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 0xd885dc85381371b0b7710f6cad06e59f3fa7175d08401710a2b9831d59897350. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e0b3a10-2d16-4bd9-90a8-67a740165662.json and https://artists.proofprofile.net/proofs/artist/7e0b3a10-2d16-4bd9-90a8-67a740165662.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 0xd5a70bb6df69de90949ca0077a1f5fdd2c608a0d110976c32f7d2763a6d37ffe. 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/USDY41762201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11f89e06cd4ad9b32efa25b8dbab9efcdcfdea749abaead6e01235d366301b5. 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/USDY41762203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f45010303df9a99d108e5981a560148fefb152af14e61a8af8ad53851fb2f91. 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/USDY41762206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88ca702c8542b43ac255ee6a2b2084ef9817558913b84db824d5193b8cdb377. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USDY41762198.
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 0x7f3b6e9c9a51c9759347170e30ac3906a6d7581ce497d2da1571493135c3bff2. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USDY41762199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fa707b41737f63eb3c1c6548bd9cecade651dc4ac4805a4010fa232daf0cde. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USDY41762202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ee012ef45321981314d108da29a8ea573ec2dd78ee7033e57588894a35b4ba. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USDY41762204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605ee9ce85ac90eefca4556232973b257e2e2b5bd3191a65701d378206c66206. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USDY41762205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b80405e835a2494f72a8ff1ffe473ea716416d5504cdccf6af307042b55a1a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USDY41762207.
Luz, Una Navidad Celta En Venezuela (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62e512017f83ad463922b82060bfc081445d45424ab6d067d9cb72069e7bf2. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/USX9P1219011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73308ce97c8d29662bef8ea646b8274d2fe3c2423d10ad1deea21d89fb6ee48. 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/USX9P1219012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69e62ad286cc2c258d3eecfa46ef737fa02368197b34aefaacc72154cb978c0. 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/USX9P1219014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98255efd43e02ae1cb16722d675295da7e6a673b6ba89a0171a28f687a6b186. 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/USX9P1219017.
Paz, una Navidad Celta en Venezuela (Vol. 1)
The Time of the Turning / The Weavers Reel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1ec228991c6e942dbfe2bc32e51cce64c8f1d55ecc69c08c40cae43827b53d. 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/USDY42181944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9df3c9fec609ca182d0c0402a52db942905a7f9804999c4f784e0373bd6a926. 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/USDY42181945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa738c2e46e14c510cefcf340ae7e2f4f83a489373348215e408165cc68764a05. 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/USDY42181947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2efdc45d3aadcaeec758b3717ca1a019dc5755e963f9711306155c20758ded. 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/USDY42181948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dccd620b92bfc16cc447929d3b1a013534429e001579ff918e7ebd236b8a907. 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/USDY42181951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2940944bd48e65780be920295d806e2ed5471c594318edce22425afdc611a49. 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/QZTBE2352528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98715ab04473f06bf4b731fa93d06a96c67b7fd1a8dd95b9e3d304398ac9dbdb. 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/QZDA72471639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1a133dfbf4e6655cfae99fe45226d1724040c465872cee5489eaaa0d6d3e03. 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/QZDA72471640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305f0a597ca232a0e62773c990e3c2db710e54a68075fd25d390eb3346ab1c06. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZTBF2378818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea219e9649330a43b08ca4ad5c1ca93efd5f564bdb55aca3d6faad43a087c3dc. 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/PYC502000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5d871d2820eae17c7079df65fc5b490ef8da99e2ac64436f1151fbeeb78313. 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/PYC502000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd85f71233467ab31ba5ec374a8802b484d9bcc71b13b5630ef5e9b396fc4368. 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/PYC502000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e73616a660459432f6c8284dc8667fbcbb8faaeb304cdf4b0c67e3850f18017. 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/PYC502000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bdde4a4bab46ada93be821242516690413b6af492171f768287f6d00545ab3. 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/PYC502000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2c99703c68cefbd5e6156df61f6904665ce9a42fc0e27ffe3d280ca360cbb1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/PYC502000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83154c05bcc750e4a95d50526ca8e5b4d2e6391fb81c814f082b2ac7f1ecc48. 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/PYC502000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6c7be0f22039f5dd6f41cb49fb05181945ccfbcf9c94972688bdbe02736326. 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/TCADR1807337.
Desorden Orgánico (Rarezas Acústicas) [Vol. 1]