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 0xb9e3e3c987323d00e5be2dbfaf2a0442256039bda5c474ec1ba330ba8fa05fa5. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3e08e37-726e-4e18-bf99-d3c28a97c264.json and https://artists.proofprofile.net/proofs/artist/e3e08e37-726e-4e18-bf99-d3c28a97c264.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 0x9a98a2fe6090bb2921de65599484667b1c1a7039d0a2c9eec6e9689db9a5e10c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2204380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bedab85f068d77a183108a1331a7202439dca3bb301ca952e4a526781192a58. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/UKXN22177840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73baec522708042d0553a43e9fc549b9ffc2584c2917138b5e8d0bcc80430653. 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/GX53U2064513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb881dd26a4d3a50e64170e626b1e1c47c413caf4b10927ec61c64864d0c974cf. 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/GBLFP2204384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0133c919b5ca152f0a80fe09f555e19baab6edd855482e68504551a84fb8e3c. 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/GBLFP2204386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f57711dd8d881b4b55b53f6ce2a5514b7eb2fbf16075d750255a809f6bc9807. 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/QM4DW1881576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8fd7e234de4ff616193682d0d6411b29b189bbb9aa7d04d35aaf733c451d23. 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/QM4DW1881577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9361ca067047ccb04ff0a6358d81f216cab4aeaedf4b0e56487df0c237336098. 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/QM4DW1881578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c59013136ead87c1f08d790de556be6724dd18c1cf9d45ac12f83fd44f85340. 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/QM4DW1881579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b27737d8e735ced0e5ff76e2ac61c03214c8af2bc19c06d365b90fd8819158. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA062378100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73baec522708042d0553a43e9fc549b9ffc2584c2917138b5e8d0bcc80430653. 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/GX53U2064513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21adb8d63421fb6c237ed009a362a6cb70991eae9941afe50f9d7ee442592fa8. 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/QZHN52079867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60bd49ee5cf7ac5fd4e110cd7f04c54de4a725cf6901b33efdefd2b1a8f5e07. 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/QM3UY1900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d8ebcf167e95aca13e1adc3822f1a8b6da498374fbad49bd56bd5b9ca98504. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM3UY1900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8317d6d957eed766183822f77362b691242affce9486aa7f0bd27c9ffa830d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3UY1900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dc1847f201b393a4249e5699a2e12ad5fa486ba6b28ff8b2451e1acfe2e766. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3UY1900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa761770965186ff1bd6b9443ff9d5b31a1e38858b9e3c463f7483dba098886ec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3UY1900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043367b62d7c5fd81cdce773c200b7463ae756a5e7431c5f67df6229193fad87. 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/QM3UY1900324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b27737d8e735ced0e5ff76e2ac61c03214c8af2bc19c06d365b90fd8819158. 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/DGA062378100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d823370a35b2048145cb1d1953badd0d2f1c21b93d61ff52e5e3f6c49a99487. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9K2490224.