1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x94041b6cabc649fd53fcb3b3895d53f1c95cd7a4f2c6e7f731cf14ab9d4ca0db. 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/c0b628e3-e330-48e1-bbfc-e175b9964667.json and https://artists.proofprofile.net/proofs/artist/c0b628e3-e330-48e1-bbfc-e175b9964667.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 → block OTSBitcoinBlock must exist at that height 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 0x9777d3f03b24210c43dfa1f306dc43d317229b9c24841ce0f28a49e1055c4888. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IDA160700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6254c2fc4f1393fcec33275d4d9b13b04c2f74dca0a6e22e5e8ed5e6cf249124. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA160700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8912bbad5641b8c6f4caa96a443a85f1df93c6a540d033c10ab860da9f766c11. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/IDA160700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399943816dd7cc2ff1e7f88df1f29c9d1fa784138b967657305d3bcbb2121705. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/IDA160700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69c3c0f72bea3b3e81cd975afc18cec5a48bc5a7da8b0441b2ecc0a3ca6e5c1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/IDA160800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5feb3964f928b6edda9d5098061b501eb4b0c08ef033451bc326a100e076f65. 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/IDA160800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a912d426b54171086c9eadc73dd1621fbcf8f37c94fa7336b50141a1c9e4831. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:07Z), 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/IDA160800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ef4f6fb094f1e0e22d2240b33f0aa4677a02142507fd360adf841974ee44b7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/IDA161000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7d427d20f45c96badc671d9727ddd2984d02ff3d24d757d5cc7f05d13ea70c. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/IDA161000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e120490e78ffbf34703341571749c443c691e1ecc7529ca952059c92ed563a. 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/IDA161000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b6558f74cea37472ce284243d70dbe91102bb10b4a80cd91260263400718db. 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/IDA161000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae8c9efbf4f4f1875510d24cc66ac9d73c033a8f06bbd0e2f5790feb09434cd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:05Z), 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/IDA471309001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b465a9e7ce8b79edcc92b81e715ce6fe482ee63fc737d86b33dbbea7dcc697. 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/IDAC51500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd101b7e368e3b4116d28db7309e7eaacd76fd23a95ee0fac2653bb9a9ede558. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:58Z), 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/IDAC51500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c46460437c21a2930ae7b69e6220f983b17082d0cb2b0097d6aac514fa93648. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:03:11Z), 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/IDAC51500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bf8310a62eb828466785c012a6b1ca83520deb3aa14ff3338777d3da03ee48. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDAC51500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c325ce16bb84a7aad84369062cff9aade6bc3f0586e732f13217ef0d570f24. 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/FR10S2048618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b047b6e1c431ff4d4c8604a492a4ca9c24c8df2d7746453fe576b1eb486508. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IDR012301908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423294a67a105c2e7e8ee5617c599a4cd09c9dbfe59cb23a74df3f318139e982. 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/GXBAV2344906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a86584777acd4ba45ba993f07e769ff01427c4d39e4ca66c16dbfe87dc01a02. 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/IDR012402784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2198334f88192ff97836de00e4e936d163c12ef6a733b3ac495c379d519ef8. 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/IDR012405715.