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 0xc67d46c4e25c4cd560dd2de9d1913c6c764e80303e7c99404784088230a7c080. 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/599650f7-6695-4ecd-a479-ea133cccee07.json and https://artists.proofprofile.net/proofs/artist/599650f7-6695-4ecd-a479-ea133cccee07.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 0xe00dd3300fa56b3ba936d5415aff6e5ea0c9cfb4e250c93a76ca952b7f784a62. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEH741916741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe407dc9656ad78cf5dec68250e2f4966229c59f427e20a9e556988d071c3f097. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEH741916739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4691a3ca0fbc5a476304125731dea20fa8adc85c89792545b2bd3378f4594003. 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/DEH742036031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16f85437327b87d7f408214b3ec3c97569cfb95951b26ef1f0afa3f596a4bdc. 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/FR26V2054283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a4e7a06f35d09a6379688be2be637fa5cd84c6cefdf1df5053ea9d81b4e646. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR26V2054284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc998dbb5df5977a75c3ba3626b58b6a51db9846ccd87c7002eec6c77c4dff08e. 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/FR26V2054285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb36212b88282202fd0b5fcd93ef5df63b8d02e916ad788fe2195c2ab5909ae5. 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/FR26V2054287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa18910374e5ea41b32384ae8f67d30ca0f44482a357f535113b842bf5590c5. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/FR26V2054288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20431a719b48b82d521a193c0dfc3e485575e7fd837a25469a2a3361fc205477. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR26V2089211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec3a403a9f686cb7f75b53442a45a08ff7eeb43c1647edf4ebca9b133fa3a21. 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/FR10S2118985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ca91e7ecbb89a76b992d8b410252c3cc07ac4c8c7a124269db88e38a250caf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR10S2118986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7d0852cd83e1aebede92469f16acf488c6679eeacaffca81fef3381805962e. 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/FR59R2127646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8847f397015a00eb0abd2c5bf48df93d930cc57f6970c7fed67c44e85f69fb. 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/FR59R2192246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838dde914c6ab00709bb26490ef98428426253b79f1ef7921b0dfb0463b57666. 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/FRX202115342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de90d1921a9c87c36a4f1f6d05a68be24523295bbcb0c253fd802c25197d5a5. 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/AEA0Q2047865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6bd11e9b941d278c7fb6a694b6966fe9dc115ff6d4d8064d7e457eaed9ed19. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX452122653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925f0b515e7d162570ba06e5611fe3193518dc5d41e9bd2a440a5e2bb8e751c0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX452122655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458af7b8d54c11053c3556be339c387dc4cf53a2130c3fc6fc3d2903a30d1d09. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX762191991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6e85c34e30a3c17488a602cba044c76f44ad05e0467ffbe93323c76cc12ac3. 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/FRX762191992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7c9d0846b0fa2c8d45df8143490819034944922cc7530c011ccae6c946f188. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRX762191995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f0311394035c23d9490ebe9c201cbb7874a1de97792cf76ccf39551840865d. 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/FRX762191996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94050ceda474918671069d82d8066db50000535ce186ecdb7b6bb7572bf04df. 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/FRX762191997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fe7eb3851e33d5b5750778a3095e5014f2e0154866d06b45e32a01a8ccafb1. 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/FRX872157436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3165d6d9ce2c78ec34058575da886368b766569dc4ee516d74420d98141cbb. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:35Z), 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/FRS182157132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906a4e1879ae79707a529ec59611a66eda0ec756f8fa32c3eecfe1759706a38a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:54:55Z), 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/FRS182156286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1374d460070e1d003b1711da6a3fef4a1759a89600356f4b6e84ff469adf2421. 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/FRS182156288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f838d5e403dcf05f5aa46f6c9d0f7e7671bfd62c5495f27f49941017095ce5c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX872297997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b01fcb874fc79289286ac1d723cc20d505c462eca565c054fc0dc25f0c23a76. 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/FR2X42319617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca7cc62b0b61203e74665ec8cfe64125589d6e4bbcdf0c9f26f5fef1fbcf6e7. 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/USLZJ2304202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa636711a3f5f12723d68f0f5f6501528753736a93c58a17e5250c4e9d9e1b421. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:36Z), 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/FRX762329421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf464bccf5162fb9d9ba5a44096b5c7ec6fdf674b9f30f030769424986ebb24cc. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FR59R2404784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83fe31daff03283ff4da298273da94ece748984e90a9f98a9fcab42c84fa258. 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/FR59R2404007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d91ebd18adb368909665b5cd1eec630abb23549febd7a3af64ccdfa442dad15. 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/FR59R2430598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4f58dd02110ae9ec109d6022a6622089bbdf813fc67b22fe227ddfab83d13f. 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/AEA2L2499589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca27f19bf87d3ef6de289e790bf123cd9024f3b6b5dd2d024d04f7d5da3c85c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/AEA2W2581242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19054ec788b95c75f34811a0f96929395f0153d8b38c0328346b63d08429c431. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUAGT2540169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62f25474f2417dba2cba65f49ec0b04b99933517d88ecc2268ee7897c073f13. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/AEA2M2519427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36008b2fe776ca9554a18151b155925a476841e7b989bace3756aac492515c3d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RUAGT2542910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aff6c618ec554e5cdb0d301408dd9f832b4d944fcbe57e88589334e5ec1e9d3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AEA2M2548947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa661fbe13d9803217792e266fd72e32c68f7c81c1029e9fcf310691d7018875d. 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/AEA2M2549011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae57c8209b134bd5d3322e175b319c0f3e5469c18fe00bdf889372cf5f73468a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/AEA2M2551528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f00cfaf31ce4f6372e18aed068a6f3c4034f2b710f84c20a3759726252627b6. 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/AEA2M2558442.