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 0xd77b2d1cb15d70bb595f3e4b354e8e903e22da404060e61b28a4a9d9fa8e2bc5. 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/3e239251-de38-4a39-a360-661435ed7f14.json and https://artists.proofprofile.net/proofs/artist/3e239251-de38-4a39-a360-661435ed7f14.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 0xe8c446a1d6d7df8cfe233c21e0eaba9fd049d2d4307fc25863940b745b6913fc. 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/QZ7R41950715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23c6b44ac9c5ee0da230c81efdfff0d380697c4491286a66fa613fc9639b001. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZ7R41950716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628f0c9021be6ac53c3893a46429c124f46c6f6bbc0da0497abe67b3d0ca4adf. 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/QZ7R41950717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51af3f6ae961cea970742daa03ef6ffd2bd470b7787e8d625ef08c73a03f4cd. 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/QZ7R41950718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde96a2628a299817bd4b63f2c408eceaba50a8d71173592435eda86e587fa50. 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/QZ7R41950710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c4742fa9c6ffd63d27130e24d389a1facfbefda9f38f8fed7a9d3f3abe6b08. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZ7R41950709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ff12c3a0351cd807899def9d59ab062553a6010111fc299d045ef6e03aa673. 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/QZ7R41950712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b25d5986b7104198b610c129fd701580e4a843a71bc66b157a7ba8e6e2625a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZ7R41950433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59bddac3fa25257f8e51b2e17d84bff4a5fc46d872bde9cfd0bc1a8e8bc537a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZ7R41950708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54356c31f20f3bbc3c6bf834c6c91c7de5e59f7f3538d6a1df89f37a5a25dba. 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/QZ7R41951503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7edbec5647ea7f07d6ee1cc2ed3b6a7b48ad2e2fd28d5240031b80e8ae80a2b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZ7R41952103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a702ab0213ce6e754b5b2be6027b6bbfbb731f300fb7563f7711df3abe865c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ7R42052961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdd719cc253dc8f7a4542670d5e42dfaf0a1c8fa843ed31d4f54054b1736f4d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZ7R42052964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa498e94b45158022a77810036c632c967a5a5e6eebbd8f19f8321e209ffdacb6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:44:39Z), 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/QZ7R42052966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24eadd908cddb24bb6ae879c948873c409584edd8fd8b224183de9a2a7fd0ae8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZ7R42052967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db7bab59d87c92659bd30a9507d15af6a4225fe5baa86b6dbf7265470f7e688. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:39Z), 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/QZ7R42052969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa194a5571ce49822123f91daecd08fc78e10d3d4b7a38694977d40eadd5a65d6. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZ7R42150957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe364d038a6865b9ea56c010da20fef8d43b87835ee8732edbff43c246fadea3f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ7R42250092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeda78966c65fb81c817f0a5084f1e439ff1c76036989ed830fd834d4bcec31b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZ7R42250436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69372273a8ccb98340eb59c93ad631dee0376170894ad884ac0c160cfda190b1. 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/QZ7R42251464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b1d97be3f09bdc553a4abfbdabd8a8e464f96abeaa19112161e7e2055767fe. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZ7R42251575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd53c56d0de98a77f48ec5ef4f947e54365d7fa4677988632422bea8fe496f0. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZ7R42352045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b2a91bc87f44f999b01e3dd6bde69606fc0f985b54adcc6ad3c00fd2333a40. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZ7R42352047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd252e85fc46edeb715f37bbd2f0a208c182de886907e40a860175c442e85d5ad. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZ7R42354179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d2d9e7299fe72476336f616268d16c4aff945fb645eed8075b21bfa6083d8b. 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/QZ7R42354526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c2038df9f299ec2227c53be5a7c09a44d73b76d57667e08f466f5ccabfdd30. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM3DF2161944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41987430d34f1d086389eaf727e7dc6972f68becc1dac82c9bdd1d272d7cc8cf. 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/US3DF2206884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3ef9675b4f7694556722069add068ff4ab6e6fb41132b0e6300878bb9894ce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ7R41950713.