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 0x920fbe5743a70198c97e338f87bd89b4e48f7f3239e59b5e49fce50a7b0fed50. 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/877fcd98-7f32-4a51-a528-8f2dc9fd6789.json and https://artists.proofprofile.net/proofs/artist/877fcd98-7f32-4a51-a528-8f2dc9fd6789.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 0xbbc37297cf4af0d06cc453120c7d358c36dc6fae6fa9aaae0ac21de63f43403f. 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/QZK6P2470323.
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 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/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 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/NOX8G2400455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e537d56f567056eec17f030cc81b322b55f0ebc55149b16ab64de4c3d355cfa. 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/QZZ7K2436135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3b56b83e39e61ba9c9739b35bc57c2700b781b95c30b291e6d9408f143bcee. 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/USA2P2461169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d56ead2615883872e8fd47aeb9778fb0f08517291d85cd235153aa27197d0e. 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/QZRP42413803.
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 0x4b44632dbe85b03e47bf330dcb4533908a7ed8cbcf52a1836ce0a8a809abbd78. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6K2483222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ff4cdacc12c9c7fca2c9ac6a30db06fc79275573a92cb6aaf90c9c09c630e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAID2493711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cff40e99f4e2cdf78e042f7a43d31b3e611dc9bd37c2ad46db6926791085fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6N2471988.
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 0x44dc6413c8c055ef5070ce7d67ab45fb4e0d11f9f16e1739a661b98cc66fb32e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNB2383667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657e3ffeb3b1495da87bb95f142feeacdf3eb2827cb9c99e5b49f97e9e284ce3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCAGQ2238413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf079139cd1bf53fd3fd23d5e14ea19c8e3e190d9d215f3987f52378653f5c8b5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAGQ2233533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc532c43acda8938cbb7135c7a37226a3148a75cc7abdb1d17b093319fa7d414c. 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/TCAGQ2205783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b3a6022bf0d81ed376b6297bffab7b7f621c34239c2c46326bb7c5bcd46860. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAGE2222701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7c030cad0b757263b7a195dece00d24877ea45c59ef3bbfba1c1f201510ac4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAGE2222937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977380bff8151c500fa23f4fc0c6ec321ac6cdff6c3e310f317905a02b009e8. 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/TCAGD2272233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac093f819b1437b089fc3bf113d0b1d567b2106fb06c9797ab7760c3b3f73b1. 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/NOX8G2400132.
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 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/NOX8G2301100.
Så Kom Til Nesbru Min Venn (Ballpit 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0400fd8eecb417c8cfad6647643cd4153e742163bd907b30572254d4834538c8. 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/QZHN82302007.
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.
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