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 0x4c9a1ef7edd2c8e327c106d1a242275578af73f81e60725a99ed68809e0f6a0d. 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/5426b495-9bb7-424b-abf0-eba48558a3dc.json and https://artists.proofprofile.net/proofs/artist/5426b495-9bb7-424b-abf0-eba48558a3dc.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 0xbec77d47f30556b7fcf744b6c79c4250194191baf3351f0e8333ea62973aa89e. 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/QZFYW1959226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c351eccbc15f6246826e87ab8351277693732ef9b5767f10194bc10eda575d9. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZFYZ1994468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33f527edd1e171532b421cf5a5a3a54ad7fcd514aa2f20be4eece5867fa090c. 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/QZHN31953841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2e9b429e3ba0ef54648397c2812107460c4c76f8b322cde2e6106e686e9d8d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLRD51966097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05a443c3f8c9086483809636159a5a2c23077d1ce02d5b920390cde20f7b093. 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/NLRD51966052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c34750f91554db8220d1d268622620115fdc7e173a0cca09c4cb8d3d7774c60. 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/NLRD52021926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c73628568c072430c1dabb8b4091e0612181b72a3f2f4e4c2c3cfea1c89579c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:03Z), 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/NLRD52023845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2209867b618e4139a6288424211c3f102a3ae9fa9b87f73608eec42fe34cce. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/NLRD52023846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830aa6db5fc82c6bbfcf7e4ffb58f7e3c08746197bd2b06f961ff453976b3639. 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/NLRD52023848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51eb6204c8a6d588596d0c7022b9198c29f90fd9ef4f42220a195453dfbac9c3. 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/NLRD52023849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab13837fd05cc79edd3963dad44aeaf38a9a294145eb73870de3e96711079cd5. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/NLRD52023850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15339253140d71e318a0bb36be3ed875cfa969580a2b479280177238e3da7834. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/NLRD52023929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de817d3dd649d3a44311bd96ecd00a45c81da5cee774967ebcf203b56710c89. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NLRD52023935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e80d386fd4de1424414ca8b8afe81c36959ac35745a8cbb92e371882de5512. 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/QZHN62206415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd539d24c7ff3f781bed52b5cffa27779ec04c0ed7e6d7f1e12dc6a6fb4038c9e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLRD52052844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9815de8b212fdd0eb59bb2d18d62d6d84f1487b8c0d1f6eacc937a7b8cea7c54. 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/NLRD52052845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc5ed170d81f6922fc4e5a2e0b2a048498d63051950cbd96f8d7d1190ae8f8a. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/NLRD52052846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2568d862100cf7970d87abcb8576b6ab89b79015016d279d10682307b7eb2d50. 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/NLRD52052849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055b61d903033d13f22a9714ec6fccb5ef9eebf3c858f8f4d0783f420f43f805. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLRD52052853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae1ee6b553aa4baa89796946d8154899b85723979be4455de43da6824fc0535. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:15Z), 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/NLRD52052854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9f4a73195add54c278a0335bc62fe9418e59ec2ddd206002d4624e90f180a7. 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/QZNWS2276152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d01fd39f614769b9ba4fe51eeface3514117604681b063971010630da49fbf. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZNWR2294602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1f559f968c079faf9205239f65ae69422aeb71a7b2328c997b406da35cc279. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWR2294603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7c0cd85c32ae1b161ae144a02fc8206489f594b171a58f11d037350987c297. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWR2294604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b96b88071dad9ddb59025ebaa9a2ab356795e6a9859f6eb9278c62f996edba. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:23Z), 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/QZNWS2276153.