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 0x46d465a2bad0e8232d8d7b8ee9aaf6e809499f6c74688c75d90da2cba697d2e9. 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/4c02df59-b37b-4a92-9220-a5c1f4de1cf1.json and https://artists.proofprofile.net/proofs/artist/4c02df59-b37b-4a92-9220-a5c1f4de1cf1.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 0x39897ba5e0323b036626aeecd4b6a1f812a2560f209afb299ef0c122409019f6. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QM6N21960639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee87b4ab9276d06118bcdfec47b03b0e25010a642c0e0a607f208ed884c1f94. 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/NOFHH0596100.
Vertavo (Live at Oslo Jazz Festival, 1995)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfcecd7bcffbd3bd35065287dc69e9a0577718c180447397c0df581c65a212a. 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/NOX9X3046801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103794f6c5e86fd4a0c0a4dff150fced9934eadde5ee565ae3ff70dd0778ff84. 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/NOX9X3046802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5167d33183ebdba1675dea51a533e126060178cefd3d532b19cbb184029aaf. 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/NOX9X3046804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d0cc4a4f3c084b993ab200173d26a872ec48bedfc3bdc3499336a94f8e535c. 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/NOX9X3046810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3632765f31d7a6b47d6ddad145f21710a0f158eb09aa8a6334540082d336f42. 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/NOX9X3046811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1ccf54891ca2390e0d00b302079b3632ed664f2eadf0fa9ef48340cb68a7fd. 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/NOX9X3046812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cf0eaf0a827027b8f89788d7bac2635adc1563dc6f821ec79f87a1ac323450. 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/NOX9X3046813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c1f31a37392873e23807725fcf2ad596c3062ef5502fab230b5b7a1ea0a9b0. 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/NOX9X3046817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e7ca5cb8b4f167af3611748c7293223f4ccfb878e1817719a38cd261b2d87c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NOX9X3046803.
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 0x84d7fcafc3a8a88367663c503fcc5c9a223b4792ab753a4b612cb4ffe0350903. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NOX9X3046805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6337f2d557be2ccd6c31632b23f28a4352546170425820bcd63d26a8223aa0b3. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/NOX9X3046806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fc55bc57e97909f53594abd9f60f7e3beaf7ce19a2564b9fa9157c8923e78f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NOX9X3046807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb43df0433dbff692015a65f86ff209f92b15c35bb71c9d8d124e406bf6e4647. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NOX9X3046808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624112e608b87a87df1fd91ad0f51af32f3e5270e854361c17a14a28764da5c2. 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/NOX9X3046809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a473f74a942d8478f7122535d311eee215304b1cccfdb6bb9e3ade2ec4e9ae. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NOX9X3046815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c886a7c1d824e39dd0739839cce51a78c74eede59e9e3552f8599e32e6e56a9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NOX9X3046819.
Vertavo Live In Concert With Hot Club de Norvège
The Jimmy Carl Black Story (The auto biography by the Indian of the group)
Dreams, Drugs, and Django (Original Motion Picture Soundtrack from "Jon & Jimmy")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d89017e3237d236eaf9821632dc293de47dcc00ad942cbfb18f2887b89d79f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/NOFHH1056030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bd3176990da04685c08def259e9b2eae28011b9111d5ec8ef0131907232caf. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NOFHH1056130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2efcb563829371470c3d5495306365b616d4df5384a191ed82846517354254. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:16:20Z), 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/NOFHH1056140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60aaf8d6f72df92fd9365b9b9ecb2a20e0a23a51b3180517eaf3c43d5a3d71d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NOFHH1248040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb545808f026cdf9e43e43d105c8c548ac874f4c87c5dffd4d5aab5a8108de02d. 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/NOFHH1224130.
The Best of Hot Club de Norvège with Ivar Brodahl, violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20776a83c30d8bd29aa8922f6925a5f135f43aa09cdb58e81ed102e2e5c4305c. 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/QM6N22570050.