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 0x2209f81ce085f64508a9e908d3b45ea9700fa4b086ea4f1aec1cc4ec5c4f4e99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05d5da9d-dd2b-4daf-816a-afc89de3ce1f.json and https://artists.proofprofile.net/proofs/artist/05d5da9d-dd2b-4daf-816a-afc89de3ce1f.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 0xb6ee42dc07e9b132601c1cccdb75251dc12d44e8163a13b4eee070e3508a0d41. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMFME2163117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6f4d5bbb065ebdbf335c9c94041849a763c822930c954df9274680b0dd7b48. 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/QMFME2175377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aa9416f7b9c0fcad9ca7488b6efaee09b3b82b19c84859105fde76aea5cc32. 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/UKN6K2200763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4580d5cb19957a8b5fdb8e5483b699648b15bdae83e722d08521cef6a3921a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKN6K2200765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841b69a9d442de79806564a65b38dbc235293aff1750a24d775fbf3cc572ce67. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/UKN6K2200762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2642891e7f480b207035a5b83713abede08f8a8e12d5167a0c9003b41f05629f. 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/GB94U1700457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce1847d7c0ceb41258dfdf6ceac7c42a32b96880ef7887aeb4e57b4cd3e8098. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GB94U1700458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22e3843101c8c700ca903d99afa5650b97223d0914894f9723d4eccad748604. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GB94U1700460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc9b66670299fb1e77654a94a184b6a914f381072a2d8b529b43ffd5ca1ac42. 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/QZK6H2432069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827935a3cf3ebcf02c8ac43ba2a99466d422f5761c34241bc6b217f908c3bb2f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6H2432070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cb58edb7109d9bd96855a5cc8079d4a892b6b2d97b1ba81d6758e49b8d9c2e. 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/NLHR22400971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1c61e1a0f7851778e3e357f41350058df2b5366f9ed627ac87305f4f3b9cff. 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/NLHR22400972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9371a021557fe8d8e6b811536ffe57b5035a927bfaeb40343158528f8dc8b095. 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/GBKQU2352553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c870dd2a63526f780a7bc016d19a7b46530c2c7246e05ad6eeedd34d2eebb6. 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/GBKQU2352554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3cde39eaef83a9bd0e27ba0ec17a96b2b3f5210501165aa46e870a782216fe. 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/GBKQU2352555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea0353b42f902abd29e65d443fb065f6f2ae4cde1c23720fd79d51b87725762. 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/GBKQU2189949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a3f9f712608812df473c87b313ba55e4065d4f3faad178f68c34a24cd3962f. 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/GBKQU2189952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fa3f67d97093bc45677ce00537a40c19b6e801bc97321c5f03b8e418ac924c. 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/GBKQU2189954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8122fa2613df8154aca61a6e0dd9f0e825630f4352fb8eb18f9eb64d5e9d9c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2189956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe346755012f00e8c2fd676d8b1feb7cd47f7a014631e9cf7e5bf46c744db3be2. 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/UKN6K2000298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeead36551a99fba128cd3dac6c5a32d75bd23f644847fb351a91c6ec634d71a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/UKN6K2000299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f805dab6ee9f910faf3c1cf5d29fe6355934531cc9709f948ab61512f7c9e8b. 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/GBKQU2009837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7c765fba9cedf3d3bc35fc26f4dde2b3e2efe4de7886a22180e3d68c92bb0c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBKQU2009835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd4e70c7cfea326960cdb0b1621a2afbac8b3f7a7c82bcc3e1938a036d756f3. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/GBKQU2009836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc560ec8f0bf384c7c598c49922285ee15aad98826a2ebac50621379d79fbb7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU1999343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369afbad57ef8f4ebfc51ccf645511c2ec941531e08ee9114e97580c9362b46d. 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/GBKQU1999344.
Nothing But... Pure House Music, Vol. 20
Nothing But... Amsterdam Dance Essentials 2023 House