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 0x5d74b632bf6b3f74a2651f899bc8fef6e5a5e2965e68b46e3b17deb7533ace1d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7925353b-5815-436c-959f-93ac46305a7e.json and https://artists.proofprofile.net/proofs/artist/7925353b-5815-436c-959f-93ac46305a7e.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 0xc954b3dbe15f9e784dcc63a4d327aaa6422cb7e378bccf1460b333f144aabe9f. 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/TCADB1743956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee37327b3a516c80afd5236426242368ec2a7089a93543ae4e0c4ca8dc8e3b7. 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/TCADB1743965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83bb9f17bb24e8877960d93553f1862e16bf241177cd07252bca5d69efeae20. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAEU2096799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99b92de955bcd4be3fe0bfa064ddbd85c92bdfa52605013cb39785d5715c56c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAFA2083715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32790bbfa7dc90655d0139f8c89aa2f20b21d595a116a09a696dda856bb24ad6. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCAFA2083665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e653b989fee01f0508fe22daa016c70bb5c13dd6f32a7ba5c8d71cd81b72d03. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFA2083661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c60249c5cea2a4223dcbc54faacdad60cec33a8fe24b907ba3d56827cb8ff13. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:58:28Z), 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/TCAFA2083693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacd247815101bcb8a33aa1595b3e042306062613ddf859116f6ab843f9961a3. 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/TCAFA2083707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6439a545766e0b9f0ae06302dcd7c7040a70d8d79e296d20bbbc51fd2e5b1754. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:56Z), 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/TCAFA2083673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fa0cdbfa2bac1bf8b50c89fb51a6a0b063e559c33ce563b7791cfd4728ccf1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAFA2083717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd081d08db82e209c9f923655d095867a35b939b46322d4c8152adda5dea5750. 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/TCAFA2083722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418e05beca3ec8e9691c5f973a2a9486b4fea66ac88c876d48671b7df2f53290. 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/TCAFA2083727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7097d16dc5f2bbf7bb84f951d0fbc796b2afb6d2f8fc8520b898a03afb5d51. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZMEM2187510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09215a319ae8196aa83f4e3b6a290ff606d9b88832d098949b3eb1c9f726071. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZMEM2187512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb21e7c5ab2afd4c3f3eb9c14ef5e0cb658ea9ebc18c4efba523ae9cb77d9f9a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:50:38Z), 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/QZMEM2187514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0922da4061d0ddc9b816c5529fa4d7dda05a170cc824f8cfa529a9b311fbb3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEM2187516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d661eb903932bd19205597fb4b60c124363a9e25f97dade9943c94a82653646. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:03:27Z), 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/QZMEM2187517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276e31cdcc7279bfd8763f0ad0ea2dc7806ad76e8f928ffa1b9122cdff4cf133. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZWFR2303057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c53c18503d0c6be299950ec4ceefca88312441b54f85da3e0a12eced1e66e20. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZWFR2303058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49e207b983b917e086928b5fce881a1ba32c94c3c4be67f3a515a7941759e30. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZWFR2303059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1e260e228079c285e03199cb503b5be135cb98a517d83a5d301373cf6cf098. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:29Z), 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/QZWFR2303060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2023d1f18e79ea9a953c8b0f1c8a16131af5d7a765aeac76672b8e7a32f782. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFR2303061.