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 0xd82e039835d28cb472eeaa160f0097b87bc0f09ccd3cf5543dc837c2c4e805d8. 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/2bf359b4-a5b9-4b8c-851f-65089def567a.json and https://artists.proofprofile.net/proofs/artist/2bf359b4-a5b9-4b8c-851f-65089def567a.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 0x01e5b3401dad82f42d7150bd937ab8581ab57749d6ad7844fd33f7ef0a27e892. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FRX872567926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6fcc169ffb11759c16e20d213a094f1245e54fd68a2f549dbf340484a74b63. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX872567927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa4db395b56176f25e8fadeddc7a66788c7396d6e90b67c76feeffd7401236. 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/FRX872567928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e438108b0122898ae06c46eb22f6d65195c1ef5ae9361d2fcfab9560c346c0c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX872567929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5b41ff55211709dbdbad4438e0eeb5357f863bdde54a837693e78fba66a20d. 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/FRX872567930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef10766695b26763a873f909897192ad40ae3bd837b08c8316da3950e4469cd. 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/FRX872567931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721fcf7d8480dff2f2dbab44729a04facac923f07175a940f68e2840715a2b1. 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/FRX872567932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb832543fd0142058fec079dd4273a242876a0203c816ba5a8d8350801e106b9a. 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/FRX872567933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6200adb086c989216e08c254a94c01b31fc695a14be3393d8c8305f2cf1599. 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/FRX872567934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2aab55c37b6364d7e4b214aa50104c727728b77f2cd7a40df6e3807377fba2b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX872567935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eadb52047d8b9875b963063ac5e8673a388d966c607e2936b399dbe7e7af1a5. 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/FRX872567936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7606b558a6c2fe190b8bd6d3c2d7c2ce5fbafa7d9653f13c9317f91ce1ae4fd7. 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/FRX872567937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efb8819d2bd3fddf7d766b163e69e681f6f271225115fb986d9ab11c21e23ea. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX872567938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df6b6c5237d0c8a8115af8e1365425d9c0b2a1ca8363715e118c88554ad67f4. 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/FRX872567939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cad93cc28476a3cf2f783482f1cb3d1b21c88d2533dd8cfd7312a3cfa74c180. 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/FRX872567940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4478d066394a4910a5f8c0640ad032a3ba6030ee4056c84ab46f0aa577f667a4. 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/FRX872567941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf7e8c905c3350b4f3fc8761a591e80552fa7186d9e949c57c5020b9e2b7c57. 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/FRX872567942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb4009ee4e14c682fa123c222d036dc6fb66876806076c0f585edb36cb5dbaf. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX872567943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c1b5b9580255bf7305a30849215c7bfc5d706f7d404445ddf1c8097885d825. 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/FRX872567944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fb5f0c6f698facd80f229696390ae57a34ccbced3333d13677ad001d72c7ae. 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/FRX872567945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c9b99ceb47588f9793cb2bae8ae713b900f44b72f99acbbfd53ad992a1a6ba. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/FRX872567946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5393cfc1ecaacaad5ce7064f4b286b7ea9053f64d913b6b03cf336d4b1c38a83. 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/DGA052533599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31567a0121b2c01d9a4efd3bbab8fcecdb20a10e8cf742d277158412a94af5ec. 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/DGA052533600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58be537724db50b94b70ce9225f3395ae308056f3a2e582574fe5ab161040cc7. 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/DGA052533601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9aa0cfd7adff96e6d21600c2c3a3b1cd6189f8741745e5c2de799245bac23fe. 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/DGA052533602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf745dbccc6f1931435510b87c7615208f7030489b75f2167609b10e0999748. 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/DGA052533603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493eb3955c5878d590fbe4db0285effb87637ed42d5440743eef5aa43d7bab4a. 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/DGA052533604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7cae7be0df7c6507446f5809109d15a1e8b7cfc0a2cd4d7ef8771b9b32e5fe. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DGA052533605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073b94c3d6d6728e78d82fce1296acf40a78ef3d8a6e2438b0f5565ee7edbab. 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/DGA052533606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1085f6658432b5dcf77c6bc36062d499d9d52036133b13625c746993bf56e5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DGA052533607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fdc5abcb8923799488105fb09c21972b5a517dc1207a54fcfd5c6926fe4bdf. 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/DGA052533608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa32e1140e23462c09db445ebab99891b64d31d90f6fedb1faa14c9f52ce61df. 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/DGA052533609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4badcd621f164cff6623c85b9abd673817fd86a6bd9085af0334b4b0a441719d. 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/DGA052533610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12356b3c7a457b5be1f0a7acfa53d11e1725132fd079cfb6c8357eb9e6c15066. 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/DGA052533611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4d4c0beb5ac7f6cee4b5e93d2f5aadbe347edfd20c86af6c8cef8fe274ff7d. 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/DGA052533612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295ee0c9f7bba122e5841c94b2257ce45cbd427f68e584000a1c955ad4be2245. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DGA052533613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65c1e172d2315996d2ab5d25dfac38376f59affb0f499e0e3ca3a570c205adb. 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/DGA052533614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1b9e38b78410cd316ee6fdefcf81a0c5b85265c99a493a57976b78e82a4578. 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/DGA052533615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dd075067c445c4eeb989d11d4f50e9dd67a35257c1254f98470d0642a75a59. 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/DGA052533616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd2fe48c81b4c4b8e169b689c630cbd16ee93e81cec7d9852220bb7b3f54397. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/DGA052533617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a98ea4fc121f1fd3400195322659966ec32c8f4688b6ad6f01c82b5f4d1e4e7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DGA052533618.