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 0xda0952322d524bbe726c973ce38a8b8e2414012ad40cfa2050fbea89a209f6c0. 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/1f7fa293-0d72-49c9-9661-18aee47f2ae6.json and https://artists.proofprofile.net/proofs/artist/1f7fa293-0d72-49c9-9661-18aee47f2ae6.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 0xc096d0e69d60af38cfa893bae93f837263dd161a01bc2c202a765255d0953e9e. 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/AUMEV2144136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5849199a180d206fccbf4b6df1b698b3c266575e4d649dbee726a9cd66d44a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUMEV2173040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacea13c16659ebac73206ff582c806128af3337db1dd6551916cae70413e9c6d. 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/SE5ZV2123101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b65b939137ea857b1656874a31e0e5c133bece85b36fd03fe3ebdba7e79f3c2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5ZV2229501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1294d7369e8570bdd69de19af490df1df28d614e61e5d377fcba9983b3284cc3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUMEV2275354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd4d94d383870f0587575f5bfbcc71aa358095682e75dd465ace495b08a92f1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUGBT2219653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d2e4fc9b530543ce51716ab77d159e5c86008ee7d8f85dd9a4e64ad70bc141. 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/QM6P42396893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aefed0a61216e4b5d619e417ed2fb492deb7438d95f2ae99271cfdfc099af7. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QMBZ92335449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035450396ead06b02837bfdfc6bfa7b27635dbfe84630e7acf1d6a6bf551cb36. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:35Z), 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/QMBZ92392073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035450396ead06b02837bfdfc6bfa7b27635dbfe84630e7acf1d6a6bf551cb36. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMBZ92392073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10583e67330a4b99cfb0fcb88f1566dff8f1b3b1fc37aea86302a87e427a9e80. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:47:21Z), 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/QMFME2328938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d002688c5a57294b3b83d51cc75475d27888670b993fb67a9be1356748df88. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFME2365610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb83d2ea06ed39f1940e73ea9faad2f0ba54a9b62308425577e720cc65efb6b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME2365781.
Aemeralds presents: Library Aesthetics, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff28f1649d2e35ced33aa440055113a2679e32f189c2938716ec6e5c40373f9. 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/QMDA62215580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53497fa11b46ffd904a41bf5e2e26bcd4b74cd621d851bd668d3265624e28424. 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/AUMEV2468398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a94b0858d7e902346a577a5dfe3f8b7c320b7f932958d46f4f4a84ee98fc62. 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/QM6P42444408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a94b0858d7e902346a577a5dfe3f8b7c320b7f932958d46f4f4a84ee98fc62. 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/QM6P42444408.