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 0x2e6ab4c0dbbf1dc3db70a398153181b6adced8f574fc31af057dbe5b52aa30d3. 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/9d3681dd-40c8-456b-94e1-8478525e65a8.json and https://artists.proofprofile.net/proofs/artist/9d3681dd-40c8-456b-94e1-8478525e65a8.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 0xb8bf3847319697a085978ab5fd1765e2a237bf0442ce4e16045220285c8fa30d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAJD2444067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b8092a8c2be16b6c03cbe92ebfbaa8bed2520580e7d74c3f8fda929181cac9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOX8G2400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e01c1e2494709c7ef27cacdf9226bce3da7f69fb2183abd41ce2975c5a0bb4f. 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/QZZ7V2490916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986d16cde8c0143225e0172cf06b8ad820481f0194d218996962145cdddc91a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOX8G2400455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ce7f81f60b49e11fd079afeddebcb1f4504ddaaefa7de1dad7714f4c4d476f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NOX8G2400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9472a4107f633e3dc34970482688b3a287a7d7f56e6b39e56d045fdbeb60e8e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOX8G2400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a34317e6a90e873c9d518e08efebf45caa5e4c7d518492653cb05e6fa092b3. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/TCAIE2446635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ff4cdacc12c9c7fca2c9ac6a30db06fc79275573a92cb6aaf90c9c09c630e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAID2493711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cff40e99f4e2cdf78e042f7a43d31b3e611dc9bd37c2ad46db6926791085fe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6N2471988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cec1748dba66e854ba8b3d2fd1930e27ae0fd456bfd89c42c78ce44ec93f21. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZK6N2482756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7772dde3089c6cd3a4cc246f6e9ea24467e556ed0b13dbb122f7aef4d954ca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHR2350443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d58cfdf1d4bdb207b3ada071b07e52ac3029e77c1aca1c017267cc3e317168. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NOX8G2301550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a8abe603a4693b7f04d2fdc8915d8cf3b16a3c84ac8233f40734bc0e54ad0c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/NOX8G2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657e3ffeb3b1495da87bb95f142feeacdf3eb2827cb9c99e5b49f97e9e284ce3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAGQ2238413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf079139cd1bf53fd3fd23d5e14ea19c8e3e190d9d215f3987f52378653f5c8b5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAGQ2233533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc532c43acda8938cbb7135c7a37226a3148a75cc7abdb1d17b093319fa7d414c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAGQ2205783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262cfe6a2083f9eb147daa3cb36d850879ccacdef1423dfc99fc2899d3ca3fc4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCAGQ2205623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7c030cad0b757263b7a195dece00d24877ea45c59ef3bbfba1c1f201510ac4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAGE2222937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8b10ca59827f6fc1c8b7735841dc8a9e30c06327bc171800f64e8a60be7a35. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCAFU2192190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2f642700f273d37b6d8336e23fd31d95b32c42e9e6ccb2dba9464a2a8fd343. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOX8G2400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4bf228b3effe5eefba00fa9e0e564c1e0e640ee181ef35a5acab91f130ca1c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAIF2429684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aae6224411820ce583d70d835f6464c0ad2645fff2d18e75e2fb7a28820de01. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCAID2432264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbe8ad151e9d369e7f347bc56e45b0d675061eab7903294bc0311a568be199c. 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/TCAID2432271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0ea0eb8e2577b0f945d2b7aad98d26cf1e63d3c3c4df1a2760d0ac2d5a4db. 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/TCAIE2432274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfaf63a9ee152357475955383b13f56bf208775332f38c2609711705ceef157. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TCAHP2366783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52788aa0880267ed2b29804c946b820dd29bc9e28ab15cc80aceb4049129108. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFQ2110950.
Bellini - Eikelirussen 2022 (Sommer Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4673dbad140bd4fd4154a5a1c640ad17d214b7add433e37a31995c80968876a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFQ2101667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08afd975e7b94349cc473e02bd8b74a8161edc5df6c061b9618a7dc10ef67bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFP2114651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b439efb4ede7bce32bd506af14dfdbf2ce3092ba39ea0fb4aea43a677922b49. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFP2104520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf284e2044cf1f595e8c71b3282c100f62bb4088ed8f7f5fdc3af5677983418. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAFO2197637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe592351ca551403cb4b09c45a8ac98f621a98886117a921c555c73f8b3d3e461. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTB32269724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28206b9746cb0fad94f1ee1c19f14029a5dd6ca8d807a6d7da45cff224802d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOX8G2301930.
Dåsefella (Bulldåser 2023) [feat. Technonigg, SatheroZ & J-Dawg]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7fd6f582d02eeb579fefa21649ade62a7ff5601ae6190b0b473f4478c3852b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOX8G2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc4329276d014c7a80f394b04a31e0f1b7c404bef83a23ea509a25f5dd7e1b8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NOX8G2400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ec9e65922b9ac643b7472a4ef634196e8b5b31fed1ba9d40022efcf909767a. 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/NOX8G2301100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca5c69a78563228a71e68e7d125136496913ca0436f1f75f5a2266ff9d6bb1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOX8G2400153.
Så Kom Til Nesbru Min Venn (Ballpit 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0400fd8eecb417c8cfad6647643cd4153e742163bd907b30572254d4834538c8. 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/QZHN82302007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7a9cb5ce532c042417859eee2612aa50d4bcf963e29352e3e9c265952fa9f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTBD2428063.