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 0x26834849a0df2ab383cc514bbf7f62ded1373cfc69fee65f7464f9e5d1b57cd3. 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/7a105032-76a6-4ac6-a510-3253c8f0529e.json and https://artists.proofprofile.net/proofs/artist/7a105032-76a6-4ac6-a510-3253c8f0529e.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 0x603c13beb109626e71dd7ed0f80863239703edb78988fa207a1aefbaafb43b94. 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/ITH641923297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7876039425e47eb7aa43cb8affcda51426716db7164be45bfbde0c1690dab77b. 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/DEZN82368064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d432461f4feccd4b9e029d43612ba5d0dbcffcf187a2c414669b4d91fbabf0. 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/GXBNP2402623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12aebdee0744df961ad1092617d05f8153a34d04c459764bbfc725604ad7ca6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GXBNP2402986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd7d6632bbbc9665a0c4f629a5fc88a7f7f133e6e876f784501386e40661317. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GXBNP2500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a5f893c4353204d6424c98f88a648a34db63e99ad178485264b997f812d462. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXBNP2501117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676d62c3768bd56c5a9db711a0812eb9d5a8230313ec92429008cd79a8701b7e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GXBNP2502480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742bc731a11f7abca43621c4e49eab3c78b07af14bd346dcdf5c9a3b8b1ba02b. 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/GXBNP2503318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61108fdf9b963922bc22613c4beaec5a4eacad332680591c3bc65ce50332f1ff. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GXBNP2504386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8787c2aea44ad72323b38097ab24b0f0a31090b458c73d78085e4fa7bcbf8bae. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GXBNP2506113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5f84313bd6cb71a8b33085371e29d61e2bf18f13fec49d940f3c6f86e4d26f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GXBNP2506937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e242894a318e7fc80fb37c9ca9cc5af5570da5120e07910436ba81858d2125. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GXBNP2508797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212701ebf2f02976bbe71818ff8319feea2c501974403ef675ec09169bdc4ce5. 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/GXBNP2551225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2cb9f90cce82529d5542d03f43e676dd3619058e715328c0644149164f8814. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GXBNP2551854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5b7ab7bd4f987e1d3741bf18457c2b4eeb9a2345752b943c0dd40659ac9d5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GXBNP2552497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbda747ddcbff48ae4e0aa2d2ca35e67ddbb885d074fa329c36c08cf8384185f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKACT1947712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18588487040ce37651d37ee0c4bd0c2b9078915b9e4ef0a4ee91fbdd530c1630. 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/NLE712400057.
Lilly's Song EP (Lilly's Song Original mix & Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679987011f06f8b42f3948c7d52af4517179547042fbd995bfd7a49f205dd30b. 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/QZ5FN2119776.