1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa12263eb2ad016ec060e30325802bdd5f1705aeffef5731c62dfc44b595434c5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33d22fbd-9788-45a5-9e29-4ec2cbd37d0d.json and https://artists.proofprofile.net/proofs/artist/33d22fbd-9788-45a5-9e29-4ec2cbd37d0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Högberg: She Smiled when She Said Goodbye
Egland: Waves and Swells from Silver Lake
Weinberg: Trumpet Concerto in B-Flat Major, Op. 94 (excerpt)
Scelsi: Tre Pezzi For Solo Trombone (excerpt)
Weill: Excerpts from Dreigroschenoper: Das Kanonenlied
Mozart: The Magic Flute Suite, K. 620 (Arr for Brass Ensemble)
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 → block OTSBitcoinBlock must exist at that height 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 0x1fb2d17ef6016dd66ce4e26b884238e19b3f4b511993c2a7218e95ca7ad08a48. 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/SE5XG2361848.
Higgins: Concerto for Trombone 1. Lyrique (excerpt)
Bizet: Carmen Suite No. 1: I. Aragonaise
Sandström: Ecos de Eternidad: V Voces de las Murallas Roman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20d4f66d5fb7cdf2a0af87bc4a43701c114c151ae86e32ea5fd86e0209e2622. 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/SE5XG2143932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdc529638beacf09fa033f46b4ce3677120c44b36e306a24dfe2a7b2d1af4fd. 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/SE5XG2143937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f519ae3897694566945c3ea21922833e8d9a3c8742fe3c21aef47748daa0b. 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/SE5XG2143938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7973bcceb2148e9d567fdab6a5010e4d322fb56ffda9720df045f090ff499a9. 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/SE5XG2264701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4f29692d0136451247f3169996146dd57164bd8c91538fc1fc16bc3f5d066a. 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/SEWYF2240001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0770df1448c06a417e3342494b9becbcef4f77780000cea8645860da8f21691. 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/SEWYF2240002.
You're Gonna Make Me Lonesome When You Go
Gotländsk Sommarnatt (feat. Martin Östergren)
Jag har hört om en stad ovan molnen (feat. Martin Östergren)
Så Skimrande Var Aldrig Havet (feat. Martin Östergren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd564cc43bdafa9ef32481e04577dfce8b41e23a169c57a6af4920d4482a04343. 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/SEBAA2001401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb47857ad8769a3fdb06f05785b2a7a63cb6976eaec38dedd0924e8800551d12. 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/SEBAA2001402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cf410689d54abc164b91f18e325a239fe83a3cf05378ab74b63c9a1fa8a471. 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/SEBAA2001404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d730256d95c2c1c08f4a3fb8e49c62b15fcba3ae3d71871f3cf0977db5f58a4. 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/SEBAA2001405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6a5e893f19471958821c69ed8da3b357c6f517156cb13ac81a6e86c783df00. 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/SEBAA2001407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ee7c74fc3b3b040c57fd90ddce78b7f74e93600508b6375b47cb2297a4106e. 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/SEVVF2401401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb6e06a1afe064afdfba1339e32b8cbf4f9b37d79e76c71e531326333830712. 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/SEVVF2401402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118a716d6f8dc000ed909a1a23f67cd3da88e7d24d9ba14dbe1142f318b8b375. 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/SEVVF2401403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa669344369ae3cf79c1a5a4246e7ce6fc85ed52914a7ddb52be2914fd3665a10. 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/SEVVF2401405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63d9e4a14b720af07016522eea91fa6b2c13424b7e32e5e4f3acc2d2345b240. 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/SEVVF2300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc1219d4a86341561a870913cb59911008f73b3237c42f4d9ff264b849b27f7. 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/SEVVF2401404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1a3173c414c034162ccded28c3b34b40024d11f6eba00abd70f9e160cc8b5e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEVVF2401407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078a0dcec2204df216280621a77f89fa1ddfba4a071046782e64ae1db016bf08. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/SEVVF2401409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d950b09f237293722aa39ae50070868c16ee4b3c067e958e12277fe8b9f14. 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/SEVVF2300503.