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 0x1d8c3e9ef63052220ed58721889d3fff846e353d8c67e35116cf00c3712c2873. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c7c18c8-b24a-49fd-bcbc-0d10b8a72f6c.json and https://artists.proofprofile.net/proofs/artist/5c7c18c8-b24a-49fd-bcbc-0d10b8a72f6c.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 0x8e935ec1b0fae4c68964544f53f5d216a01786595926161e14fafbb241d854ce. 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/JPW562109589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee954e98d8dd4effa308b355695287e5408e04a56aee7b2f8566f4603155fdfc. 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/JPW562109594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f3b6ae63cab4717888748b3fa430fced14aaeb7ba787f8e85769fda57f13d3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPW562109197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc66b0991cd0204e9958c3ec8f71697bf77ca13f13d3947ea749ce4ffeb8217. 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/JPW562109201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4232860a22de0657e299bb9464d7d909a76274fa6cc124790137e7971b00af. 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/JPW562109208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb7b16719f3a4a77970567b4605098f0ff34f190782ea4b34f22159d66ca614. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/JPW562109212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae74cddd2973529687db3513a689e6341227146404201684f08cf2ec25207f04. 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/JPW561905574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d568d8fdd68ff8298144fa14814140efc28f6fbb3bbebfb260d00cbc003447. 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/JPW561905577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f78d5e414b26d182b2e95b478947c0a310d0b30773f16b9578c28e20779e0b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPW561905774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d76baf51ee75c5baab8593c6feec3b560941a22ec4c5fe125a8f5be5a2ef101. 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/JPW561905777.
JUST ON TIME feat. itori - D.watt OER Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf96c523b995f22cdfe92b32cd4669117de0ce06e4cc81771e0b15b511376962. 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/JPW561905787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72463f3b941ea236fda34e49e004d5b9761ca13f9aa7f4ab94154e3747faf83. 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/JPW561905638.
DESIRE DREAM feat. itori [2015 Remaster]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935aa52bdc3f21649ced42c094add1bd23c34cbd5a0b5be6f71314e691db6c6b. 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/JPW561905641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9af107632f4c81240e9220ee3a502c014b18ef1f8d65f0f3e2e1f55212c5d71. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/JPW561905886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f753fd80297480c22fb5cabc26a182ded45f00c2495cb06046debce4f35532. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/JPW561905897.
HUNDRED DUOVIGINTILLION ARROWS feat. itori
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15108fb0a5438ebe5b4acf7005d026aae99530e9d7cfe663c1df2efdffe2280. 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/JPW562108232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffb5ed7d138d1f07eb3431f4ecf1a59b1bfe682796d8b879f1d2681f2e22726. 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/JPW562108236.
Crazy Crazy Crazy feat. itori (2021 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca9d7bbefe0d19fad55b7cef6bf58780a45f7ae7c389319bd6e48322b7fcbc6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPW562107102.