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 0x2248f127b52e93bdef8b09eebb5ed1d9f093f77a3d8a85383ea098d88e6ca526. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1d642ed-dd79-4a49-abc3-62fcdfb24792.json and https://artists.proofprofile.net/proofs/artist/b1d642ed-dd79-4a49-abc3-62fcdfb24792.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 0x147d25707bc5fd47313baba2f155c6471d4099eec4be213f632f18268bf2611a. 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/GBSMU1982950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daa1a1ba38a4d9efcdb99b10ae111253767a322a3a2c441a4221f18857cd1fc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:11Z), 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/GBSMU1982972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e3e32e5abb2831e2b3a901625be9e61b23526368d5b5858e47db257982346e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBSMU1983031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d75110e2055d5243d246877aff56b9edc08d9bdc1c66d7b355be92c01c4f09. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:36:16Z), 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/GBSMU1983041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5c628998a12245adaaf2cd97665a017ac04a20285ce6e04c3c60fcd2598cb0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:09:29Z), 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/GBSMU1983059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aae81cdd007d29cf89120f104e22a9ae697529569db6798a7eed97c39f5501. 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/GBSMU1984068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4284ba685c79ce005c6f01ba3e3738db46dc92813de001cfac03e7d3cf32db0. 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/GBSMU1984070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38072fb09f331682fb2de6ac787af230392b8a18f6c561ce6996e31c09f33f7a. 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/GBSMU2939521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f365a3b70dffd3ac2abffdf1d5d4f32d652bd9596f7f146d311184144ac052. 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/QZB4J1804992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf285768abb4ea62e65ac42fd344540e2957590c99f08d5ccf179167b2c11b7d0. 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/QZB4J1804995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dd92976e7e192737ea27a79a3a26bde001fa54622be2b9d7bc6c1abcc52aeb. 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/QZB4J1803838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfebe2b879462bcb1584c3ec4fd6e3c1eb47eaccc405fdb994203227d9af27b. 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/QZB4J1803842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d3794147112ac0e40b0650d52fdb30bceb66bc60d08657367c043b3fd761c2. 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/QZCE61876725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed54bb37632ad4d028d0c14a5c83e170167db925c956ca4d1397b6d83b628662. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:31:18Z), 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/QZCE61876729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225841a16e1e35ebd8b527488f436432d8d72d624187e26503a0737d0355817f. 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/QZES51993907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916e76437add5e6e2afe376a08f6748d143c18e585b7c5231836b29b60823fc7. 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/QZES51993917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79523db91c056bf11fba506e72288390d62b97e99a9f62520761738b86d536a. 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/RUA1D1923093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0d68487a421a31eb5707438e35176d08fc91f838e7fe338b1472ab177e6c17. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:21Z), 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/RUA1D1928562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f30edf66f3726d9ff7dc797722b9c0b8fef5622dfea49f8ec1744ba5f02fe6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:03:57Z), 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/RUA1D2003846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff8f2a7bc5a2908e3ff4cd58d9fb4db8959f0bede14a773a791c483a7cd3aa5. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:06:40Z), 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/RUA1D2067758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4400b40d6f441ae2bf1c8e4e00e2ff8316864c90681fa200577824514b90e1. 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/RUA1D2106932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4a65cc9c1772ae6f8f9114e480e8dfb56f30a41e5352544a86b80e6e7876b9. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:23:49Z), 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/RUA1D2172078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539c1c54c2bece8ac6cc78ed39d4ea0c184153a3171de126ff0979af74b1478e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:47Z), 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/RUA1D2172266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13d278def3ac7713e921f8093ef7191382d9c199e30d1a91ee72b451118cb4f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:58Z), 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/RUA1D2204157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3226241e0322d29ee837b30b472ee7101811d47cbbc34c59d8b9886da65fc44f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN82279091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60958d1598898fac19f794694f61ae5d0fcaafc4c36d486e4054f487bbd3f96. 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/RUA322300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58181ceaa128c052c35a8de47c0e7796889b2997396d45ff1c31949c5084c49. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:45Z), 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/RUAGV2301596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1b065b39bc01df762456a1f985d302d0e770bbe7d43f6bfc57edd9b41fd8f. 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/RUAGV2302581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e06e4f9e3b13626af4b445979d3f3c4f6be1f7b8b0f59b774352e665b3a2de7. 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/RUAGT2347292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da8510b09c07e462210c6108af2c7ca591cd19b77eecb691b538a030e29bf70. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUA1D2493544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3159bd58e6ff80c3e4da632a084b9230d914e72e24663c9cd645d37c13c811e. 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/RUAGT2430705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c663ff9cbd26126677293dd4469149af96cf2901546a8e57666793868089ce4. 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/QZZ7V2456769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8376f2962cebea122d4b8921a3544cb2bcbdffe82b4f67c21d6086cbb0dc9c7e. 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/RUA1D2504895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ba7ec473006e1914311f8fff59767e6cab79bb8d21ab5b0ebdec537f57b9fc. 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/RUA1D2536965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa655f8944b925fbf750b29363c09c24799e0c5979dcf0730460b858067a0157a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/RUAGT2548892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e7250d210397c8935b9dd23b36f30e9897387d3b6adfb540e6a6e99c77e285. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLPF6718093.