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 0x6304fea5c2cd295e0a5fa6edd358ea4fdc2f04387c35b43c2a89a05bda827290. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b7d3816-0bce-4df8-99cf-da6c6732ae0a.json and https://artists.proofprofile.net/proofs/artist/8b7d3816-0bce-4df8-99cf-da6c6732ae0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Larsson: Forkladd Gud / Rosenberg: Den Heliga Natten
Forkladd gud (The Disguised God), Op. 24: III. Chorus
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 0x116c8696fa51c414b890aea757f598f6e5fa0745069646b8903942287506b828. 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/HKI199850403.
Forkladd gud (The Disguised God), Op. 24: V. Baritone and Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cc46349cd0de38f28f17172c7332e23cbfda78289a4901e976d6522fdd639c. 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/HKI199850405.
Forkladd gud (The Disguised God), Op. 24: VI. Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c591ed94736d17eb92f5d2f0103e06ee181fc24ec91308570a21aa2ad4559a. 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/HKI199850406.
Forkladd gud (The Disguised God), Op. 24: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b578789b143fa0e5ec545785a5d5ec3bb53f95b37d75938aa35bde2e3cc53df. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKI199850401.
Pettersson, A.: 8 Barefoot Songs / Concertos for Strings Nos. 1-2
Bortz: Hans Namn Var Orestes (His Name Was Orestes)
Ett år: 12 månader, 12 sånger och en nyårsfanfar
Larsson: Forkladd Gud (God in Disguise) / Rosenberg: Den Heliga Natten (The Holy Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fe4ab8dcd1e27b15c14d94397bb0e5e19917807e84d1d1901b0161b45f60e3. 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/NOJVA1235101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b6fb1bea4052f46ea8042f86917a370552e8216e754d14ec9b2a1f5f1b2f70. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NOJVA1235102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38756866961ed68029ab60d68ae02a303a59c54392159cdeb900247fae3a8cca. 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/NOJVA9918403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4dce16d32f7aac79c1f83f6597513a5c8e1af2f20c2bc7cda746257b5da429. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NOJVA9918405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409b3d1981f40e3449baa6c38b5cecc6773a07f431ef8408dbbc34e668eef05d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NOJVA9918406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0c0e8291978ff6b576bc5211c35282802220f7f542559d74022e735c65d012. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NOJVA9918407.
Sublimation: Songs and dances from 18th-century Scandinavia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfecd6f64e608390720ce0373f5ec8ab2ae7f2f73247b4367ef8af2d1264dc7. 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/FR7JM2478050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cef4a95e9501698d2942528f3805a504996ad00a620e2fd6f9e87c2c683b136. 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/FR7JM2478060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6722309f3db65c2a9b0f9e2f4fb19320cc150c390bdda1fc3c55cd7b7d62c0d3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR7JM2478080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5809a96d1d59cd6b23529d2361d35092201feeb6d92c2f1a6919d1d69542af. 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/FR7JM2478090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e59f1473c2fa1ac717cc96c9a3ae06c4c4efb00df1796dbc5b663955d974d9f. 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/FR7JM2478110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d28d690555af93338000be262c28d0597a1e860e7ca7c5f7db702b451095596. 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/FR7JM2478150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb31d026996e318e69cc7609ecf138a1fad01fa40552b0160189f38e9d0695c1. 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/FR7JM2478180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d80c08892429ee22ada445b2eb474956e96346bdc9acd13018243f601f49c4. 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/FR7JM2478040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ab2105dc5b9013e63a4714d438cba117726b73b17bde3448e942738410fa70. 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/NOX9X3298201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15d9696042441ed0d58e030fc323bdd410817738e07b322b2078924db6d86d2. 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/NOX9X3298203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20474366e62a17ef6ca37d7c2acdaaed7c454d7ec465982e4aa3fd33a7ceb185. 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/NOX9X3298204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66ae7809c732d1d931bea2ce5e985e2cddea2e914ed2f1654c21ddb1b8621ca. 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/NOX9X3298207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8202cdf983fd8445083db2bf2003af50e0a4d12b9baaed2b3b30eb89616e35. 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/NOX9X3298209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c18a9a2036708eff708e73c21c89f8dd101fcadb2d9637d0256535ac018a17. 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/NOX9X3298215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9366472fd59d43c273646667163d77b4e0eac1896d9e31dfe5fd0bb6b04880. 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/NOX9X3298216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f467805c615a9c1d479f689d45047822a9c83536d3066a8c54443650e7d2ca. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NOX9X3298214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629986e505367a244b068e96f9bc8176b790d2c01147d1e94851d379750c489b. 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/SEWCG0401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755f19803df148c89dc9a3e27b766032badf7fbc25b0b92f7d9e3c303d382e08. 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/SEWCG0401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683f7ac6b06d8962b330248a455bc5e67fc4c761908c6683d89fabbabfc43a43. 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/SEWCG0401050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a4f073fb90412619e702e8a1689112ecf5c09369746d7c20c088b431a651ea. 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/SEWCG0401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd554869cec43a9a2731d76333e39368e4c66c30c6ae82aff40a38d76cc81460. 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/SEWCG0401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd712d18590c537dd36bb1fbcfc60cb1ad921c5a012d209365ccdd6c4687b0bb2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEWCG0401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb29fd8e0b1d1b21379326c1fb816c206e0e53515bd09652ae74b4eda95447e0. 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/SEWCG0401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b107a5757ce7206b8ed47d0366af6bc85d68e427d866aa53ba430d048d559a3. 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/SEWCG0401160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaceae3b1d4ca6eae4824feb0bae489d668170c32321cc2e9162b3c88e54eabe. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/SEWCG0401060.
Larsson, Lars-Erik: The Best of Lars-Erik Larsson
Kristian Bugge Radium Prisen 2004 (2023 Remastered Version)
Sáme jiena: The Karl Tirén Collection of Sami Joik – The February 1913 Journey