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 0xb219490ee83109109686b72bbc814bec63b6cc0f0fb088174d81061ef8f24eb5. 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/1cd66f18-66f3-49f2-975f-9badc1099f9b.json and https://artists.proofprofile.net/proofs/artist/1cd66f18-66f3-49f2-975f-9badc1099f9b.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 0x2c6cb18ec2c1aa49d9cd37123411d25801b498ce01af0a49715550ad2739ae7d. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USRC12001507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1929770d772269d3ac859ec6a27662cc30cc3f0a8e0fab6b701b639ab6058b33. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USRC12001508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33a9431bf6b12923bb59c8c55f6d103caa3853484c9aeab19b04a04f9184737. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:44Z), 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/USRC12001509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bac5d9d4afdb79f046ec13cdd2d1e113314219d133477046fce9a51907e7ae. 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/USRC12001510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc64a07124a5297e2fc7dd64e04023b9ae11aa16e690d7b18ef33cc470d725d. 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/USRC12001512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0f560c8e88d62a6893e6e5aa217afde2c01ebca4ecae17c3c4d06ca30414bd. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:20Z), 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/USRC12001513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46b2bff6c34eb1f2f9c426c26642d43964fd6a8ed85f3c2a51ae76dbe121c98. 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/USRC12001514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8066cefe1b1fe24220dba191f6d5e6c356327cbfa532e5ea0ad455448db5f2d8. 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/USRC12001515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f16d5ced17fcad6ffc55db4c1fc021e62f0a2cbafdb701f7af8c22b039dd12. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USRC12001516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9c89006b19c74bb4ac6e838b7d1ffd9a1afcd1fe73afc3a9793bf8c76392a5. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USRC12001518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1baeb72b78608efff86457e3699c85628b1ab122a74ca4b3b8f9030527fdeb9. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/USRC12001491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffcf74fa258b2e9d8c842d56a5ecd332efb020cb20b275fd7a3000b815e5345. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USRC12001493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9534378ac59ab34f47fd13a5c15855d1238234c5f267b8b3acb6edf31a8cb3. 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/USRC12001494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dd0dd1dd3c1bd328e0f562c185eeb36fe093ecbe7b7427b4087203dd024f5a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USRC12001495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee173e5dbf39d9440985dfa2364a3b301ecdd7ff6f1f706443e497fd3d7b6fa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRC12001496.
Richman Poorman (Act One) (feat. 3rd Eye)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a9e92e5f6824b79366ae6859432db842cfe7fbad0e323ebf9977f30927b05d. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USRC12001498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2905b5fdf4b5107633e3bbcf0e000463a4421233e75182c6d112724eea9b271f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USRC12001499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2788c732d19eb538392f721997c2c816e392bba0feb4e624a8a53e5ae5e13303. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USRC12001501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9ee55300cf95ccfbe431eb55975f1bc0c91cd07c81a9eebf678b8e8eaa6ba2. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USRC12001502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512b6e20eb502ac7cc34a63cfc7173980e1515fae0c8c9f2db372372f0a07c03. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DELJ81805323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380c7813796f4b9c638d5beeebf9087ae399aaca28e0f802844e6bf08bf6763e. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DELJ81805324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c396488b2926699880538bd40a3ec86f40abb37e787997ed71d73f05d196e32. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DELJ81805325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be30f2550c599c91863491ce81f24743b60f52790002f28acb5d50886accd1d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DEZC62500990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776fcd4a524778e3258c86cb2779a13873d5d3f0589ee80bfdc7eb1970abbb78. 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/DELJ81622174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2831bafb04ae49e3de240d2973980dc7d97d86ac3753bb97d8d882a4e6af1cf3. 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/USAR19900077.