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 0x086dec2f18052d3ae62c56a2553d28cb5855f9715fc63f6b60dc81b43674511e. 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/b7f1e5be-8e65-4269-9ee8-f049ba36bc8c.json and https://artists.proofprofile.net/proofs/artist/b7f1e5be-8e65-4269-9ee8-f049ba36bc8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Forty Six Minutes, Twelve Seconds of Music
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 0xe1bb6c90694b0cab47aa8a245dfccfaf29f22bf06ee39e7ebdb2bb4489c9561f. 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/HUB871000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ef2e698b97cfb3133c625f1a32fcd800ebec49e45288889794699d5adbe3b0. 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/HUB871000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd015e08e2c1e14fb53c1cb8ef41a7ce2ff447e62b76ecd894c465693a0293fef. 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/HUB871100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe436d08d9935a816aea7fe50b363c952785a260c71f3c855f0a9689620b38a16. 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/HUB871100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c73f8796aed60dce0f982e773cc85482ada7f9b9700e1e5494df5ab9ec3063f. 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/HUB871100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3844182ba8a8cc1452d3020c6713773ef697faf74b6b882a006df0a88bce9151. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/HUB871100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f8af87ca33a06324c6bfaa7c238064b414a208fc0ac387db5f2f9c5d285e85. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:23:37Z), 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/HUB871100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6dffaceba21faebe8794c616464a1037a8b206948a328c5ddc8194180fa668. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/HUB871100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b6d5c0513fa4a2e63da9220e8e27cfdc8470c5838f06af2872971939808e02. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/HUB871100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30cd43227548048b02e3929345cd1b31fcb4b4e78c8a4a31397a59e2a0d266f. 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/HUB871100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261db1038ed15365bb55931d0f2e6ebf4eb0aa942c4a308f3a13ddab646ad563. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/HUB871200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf091be7417901c8503fb3d77e97a334ce38776cc116cb8bc6f7d2dfc3f9f86. 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/HUB871200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef925f86557c1d097f52486f70a08d6b952edcfc1223bf40e547be438fe5b5a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/HUB871200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4465bfd0ad2fde58e9595bdd2e5b72d9903d7c084ee0c8c0b6d74bd41ff1b8f0. 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/HUB871200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc1645c375aae03ff03d1673ea402f602d89b1e737cf3309a59fa1caca75cdb. 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/HUB291200469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26989b1d8878fedd7d1676470a27fa1e35a1b3c34b4d7072ae87492de8e6c7c4. 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/HUB291200472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15699eaf52734baf8cc102b604ba683ec11cc28d56c1f5fe60d4e64e48fb1cf6. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/HUB291200474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3767d38713e135293782221d8ffd2dc5d8b14f01d06debc83467ca1238ba6. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:09:17Z), 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/HUB742090202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe750e17d5c0a320fad7ea2faf5640a0b740a10534c7f2bc034cbe050d072be6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:00:35Z), 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/HUB742090203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf423829d190a7e3468825de0b1639cf077ea6ac716438900373665e93cc9f191. 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/HUB742090205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe654b8bb002a701c7adef7b1caf0b61c51f7bdfab0d4ecb1dc70cf21fd01c925. 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/HUB742086205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcd55725fdcccba570d9151ebbcc876cc3a38aed7cd48af6c9b725fa5333972. 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/HUB742090214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643246e22fb685a24fad78e381eb406245d524234c4d845fab4b4489bc5a6f0f. 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/HUB742210312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232567c683d012e8139f24c1cc70caffd03bace76539d0459dec9f90bd52a653. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEAR41351709.