Physis (; ; pl. physeis, φύσεις) is a Greek philosophical, theological, and scientific term, usually translated into English—according to its Latin translation "natura"—as "nature". The term originat
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 0x774eca3c5fd4809d18cfb0eddf776c27468d783b16da6632a7faf3dd27457187. 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/c4f83bab-8a7a-42c9-aa4c-a24bf1474ad0.json and https://artists.proofprofile.net/proofs/artist/c4f83bab-8a7a-42c9-aa4c-a24bf1474ad0.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 0xa6ae11c2abdcf6029d88508fe4843bcdba958f08e3985fbced2b1efb2d41f9a9. 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/US23A1584262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1d6bfa9db5bfa20629f4e0788eec5069f0f3c7dae4354e38bfac8d846b84d3. 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/US23A1584263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf956bd0c1fc9a010b7db6ed25af11500ca03b164d3d1e88d6f2258937f748770. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23A1584261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ae11c2abdcf6029d88508fe4843bcdba958f08e3985fbced2b1efb2d41f9a9. 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/US23A1584262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1d6bfa9db5bfa20629f4e0788eec5069f0f3c7dae4354e38bfac8d846b84d3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US23A1584263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c21080482467419dcfff68c43835b3467f27dd116a02b1f2311d421e0ae216. 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/US23A1584264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22837b7a873b9b253f87476ed512a6365744f087999e0762c7ff36b9a5ee8cb2. 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/US23A1584265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f3670f409185575ac79b58de240b40f2d7e4b0758e5b3bfaad70fd9df13c6c. 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/US23A1587432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6e7f7123ce082afdd4683813354a40969bc2e769a6e124d150dade9de08913. 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/US23A1587430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c57264c5d8fbea816153f15e09862d05143048fd3422a202e6dbf2f4ed72e5. 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/US23A1587429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6e7f7123ce082afdd4683813354a40969bc2e769a6e124d150dade9de08913. 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/US23A1587430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bca4c05281b4528b6d5a56015395d5c560c587e95dd70ac7991999ee66b30e5. 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/US23A1587431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f3670f409185575ac79b58de240b40f2d7e4b0758e5b3bfaad70fd9df13c6c. 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/US23A1587432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43abab304b0bbd77515e6915969fce8d9397dbaccbbeee6b09a884c81130da31. 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/US23A1587433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a67b0bef3aa81bc7d560ada03ae4b4df3a257104eece6be7e703c97b710c03. 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/US23A1592733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aed31cfb49a32896786ef2531a57b9fd885ee7b6a77847304963a439a580e6. 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/US23A1592732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3671d4cc645e32a61f8a71deb13ad507bbca9b4d4077d4b4426f81eda42fab29. 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/US23A1592731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aed31cfb49a32896786ef2531a57b9fd885ee7b6a77847304963a439a580e6. 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/US23A1592732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a67b0bef3aa81bc7d560ada03ae4b4df3a257104eece6be7e703c97b710c03. 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/US23A1592733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182e10c786de3272898887189765af7de0382f14cbd12f478f63924e38c80c3f. 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/US23A1592734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf9b7e4c13447fd27e875acbc3f6c91d66ec9f6949f51c841b33429c9effa93. 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/US23A1592735.