thumb|In the early 1990s, NeXT sold this complete NeXTstation. NeXT, Inc. (later NeXT Computer, Inc. and NeXT Software, Inc.) was an American technology company headquartered in Redwood City, Californ
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 0x311e21824d23482e20b04d8f867246a101cd18785cf87d8ba3562c0aeec318aa. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d666e9c4-c5df-45d5-944e-2850d62e9b67.json and https://artists.proofprofile.net/proofs/artist/d666e9c4-c5df-45d5-944e-2850d62e9b67.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 0xa69c10357ca31bc20e9e4891c20561f9724ce9ff54cd36ce9067650a688c03e0. 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/DEQ121752151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a609f387d34c55e19ccfa301390d3a5bae6a2c5eedf7dd0fda7557fdd51532. 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/DEQ121752152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f149875fc89953209cb8943dadc756f17a11cd9d2bd9211a2ebcec85d99d75d. 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/DEQ121752153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a8b29571bd05e0ab45f2ff10f2cb7ea16394207389915ba8fe1ea569228d1d. 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/DEQ121752154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a162cccac68225e3e3f45f492fecd8f43e255615acf82ba3f7baf3618f701b. 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/DEQ121752155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeff98ca795096616d1884aca6a6f6425167af7b95ee88adef7aa8889d88419. 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/DEQ121752157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701936557ecf7a6d3b15adb6a19e206892e6c69519c94b89d77a908dd6a1cf61. 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/DEQ121752158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f959616b4aa4ff38142e1863e76276e561b039b6639df46d1340a220e83d926. 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/DEQ121752159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec00b133437db22e6a222a8e9a432e04761e1c44f6dabb02ba14b3460ed1322. 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/DEQ121752160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b2640027497b37a022a3a5093f88c25fdc1911747ca6ff06a31f700db8e633. 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/DEQ121752142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9318fb16e67c805ec537878f2a050d0fa0912d42c27b03d17d2e745eebd9f880. 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/DEQ121752143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6967213813144ab4ce88e7b2d899e65de8f861cc7b8b7dd4c1d9d57d188fc94c. 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/DEQ121752144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdbebf33ad9263a2eb9fe5a48382fdd360f67f243f82b71c90ed3e8c665931f. 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/DEQ121752145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6423963d0da793117bc18dfa015635dc0fdbc6b12dd560b1c2a24ab23fe720. 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/DEQ121752146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed76adb28780f10d85dab534bb2a3e97d60f1364a48ca99ca850fc5042f2ee5d. 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/DEQ121752149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d808dd01bf36817a7b501f5d9ce0d5e5c67502a899957a10b43aec9ea57d213. 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/FR2X41479824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ff8dee934e6053742118fd172eaf446dd2d1b03318fe46f5c8270bd8a7514. 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/FR2X41479825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b8ee16131ba3a3170d362fb867af7165b39147b0ca8223eee34aaa1b2dfcd0. 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/FR2X41479827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdec5d6e87db786e97d5d4f88f4a6a140ce7d5c400c37c20c28121e58cdaf61. 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/FR2X41479831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53006f0586c69669ab387ea4616ea4f6677215a8c5dd7b6b6d2e7e72e6e77ff2. 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/FR2X41479834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeace049e1b129048c9764c59f17205571929adc419f2e5b1e121bff2d570b3a. 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/FR2X41479837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88807548747f3348fb7f4710e7acbe6c4e3f14af19073226a9766336fd36bd6. 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/FR2X41479839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d681c010c23d03353331e8386e3c77428aaca20f9b70437ba59e67a2d32b13. 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/FR59R1491372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439721b56323bbd1b2e032418df15ac93ee27369291f2f423a5af5334331de38. 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/FR59R1491375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf12d34b80a55afcca11c4ee2f44b683cdd3e57fc36dadd083f95fa261d810f9. 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/FR6V82467124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9d386cf97f6b321becc524b440895f54efec899d434864fa575b0a5170447a. 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/FR6V82467126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e936a597fc5501b15c82d4c14e29db994acecf5fe4b8df7a0d1b2d1afff9494. 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/FR6V82467129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf253c8b06ab07ded542898e3b28f464d2b2f02fb6ab9e74f7d3285a5baa00a3. 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/FR6V82467131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bfbb1ac7b21d9cf62f964a636e18ea41a48b4351e27893980343944f44a7a4. 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/FR6V82467133.