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 0x0392cb9d67c0e5c553ccb54f092f4c900302fd138151eb6709180b42ea18376f. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fe092d0-da59-4c3d-86f9-ba08163c5eae.json and https://artists.proofprofile.net/proofs/artist/0fe092d0-da59-4c3d-86f9-ba08163c5eae.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 0x7cc2ab006de0b3f8ed1df93e82eec09bfd0911e25c87eabf62e262b96d9fa4b8. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GXF9Q2448851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb6c531490cc713fd6e8d7814d45515282da44052465cca91462073899f5ec8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXF9Q2448850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa851d7c9e905e6e07e1cd666cd9737d64653e9c8314864441c8f057901b6a2c4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GXF9Q2452953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda438f422afafb79cff6621c6588eac35b92a5d28cc78a142d28fa0d61bfa2b. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/GXF9Q2460487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501ddcf5e82848e1d968151bf3987c21c1b7d9012640d0a28b23be7dc9d436d8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GXF9Q2460506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b0e231a9e2b2af0711b4e8d43f2bfc3f05047fa2098f9cc42218281de14da4. 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/GXF9Q2482141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa351ccd185063df59c366d20c24f3a64a9582695427665cb10e38e9baf01ea48. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:33Z), 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/GXF9Q2493807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fa0d71121260ab88b1d61076203ea9e674a1676b6c3bc5b612d0869d7f1b84. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GXF9Q2591774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139071651ccddcb15705f2ee1dc91ebbc40e76ceebaa97eb3e27bf384e2cb4ca. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:10Z), 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/GXF9Q2597610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f53d523235f4008d9aa0fabed9d04213b5de784f4af1ec3e4fc56af58198217. 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/UKXN22510147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675c07df22e608dadf8e87ecc7ea682f5716ca8de8f76682f58d6b6af0942b93. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:28:26Z), 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/UKXN22519058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7197b3f901a9bd1febbbe520aafe082eb14c1c9071c0e8cca065a881b03e76. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKXN22522680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd320db561c022a3f3dba5aa2333af5fe22adaa639c99250ebec7fa779ddd2315. 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/UKXN22535953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73968fc9a3b7e7388059fd7df778018b341ef8bb39e3e25284ea816edff907f2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKXN22532902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0108ba00dd667fc4c548a45f04debe5b197e76455ffac1d23fb0167e42653237. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UKXN22545605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd1598292592e635604f66038e0612917990bee4c4bb5431119919dfafd290b. 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/UKXN22548787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eb98e0d592d8123bea251010f91b4dd14ac73e7575c9a43db8a4586e885586. 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/UKXN22549576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4801a4c015eeae75b767552ba75fe6f3a3ab74eaf758a3cdb87b96ca092f6f74. 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/UKXN22559838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae4a7dc6febb109767585a7e135dee6ed62ba75649ed03099d516f3449940db. 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/UKXN22562498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6710623cd5525709f362ff58c08c80b147e4e48eff18707956ac87d0ddef7c. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/UKXN22563796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a888b938bedbd0c5fd8dba857f623b94af240a9349ee64938a6021325257959. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2543564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5327d06c85e85d6351737465f312073a36f75085e71d2a38a45d0f90dcdc44. 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/GBLFP2554863.