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 0xbfeae3444045dccb3e80d04094c986488d8e98cdc2fbfcbf429dfcef19cceafe. 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/67f70a78-dac1-4166-818c-a49de22f46ab.json and https://artists.proofprofile.net/proofs/artist/67f70a78-dac1-4166-818c-a49de22f46ab.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 0x5933c9573a2cdc3a4aefa1ad13daea163505b3d0bce408c0acae54ed0e9bdf8f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/COA6W2102005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc95ee606a847ea2d9542d22cb10578be8fbf04d64d0150b6ade45badcce7528. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/COA6W2102008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb490e6583e45db1f4f70dea9b2b94e651737bbdf7071dd82b0ce25f58438e1bc. 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/COA6W2102012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43abd4582840ea78e35b094ef2f6c30fe4c5259d8aba285fca19b91ff71a1df6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/COA6W2102013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962b31008a2472fafc2d24a43285e4a848b720a2c5cd29682801ee782a471664. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/COA6W2102015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5933c9573a2cdc3a4aefa1ad13daea163505b3d0bce408c0acae54ed0e9bdf8f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/COA6W2102005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc95ee606a847ea2d9542d22cb10578be8fbf04d64d0150b6ade45badcce7528. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/COA6W2102008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43abd4582840ea78e35b094ef2f6c30fe4c5259d8aba285fca19b91ff71a1df6. 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/COA6W2102013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58d713070c3bd1a4aee60e9660e86a6b40e2edc1ce9fe80d045f1877da09c01. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJX2107816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c4281f031b715cac66dad7f47599e349b7fd21e119d853597de6b5dd887420. 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/QZNJX2107820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0209099c3ad5943281781d2447103929622f813e2f70fd2d670fed1e371fdfab. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNJX2166782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e4cab97df014f62147f88cd482dcf011ef69206d66a0435c618b045d14db6b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:50Z), 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/QZHZ62209296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d07b757e8288bccd8b3633a149d42034e0df1ba0ece56be76d1ae5584cca236. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZMZ92249861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9427f8666c3c202852189d7ebb2ce82205ea873cb6df5ce0b78ab2a5a4f96369. 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/QMFMG2338285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ab3b25623853c96b8ef76d215fadc6b6f3b4814691d450706d3cd9d2b1d63a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMFMG2338294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1a0fe61e2e9f97eec0197cf46abce574ed3958e4d16cfbd714b1b89a708ad2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QMFMG2338295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f609151d3c05f2b1126719b7652f500f559b1bf995c8ffbd2492bcc5197607c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:40:58Z), 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/QMFMG2352882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e8c2b64ef45ad69b8512f01f0af80f27cf1ee33295d4ac5bc28ff60e691bee. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QMFMG2352884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d74dfb7838373947b40a479267f9faf1dd9ec53ba711c50cf9db0f1b3f29e4f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:03Z), 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/PYC842416160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf230d0a4f9f052e77cba0a859396101296c7207f88b3111c37b3a72d00fa7b8d. 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/QMDA62415246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfe464b47a082dc2564a38dcab4d7f02c39c5ee3e16d8139cae2bd4bf3ab293. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QMDA62415247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeb986f73cd54f018b5bce44ad10edd8f9ca684c64a83d5da1a95493f7d3945. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QMFME2441402.