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 0x99ae28221d2a56bb9f96a6f114c6a5914ebcf3163347d96aa8a1abc5d17a418e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f39c0ea4-c860-4b73-b941-297d3f8e6307.json and https://artists.proofprofile.net/proofs/artist/f39c0ea4-c860-4b73-b941-297d3f8e6307.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 0xfa2e5c29275c2749f890ef9cea0254c4b944441f54af3c14dc6cdffa1445ed95. 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/TCABZ1469987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5994674ff46699472f4077d4c981b1089b31078717eecd74fea699668c80b3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCABZ1469993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a88a69caaeaee23a7a231b9f00ae81357ee657f9b8d1823e3e642cb9c763ad. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/TCABZ1470002.
Pequeños , Medianos Y Grandes éxitos De Au-D
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b91198e754d83bab979b0b5b59ae0b9ee196f9077a062f22fb8a5668b056ac. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCACT1692455.
Pequeños , Medianos y Grandes éxitos de Au-D
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a8bd81d3d778890e4daa49e435e0f58e12ce500e4e7635d77197b88f4df96f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCACZ1784160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6835a6cc786d1000d3eb23b7816e33dc55080df980e4ba138e994317029a6774. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:32:40Z), 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/TCACZ1784049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3e858e391af4a38aa51cd286ae388a54b49f1a5c3bdf37549d3ead08ecd9ec. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCACZ1784077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0252d6f66c7a9daaef4b91c389857625fd9022f0d676782d6224d72e5aea51. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCACZ1784067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe976667aa6bc9f0915f3d4eee1322e9545072238b60e011c806d09c72dd07007. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCACZ1784101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d0066c40c2e09535071e8ecd497d07911f6ce362260868c4c425435323edc3. 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/TCACZ1784151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2e70e59958d5026ef66959ef4830ec0ab91251973ce9e13d6cf5ae52d6f990. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAEK1961560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff4d16b6454e042640663f09d16ddaa864c807448a20ec6a7c11fe4ca517901. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAEL1913521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf531cd4a48148d15aa5dd6734da36c74aae09abc8b1ec8f64342be523a082550. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:27Z), 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/TCAEL1913481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ca6ec47142e3be7ab1202a378348d68056153f8e886116229360be820c5085. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:15Z), 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/TCAEL1913493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fa271416bd9b7fd7e0b1fb2143d807c44ef0fa09efa9341218c4686704b3f2. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:35:53Z), 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/ES71G2227614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212fc083295f29ac960085b57f9f7652d3790db58ff9b618b4a7f79a390fb886. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES71G2314643.