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 0x93d1d04bde3b19606c0f17e41c0487811660b00b1d2fea189201beac56f773e2. 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/dd7e8c77-6de9-40ad-8a44-2219bca31a73.json and https://artists.proofprofile.net/proofs/artist/dd7e8c77-6de9-40ad-8a44-2219bca31a73.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 0x0893096a5507cf1c233f17bb3f55647412e243dc0f44495ffa34bfc4ca728f9f. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/SEVKF0601207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a6306a36a8d6cdb8a64a4ec1260bf5052f5f86d550a5240b582d32e0e7f393. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/SEVKF0400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330c15fe7ed0bd19dc0d0c368370bff469c259d6b17b9e5fd2377cec49ab7c56. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SEVKF0400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd729dfa4d730a4c6ad5db4dccadc2b877d739afcae0130cc695a25a20ba9d1. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/SEVKF0400709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478372b000583025030d7300feface8e7ce65366bb7b9b7d975a37cc5a2809fe. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:06:09Z), 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/SEVKF0700902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74ad830d4815cbc4fe82ba2e9490beb2230478eacfe3a1f08bc3467dcda24b1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEVKF0700904.
Let Me Internet You (med Johan Johansson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780db7a36001e8f9b2591c132d884a816e588d6dc2b0a531b177d09deb975ac5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900302.
Under stjärnorna (En slags roadmovie) (med Frida Örn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143e2c49dcdfdf95ee68d7cb2b4ce5fcd48934b1c5700b1f1d27c8890501dfc5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900303.
Resan når sitt slut (med Magnus Lindberg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefabc945c85faa9ef16cc96a74c1832b08986ae41418d9084a603f66c997c82a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900304.
De sju livssynderna (med Staffan Hellstrand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8af60ad40e2b08582309cd89bfcb8f2a6f01295afe6a271dd7c1d5794547df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6519139278ddc4c29fba631027d8719b35f4332ba4bec9de5e21e8e3274bc824. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9ed5d381e2c252ef27cbeafb292715e2bdbe587311a38033e80f44b88c5363. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900308.
Jag har sett dom som lever (med Lasse Tennander)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586fc0504686aa51ec37eb2553d4eb0193ff5c0cdac105ab866cede5e32e0a56. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8222d218bf403ddcaff90730f04f8fd42dd249b5b35153c64c190fc8daf66664. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77459be1aeec51bc0bb42c3d8ac565f22e6310c434a53bd517aa57f04f42ac4a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900311.
Balladen om vem som helst (med Mikael Wiehe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2c162d16afec51a3d53c525d1ffa6584b46417d6f2d68873e25d5d5fcc4051. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900312.
En fin liten visa om döden (med Ida Seve)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1616630a95928cb4e5ee9860638d37c5266c7908d065db6dacf8adcc38f5e8a1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900313.
Barfota i dårhus (med Anders F Rönnblom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27475e3e28039203ea0e8519aa8074b048a3fef8a91d7563257426c420347fc7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900314.
Tillsammans med mig (Spotify Bonus Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe169315a5f0f38079d2d122875335e489012229ed97b6008316b0c406c6afb7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900301.
Nästan som på film (med Stefan Sundström)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7113af774da09d3229561eea8b774a47cb42a83ce79ee2bb620092b23ff5e8ce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVKF0900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda2763f91612bc3669bb5b7524af337649c7c0de44f15d06fb1bbd1754357a7. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:05:31Z), 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/SE2QO1500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6184356b0c10f21f8ac1e73f1563b8772e35cf3d441fca95dd5acbb59df0db. 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/SE2QO1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d5badb1d4527e5a782f5e477f21cfae92645d115c04aa576a0ebf71858308d. 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/SEYCW1100302.