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 0x008d2665e659eb5ebaeacff42a2d9bfb7c8b57dde3f76f2daa6688c095f448d7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0959cc4-5ad4-4f2e-b746-302c53152911.json and https://artists.proofprofile.net/proofs/artist/e0959cc4-5ad4-4f2e-b746-302c53152911.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 0x65ce14dfe5498a4b560763f359858da14aabcdb6b75eb7918422b77dd243a861. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US3DF1952436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f43b448a2f4cdbcab7d78b67974e91c64d581cfab086fe26b92a5805e113740. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/US3DF1952439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25276255ab561b4a76b1b396dcff2b9cbea5be5b14e81c40c3e0399657951298. 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/US3DF1952448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a32efc66a5b09ea5a2493ca0c3c65ed0df06b7a71eadeb70867659ce7394ae. 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/US3DF1952450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7871a8a7fea40c4857f9ac78ffbeb4b3cca259b1fc0f5f583bb3570776b6b7. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/US3DF1952453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173f70306f2eeaf567f5ab8cedf30c2b214f128309b824903b68d562496c3426. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNJV2375151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e771713ff1f3bf5eb0cbbef785889531684045107d1a18aa03afe5e9028ae. 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/QZNJV2375152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2e4906ffeaf334d2d607096888d61cc7f8c707466ffc40e20ff01ddfae2452. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/US7VG2441931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1174cb76163c01e8b8fe988a010853ac7a4e3cd95402aca7bac4823083606215. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:13Z), 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/US7VG2441933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c69f8b8f6772df2798e85a7fa2331915b58c55724ec055593e4f3855c04c181. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:35:47Z), 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/US7VG2441934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4b245815c49eed649feeb73f6420bd8a6c725dee6ea082fe7ef7c68cfd9030. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US3DF1952396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6acbc0a2defdd45cfdadff75d4c384b82049ffde9bb05a1bd190d1170f37a0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US3DF1952397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea6c16024a65ba8748081a04d507d92b325123fcaf7526f0cfb0bc391403ac8. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:02:56Z), 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/US3DF1952401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcc0f03c631a07bf6294b7cbb7b37c6f17fb96cf708004049db10a572cec360. 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/US3DF1952404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411b50b26d49fea072ee622319ad59fc0e1dedd26756d7aaaadbb72e6615da88. 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/US3DF1952407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a74af8f49abb5a3ae717b5e5c722dc2f2408cb3171503505c19e2edf1a2ef67. 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/US3DF1952409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5801ce59f56c40e478d4057cb13f8fdfa13891cd89d2dbaec231d2f359da53. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM82322659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f2b74c4356cdb71f5163d5f5c5ebd2a468414f295969e8a669368a0a2d64c8. 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/USHM82322660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1fe29d1daf08ebf6549de820aa2e9604cd76de3255593d301979d8494e0d83. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:19:32Z), 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/USL4R2257453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892823b534d1aaceb32ee1a379a03f8bc64677f1fd4bb95b5fb1168b4ef8dc43. 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/USL4R2257455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d3b5e107362296bad24bba04cee28597984b85813974cec24c95cdccd1dc4a. 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/USL4R2257462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3486b0b57554883baaefa620f85780efa3560175ac87087aac979af1585e6e9. 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/USL4R2257463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff8e3605c5dc747233de0b23b1d7a8dc38ea5c1544a99ae80fb123f2e3cef4e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:51:29Z), 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/USL4R2257464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb8077f41458baa86a9a63e00ae6cdb8fb25a2f63a56b517a6bb76591096dd1. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USL4R2257465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74723b924e15f6efd355170ea6932b603e69559d940a8ec077bdf9eece9952bf. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USL4R2257469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a42b51226a0c49c1e9889c89ae606ed114c9ade871cb8101f89c01c992e86d. 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/USL4R2257473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993db1b87cdf34c17c7e1ec66b6592acd22ce761c9e754c562f55ed6ff7fac60. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:54:20Z), 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/USL4R2257474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33d1f115555a06f628bfe71349ca1e5af7f4b48de7827b89dbff2fda1f094f6. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USL4R2257475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cdc2ea2219b66414b734c7f136e1872239eab56564afa4c2af3c3c38655f91. 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/USL4R2257479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf228f7ee6734bca28929c99564755c8603656306ac05e226d3dcf23d1330c2ae. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/USL4R2257480.