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 0x9a1d7031c9357e3c957af124bbec9805752b23005fe19dbeaa3bfabd70853da1. 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/158f7643-605e-4ab5-ac75-238799c4f946.json and https://artists.proofprofile.net/proofs/artist/158f7643-605e-4ab5-ac75-238799c4f946.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 0xf403764ffedf21f143e3dd0c549437ba5535800f9221c62a361f3dac9b47a308. 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/EGA251613133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef1c139a2f338c0f9546caa8892001cdc58b2dc9652019ba11e96be51c8737e. 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/EGA251613036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e7d64b40638fb5ffb569337903cf998bb3349eb85ce516d2c5344797959abe. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/EGA251612971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b39705ca13537f941ae52ced3d379383b6cc56333795fbce5d2da6c98b005f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:08:07Z), 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/EGA251612968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4262551fb3b404fac1583b670ff0398673c00567d1369928bd75a875cc69dd9. 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/EGA251613280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea994181e676dd4fe22184dbb3fa6ecf9e63b7fc3a3fed82e6db24978fae10a4. 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/EGA251613025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452526fa5f4b590306fec20985d8a1c2f14f50e14f56f68a74fe40c3b08cba58. 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/EGA251613002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d79ee74f6dd721f3165c220b2da39212a553c802f57c53aebf697d220026f2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:10Z), 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/EGA251613011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c400d1ad8203abc216a996729f5034f099a0f5ebf062930b5f1cab050a9b9d. 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/EGA251613016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80140832cebe2d827e03035d2a54cef8029821d50bf681773dc8f0d59ddbc146. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/EGA251613135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4650bbd949936c3426ec9f49104be85993a78a4336c8e6c423124547be3d7b55. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/EGA251613137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51927e11e798e5b278cada5f75c286cb74624f4ad5e89d17d08cf2fdd2294cf6. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:34Z), 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/EGA251613388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022939b0ae5f680cfdf67f9e80ac1bc80b6a155cf20f74b428a915b76bed6ea4. 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/EGA251612986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d53e851f47c3c00e12008bad087b4bcd68caa7bfa0c4b4037c184ce777c9dc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:48Z), 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/EGA251613141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1943f35071a503f4df0e651ed5b9ad4724ec84722c6e51b186d3fac88f73128d. 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/EGA251613000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bfc26db936666ec20bbe0e55e31574beb59a1844e30d9514d95b99909e93e4. 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/EGA251613138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2fc1692cb68486f522d6fc031d9e96dd2d98a1b8cbbd85e8ca748b4286b26a. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:26:38Z), 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/EGA251613131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb20dc929bfa5562d40ccd72c3ace89258b347035eecaf7050c43faf413a983. 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/EGA251613413.