c73. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPR502306001.
Day After Day feat. Mei Takahashi -TANUKI Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e3bea63ff69841e63a59c53652e747762c37b209ddc57b0b4e5dd9bead03fc. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPR502306002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758283c06627ef50e892e1ef53414259617e2f717dd160a16b51b2cc1a1df625. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPX2378558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46441ee995078b4d6e7b4fd74cb8b16217dd65ef8726298c423194e1b9d2c3f6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCJPX2387484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb934a8117bc705272ebfed3f4fc9fb2c835d4ac08331dc1bdaa18a2c7f358e98. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QM4TW2222992.
2005 - Telematic Visions Hi-Speed Love Romance / Letter to the 05 remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad807f996ca0e63f2f3f7c70e0468891d9dd142349d7dccbd5b58b726b368c09. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM4TW2222993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908f59c214a88bd7dac030b5d8a0f8b97a6c237e219c93b078520b4f83c8eb02. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QM4TW2222994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0da77e46d2e4b9af17910548fcd9aaf582ba11b414fe302f2f64291529f52d1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM4TW2222995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf833e9b8e508357adc28913057c98d6c8ea803140974bf31a1445f7eac0a1c6b. 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/TCJPV2350617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe443e7701f663d483ccc6ff007279212ed89af0ca8c6db0674e5a40ef9fd8eb5. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCJPV2350658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21efe1d67c33d6594b2b983a115e5d2b7ef3939c97f4815d85de43c0f2983867. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCJPV2350676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dec8499e7d7d0a850d13da37f74580473bfb38a0a07ec060b4988a24c15a72c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCJPV2350680.