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 0x0c7770b5b678093ee6ce87756ec2a2094f29f3bce537dbcbaa97475eeb42b770. 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/a537c52d-1321-43ea-b1bb-dcfd93c09a03.json and https://artists.proofprofile.net/proofs/artist/a537c52d-1321-43ea-b1bb-dcfd93c09a03.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 0xbb9b79c4f252186e52b9cc56afe3d791af81181dd5ffbb7a24ca7dbf7775a535. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGE2205424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2854eb9f366fa916f7a144db98b40af3080afa5c50c5912a8b856acefca1a8. 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/TCAGE2205441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a16df1eec946b6238ba5b05b2601ed8175ee46873d8ce52de0c41002c7ef07. 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/TCAHJ2369387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4d8f390eb0c20003a50f5c08f97ed42256fe93411cfcff1b4b8f7d88123b52. 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/TCAIJ2424104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07fdc0889c123f802a5285abd93047f66d1bcd4400e3d4633a40eba3756488b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAIJ2424143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52a9c1b9b61236c9c8f83bc7b89b4d3807baa851bca9b2a58af5cce8433c982. 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/TCAHY2487955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac54b0b61b5b9c6cadd8eebc639710cd73feb6c337a1f1b83f1c8a30cf1b653. 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/QZQAY2369802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707ce286cb0dad8debd48f723b10a3f69d297aa88514b01ca351318e6c539473. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCAIJ2424397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6860adfb7e0b78f0a53fe207a1bbb0b2184e58700b6ef3fb3517531ea8632d7d. 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/TCAIJ2424487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058e3b69cd8f84cdb37a8d6af4c27a3c9108742e390b5fdf838f4d1a858e6507. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAIK2424568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c95e92b1de5898adc577c965b00aa43e6a649e615b33b6721642cd4f9aa22cb. 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/TCADM1868949.
Livin’ ma life (feat. Raz Fresco & Chelsea REJECT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60afbbba5ef636ec391c203ff6cfde8fa652b4a7f326948f68777f37da5c2fe5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPY201807028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3dab08592f39086f720e00f19ba46bbf7e7fb8c5018763632782d9593476c3. 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/JPY201807038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42174ed730f29c9bfebc16c88b537a1e81ccf7e087336d28fc974352465e57f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US6YF1500041.