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 0x58adba865c0d77123b7af4d68b375de00a3a6f5b80b2aa01a71dc5728a7b817c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0897ee9-961e-408c-adb6-e3294bae97e4.json and https://artists.proofprofile.net/proofs/artist/c0897ee9-961e-408c-adb6-e3294bae97e4.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 0xfd0906edd27bf900e8ea3f860510d349f9918f33690f75d55c8bb28815777bc0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:31:31Z), 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/INM8T2400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09642024a2d73acaba3d97c39f8de38939322ffce661d0b2357e86727569352. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/INSB92400541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57795c5cb4556cf509fbfa2708718dfc7ea79e4ace970f2135ca3327bd041749. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/INN632400812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48760e9024568fd2135f4c30f0de6a3099e7716c8a755a0ca85d8be80e3e12e3. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:31:17Z), 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/TCAIQ2430759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df573f5a59ec1efb1e69ccfffce6da1526c37a158f38dd38cd02de711b3214. 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/INDF22400824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ee1af16db3e471939887b5adcc7fd6cb681bc73c7ad7024132c309ee8d44bf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/INT802201760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e7e7c90027fee1a4e2921f32ade0cbe910697a92f8d1a00fc8b365ab1029cf. 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/IND832404537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbdbcf8ea130ac10e8773c956af80db6b82452488445bc10db83afadf1ddc3b. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/INN632401316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb229b6eece27414827e3976b0e9fd876bdc4ae225410e1818b5253f4e95937d. 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/INT802201777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6675f5f60082964f0d4497c35431db4b2846d4fda30d137316dbd6275dcd9a21. 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/INT802201786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe939237bcf086cc5eb06cac0cc5daaf4c81e1e115d936948f9f1ae41785626c7. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:59:13Z), 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/INN242432204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908ca723167f5f6c755102c1c1c2e0565c6255ea75431779c71aca2abe976b2a. 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/INSE82211182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799dc32add7988904e89fa4b2bde5133c4ce4271355e92fdc1998747b3c060b5. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/INN242501520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd12406890fe1302da55a604faefcc6c0ccdd8546b0b172ad5a68ff6de5fd4b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/INSE82212349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9611f560cef32774a0231484e46e630ee0a51c1f110a7e136756527b671f112e. 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/INN632500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86991448183afe05f3b2cca1d183044f143da41e5324afb5eb56b1b1247b6c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/INSB92500132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e1871ea6062c3ba23755880ce0191e745d0058e467151759674b043c50a1bb. 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/INN632500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbbec6c8b5c207b2e82f7f9852244e2035cdac1b84894a69ce63e3375de3781. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:53:46Z), 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/IND382506775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626c23780adf9cee4bf12b47b54c8b4a85150828c729f92065e312712d8ef840. 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/INE182572213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96025eb44b450d0d1011e3de3db51166a0cd35501cfe4be1fb91ac0e50139cdf. 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/INL492500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb84274fb8142782f7bc081dd850efcffd46aa90626a987b476b5277b53a59a1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/INB942515526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6568f293aa5d676629c7655e1d9ae5107c241d350295b51ea67a5c5dfeeedeb7. 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/INT802202161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80152df5637fee717524d6317015fd17ac5f984e5617ee7507712828f7dd3817. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:23:26Z), 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/ING212529618.