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 0x00b59d534b2b2cf7fce05fa0c9b77391221a719512dbe2569efa9d9b83a033e3. 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/66088050-ce51-4841-842f-72938bb5c25d.json and https://artists.proofprofile.net/proofs/artist/66088050-ce51-4841-842f-72938bb5c25d.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 0x7561d31862e81b51c40c85781b0636d0fb6e0204b4c016eee428786cc83b96d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82412063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde73c5008cdf437498a787543da3bf5c944c64d2b530121459d5ffc0c2d0199. 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/NLRD52340559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ec4606790f76ad8a58aeece05c0bb9399a37c3aaeee5dc49abe278fa758c2a. 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/DEPI82212890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633dbb5d9892487b73bfb54e2e18c3ff5641d08ef88cf4357923bbeaf24b4f80. 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/GX89G2499579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad1473903090585623c48f68f010d06df0d48e0b3e9bc48a6fbbea8a528f3c5. 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/NLRD52340493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd28af1f4922eb3a987e14a1ee58cf7ae8d16f21060a4ca3a2dae6dd2906656. 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/NLRD52340492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753bca14f69a6e831e102dd188c287440594ff823b76ce8fc4014f3ce417dd50. 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/DEVU52388002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12688409fe2d770671643ad584f8ee5e5812fa56cf14c487f1a4de68c4805298. 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/QZMHN2398893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8bea4d67fb6eb09c00836c513783135ed8494def2f146cc99c7d4549a55cbf. 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/GX8LD2249930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a0bdf695bf486cb7d27b4eac853e23021574b283f0410ae89eea8b72af1b8d. 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/BE8LH2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c5e574d1873ef2228f592887b2be90b24ad794ca6590c5debd40b177d0aa5f. 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/GBKQU2243333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa988c9e48d6d27af55efa9593a334fc7eb071206885375db98b07feb4b2b44. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZS672228866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb081b331390e70ec038a9087ee1e75abf696aa7cc59a70baba99dfb12713a2. 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/QZS642258337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb38e73fc23ba4b5ef7f6da529a51540d1b950f98b09074629c67156323d294. 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/NL2QC2100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9691cb44ed5c1476fa0487c4271642fc1931972085fa2bb9ca0932a8f31007. 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/QZMHP2042337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfc668c99d134d2b18bdf9136514f4e1c4d47e8ec7374fcbd769b59b4ef1362. 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/ATEK02009081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ed09479ae0b4bf9eb6238669f1186412af13b0111fb0898a3d0a3f7e91dff4. 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/CA5KR2057619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa684ca829ca4fc414faa266fea5ad413f52b6576b804779944e6383386c1331f. 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/TCADY1811742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301cc37352bf27f15a394719e0e86e52b7ef232ed5bb558d8f883cb4c0ef0e4. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM4TW1789578.