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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e77a939180a7885960d9ae4c6d101bcc7e86252b40f4273be13df68f27e4fad. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/114dce7a-7ae5-4ce2-a542-9510a07ba887.json and https://artists.proofprofile.net/proofs/artist/114dce7a-7ae5-4ce2-a542-9510a07ba887.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89878748f1b818cd0a4f4e259e3484607ecce1ac539f88611b489da4ead6797. 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/TCADN1870300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7902a2b5bb53c59fc52763c79b094d49fd3ee56334494086cd2d0dd3b07d665a. 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/CA6D22400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791b8979af0b8c2ea34a78d9284f4e38cdd1a42c628ac8ab857f882a1938947. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA6D22300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e8d806f62fc74ed9a97f0d8c0983f1e3f86e3230de91441ecd1dafe9fa785f. 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/CA5KR2342625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e59af2f805a157cf6f08c3462d4a1aa7d005fccd3f79295d5afe493b44455f1. 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/CA5KR2342626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18460513b6c5ed321b33e73ac5cc7f12d6e55f1620393c5f29cec61b1d5aaa6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2342627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1995c2e68b6775d34c44e3b91700cf8bf7a11abb529644a68c0e08d7a2fcb5. 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/NLRD52259238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb63b24d2c015dca32f0cd20c10270cbcee3968dea75c9609dee240d80ba4dc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAGK2220321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd910dcd6504b8f5a6fa68f07118a3c601b1269d541293aade7a5ef51edf20971. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2216107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adc524f4b860c8fb856db0e2ae8282113de63f7fce804430cabb78fc5892405. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2205916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70858dd065d9fbf8acbb63565a45360dfa018124ef14ad5bef2339c7bb5baf00. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR2205917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a551ab1d4a4984e4c3e0fbdd014a70265806e7c2e0da7dc898d6244d62058f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2205918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b108630897907eb94b49b0e5b7f78d70315881f9bda34a539c7a348ca4b79ed. 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/CA5KR2205919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70858dd065d9fbf8acbb63565a45360dfa018124ef14ad5bef2339c7bb5baf00. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2205917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef51427fb6e18c2f9f02b0f57d803a166969fca264e0abfe4b8671964510e0aa. 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/TCAFI2020012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c6dc29d9029b01052d64c4a5ecf0540dba16deadf90e6c46864544002503ae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHCR2000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf994ac0ead684e2b84248296cff6d6446cdf23956cb127d025035a9004e571b9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6Q2072528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9466a6d5c1201852bb99229a4fb558682322317a4fead63be0c147a88a59be53. 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/TCAES2085828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546fce6a0cccc03d73e8408f1a9f28ddbf5017d4187db8872e2436859d9d488e. 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/NLRD52302475.