A comet is an icy, small Solar System body or interstellar object that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitat
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 0xc9a0e9b7994cdbf4ac36c5605ba7238dbacba46efd10464b75de5a7d381ca278. 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/69eeed9f-b0c0-4243-b22c-1ce6b878ff65.json and https://artists.proofprofile.net/proofs/artist/69eeed9f-b0c0-4243-b22c-1ce6b878ff65.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 0x43d5d2250fed1095f8449fc69446766a1c6c62021639dbe553feb564aa3d27c5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FXR752405180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd359d4cba03a86c00f36d341ed516b5e9cb18be0e320715c749ab353aea4dd3b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:29Z), 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/FXR752401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560013ccb8a6888b88666198ae3f088768cb41d33446bdb9f994ced1da45073a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FRDKW2303833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1d9ee2d5939edb2333b042fecb5f8bd3f79a8802cc48b49d6ad9078824feae. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FRDKW2303831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9e38e4b381d54839952fdda4146096c8530022e54b368b9caa6a06064406d8. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:00:07Z), 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/FRDKW2303832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b1ffc5243b29a1568459d0b011a2fc3921c6b2399bb71f641865aa00b5b66c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FXR752405179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b990154af7c25078bdb7c92a60df01c0e48dbf35c3a95eedcea83412a65b4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FXR752303316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ebc775db44136c361bbafa08dadeeff40254a166dd07b171a79d5eb5ba5ff. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FXR752400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13790ffb7bee849c6d6b54e52d31ee554a3f15395ac8c670af74b593a08526a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FXR752400959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b79ebf64140633ae8b5c72924df20ad3197355163c6b46cf43ee67ca0a9bcb3. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FXR752401033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab742ba6de2e27673224e116d1caa27093ede61907a37434d040f55a6dd222da. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZVEM1824379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3933f4b09dd02f492a693bbd3515a3d150894d21d7869807931150b29c162030. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FXR752401639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fed84300713acd9786bdad238f1895587330c79001fed09f53e5f76a006122. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FXR752408329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fe9073904c4c823ab1ccdf2bd491ec5b20c2366b7f7ae305d7a08c1f94c773. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FXR752408420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6160a31903c74aa4a8812033b16fc2dc122c75b3ba52b859d3314533ce60ea8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:36:55Z), 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/FXR752408422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b26fdc2ac8ffc669564e846607824d73b62615ac81385e751d929dfb30200f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FXR752408322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d6e1a3334dcf3d5d3122e0dd8a5b983f9b5f57333b406a653af7f2c83ac48d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:50:42Z), 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/QZVEM1841352.