A fontanelle (or fontanel) (colloquially, soft spot) is an anatomical feature of the infant human skull comprising soft membranous gaps (sutures) between the cranial bones that make up the calvaria of
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 0xe7ea3f1880db01f0fdf76a37168bb1033afeb35cf0c4e4d53368393f1692de24. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92a8a32c-9660-4b2e-b533-92e2734cd89e.json and https://artists.proofprofile.net/proofs/artist/92a8a32c-9660-4b2e-b533-92e2734cd89e.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 0xf62bc9b24f255a45751b3c4522905015910bd57b5fd74d217a346e5982c8a30b. 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/DEZC62449072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101011d5b00d23707fb8ced775b35c891f962aeed9238a4e02d4f64f93636b77. 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/DEZC62449073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a87618e9f245c381403fb72996bdb11a42a7e7b3b94bee1396a034814335908. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62449075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d49b1cecce71bf70fee482c3fbbc43c39eb5dbd382af0d1c598c2ed03ef592e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62449076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269207626b935060fe09eb88492ad413e438ab92f61746797752de477c9e07b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62449077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e679c5dd12918b82065567ae717c3b19fd1ab31514997994867d81c5504fc0. 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/DEZC62449078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5be41cd4a897222c0cceb5effa308b6544c4ec85608243c406e9b9363427fb. 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/DEZC62449079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe394083191c5692d9c817fc7c46d1f04572bfc92b6a1735a66541e8bcfd2e0e0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEZC62449074.
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 0xbc517554dbc72b7040b8031ff2777d88fcb53f4fcd9ebcb4989c8c31b3d357c5. 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/DEZC62276942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46211dbcedd450bb28df1cd73c1d605d702c9df8637b082beea70c65eb9eb434. 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/DEZC62276945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958445a63d49d1f47f9edc443527901389673fa114200c1f29ba597286a95e0a. 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/DEZC62276946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeca0397e1369a2eb2eea4e1ca1d3a6e2cbb08dd61c90dab52d35d5b2e1948f5. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEZC62276941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecf8af25bc8484eb1aa32958bea799eedfa16f2fd1bdd7ce00d8be1f7676cce. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEZC62276943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1739245ecf79953a496283cd4e8a7cb7cc6b6916875bea076b88cb2ce74a29. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEZC62276944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7795d909d052d216a439c2cdd47aae04e959afe6feca804c4554d646d817a466. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/DEZC62276947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe837430d12e0ea734e0bb27e0b9e7ca40d9f50b4345532f737e1bd46fcbc8f5b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEZC62276948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25b66788e38a79c66ab574dd0c23dd9386c991caf98b5b17e6baaac154c9aa8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEZC62276949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f034f4c46d9e66a528ff1346eae9d6237d85822a3c75151f3406236c5539e8. 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/DEZC62276950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f973a7c14e32e789867e2387835832f030b2c0fd4206fca7f5c36a18ae56873. 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/DELJ81878993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50d2153c71be96a7c3e1d7034dd282527d3235aa986de0c818a0635208395ca. 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/DELJ81878994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e849c2ad4e904c302ec845130d30ea25dcc257075ae5afb95da5241f0a4442. 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/DELJ81878995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90222a811f11dd92f5f7e3d8a0d0eec3568447aeb7d46cc5fce28e4de1c22f94. 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/DELJ81878996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462ff3fb4949524c2a21f59eaa40c66095af36f9614c3928b2cbc4befc05fb9b. 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/DELJ81878999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dbcf1e29fb619ff4161a2828883ce0470987d16d9f6a3372d82c1a8af746f4. 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/DELJ81879000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17401e9dd8243d31357658b4984dfa28c9bab6e8d260c5ddcaacc3451dd5ce47. 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/DELJ81879001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42df6033e530203e546bd0f6c73dcaafa9c19236c56a3f07c7a3f0465be47101. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DELJ81879002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c53ff06e5c4bf642d3be890780645718c228547664dc746daedc8e90c64e9d. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/DELJ81878997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6381a1e3d4ca29a2c2f6d41877bb4ec87b10394848f5ac695a06689aaa6c4156. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/DELJ81878998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb449e8426a573b70ffee82686a7d219b37eafa7fed137a87f9fa17668383ac7e. 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/DEZC62174326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11843c954416eff661eb05d70f792c300b850e1ec04cc961a10449ece4fba42f. 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/DEZC62174327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a66b34809cc6a33369e2cc6c6ff0bb614fb181f164702f16db2b91dde3af2a. 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/DEZC62174329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecf0c3b162812e14deec3057fd88883b97c3ed07a4200314a5b0783aa559841. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEZC62174323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97e94df308e3d8f7cc2c9be7789aa90a90a593bfe3f0d9ef56005d03d14b1d3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEZC62174324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191b43cb4d75ddf8ac4a8f00c3b30b78a532ce5d39d32d6c214d83181995d35. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEZC62174325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cdde2e538606ac3cd8d0f5cc051e54a9d9872cf3882d6cbde2ca7565f385ba. 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/DEZC62174328.