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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dc92171a7c71fd51b23b3e3547f10bc96852b1317b617b6a7fff60195ce4c6. 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/2aaaf78f-c2c8-474a-8850-ebd1c43709e3.json and https://artists.proofprofile.net/proofs/artist/2aaaf78f-c2c8-474a-8850-ebd1c43709e3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5052cbcb83dd2eda1259f8a1aa60be8ee90559e8e41b3cefe2195968d2fa662e. 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/EEAA10010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359bb2ff52d127328082e4aa26cf77cf4e9c30506320ab11e11cb7e23c0a9a8a. 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/EEAA10010009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc04fb3150f14e1fe6551a6455c1c780bfebe1b722224c0da2ae5207131e244. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/EEAA10010011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699bfdf3a960b38aab0d990a97b098f281b889a1edd3341966a00ae87c5cbbac. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/EEAA10210010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a683ccbb1a813ecf4dc37409656f15b9fd506e093867dd96e7824a08c785b2. 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/EEAA10210030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49609ddfd5d52e8f3e41f87f13a0a9fc6b5ce9fd4938a67b72f0eb492ed98d51. 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/EEAA10210040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c35a2a6d2f9a7a985ae2b4a36a4c282c97e0b0d7a1dc3caacd4e211f6aef76. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/EEAA10210050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd985883454600283a8903dcf03dbc0ef57dfa8b6d99d939555e8c608e1654f0a. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/EEAA10210070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97b38a46b8099ae7ebdcc36e305967f9bb0af00f50d40a6f3ea12b0811fc94f. 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/EEAA10210090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02696bc29211319aec3bc99b08c1a8d2663f6bd1ec16fcb288673ae6f75db939. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/EEAA10210100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa276d509be08c9ac40e908f1dad0752b07d3c93bd4220dc8f1bade774b316bb9. 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/EEAA10310028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cc02999a8829e0b5ebf6e464df03b603b851dff33f77c0f1e1db189bcde160. 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/EEAA10310031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7855a18f4d6bfb8162fdcaa7eace5f5fbdb36e924dd88cb7dddb08f81aa0c6e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/EEAA10600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42397f16879a2f43091fed7392addba97e81c10a3da78b17ce90f8a026ce17fb. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/EEAA10600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bc2dc503fed7a810a676bdde6f6b36f6ab5419040aab94f4490d7502ed1f42. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/EEAA10600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5441a584f984e19d141a4beea890f5634ebf9c52829b5052ecfa9f56942e2069. 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/EEAA10810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce80eeaf1b356b297d7ede830e82b6561617aeb4217550eef7b51f92da93ac2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/EEAA10810003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4594dff823edc917f11fd3e3dee108439e7a00a94302130f990cb7cd2f5c545. 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/EEAA10810004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4a4b61d1489abd39cefdccef52b50e2694e4ae2e9d76b4c35f0421ec16d009. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/EEAA10810008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84170546776ab6f885cc1b532b755e508d6c15e31761b331ed0ed474ef13ab5f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/EEAA10810011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e1e9429dd475c125bf0eeae65e083deacdf1943bd7f689c1a2af956f68dd88. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/EEAA11110005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe403459cfe481d1e27e776ceb83157fae87209dee8e4df07b6afc0714669079. 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/EEAA11910001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf048b3162f4e78ce317e8c04594489874637d050a99c97fa7a5671b639acd. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/EEAA12010006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf763179949b2b4da3e4a31007dbd88651067375add7b02a80d22dc0f533cf76f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/EEAA12010009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23d28d77e9a132032e646de86758b626754e8e5adaf8e4df14a722ad9c19c5d. 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/EEAA12010011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a5bbc46826e8c8aecbc2e971e55589528c84ee25ab618079816967c74f0497. 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/EEAA10210110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518af43d02bd87d9f62c41e95e880df25f076441d8d35f41494bc94f6d137d99. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/EEAA10300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd3a4a5d0f989c2a8598c42e46b4d59158c31ff7bb4d2d6ad1408f2d452bf46. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/EEAA10010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3038cee26d51359e4d9ec4491f1918c7f29231e244f700ffa7da8338bb6dda8b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/EEAA10010007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9ff06dce0477385ec348dde7211cd4fd3cc81d0de77fefc8813a5e464b1ad. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/EEAA10600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b5d154cf693db7b4ea02fe759c0d7c34d2d14429ce33ef88c35b9965586a7. 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/EEAA10300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6de81fabbe6aba7a7491f01d20a158b782df295b5df8f8c2184090c4c34eb7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/EEAA11410015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375f2e91d322f42e103411f9758a60929ad764452ea1f9761b6e4012ca5477f6. 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/EEAA12010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4aacdcb78574f3db17bcac8039dc1d3535fa8ec0db32cba9463c50fc79f902. 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/EEAA12010004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e6d28ab1396e53604677c20b30f6c27496d2e4db835c4ea3c538256943b017. 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/EEAA12010005.
Au ja vask (Funkified Anniversary Version)