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 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 0xd76c31a50e0f4a7ffc7aac90e107b7e79ed136be8e176247cf45d3ba077151b2. 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/088760c6-41fb-43f4-8df6-d225c4c13263.json and https://artists.proofprofile.net/proofs/artist/088760c6-41fb-43f4-8df6-d225c4c13263.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 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 0x519188ffe5a2098df5239033983e0189812d142f1f95761d55b25634c9ac5c09. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USA2P1000360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53db2548e67d8ff5c46aa835f961af894a7fb5890008f1b9f5efcf2ef592a063. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USA2P1000363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebfe15df98373ed5d942530b6ec06e15b2aaf81175336394d555daa0ef55fec. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:16:25Z), 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/USQY51187769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86821ddb3494966785a435cc9068a87c525fd8a21a0835222327bb231de62ca. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USQY51187773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cec77123c629da6fe8fea658eed91a3d1c4bc00ca7bea08a012f97648a8e596. 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/USQY51354336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1a72d9d2c9c672cadcc5687d7fde5e0c63f9d7f1deb874a60a21b51dfb1b6b. 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/USA2P1436913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88304204f5169d6e97fe2098a9688890c4938707eb1d67c6125a2ea31b2583c3. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/USA2P1436920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f00aa1e401ccbb81df6836b08d14032a512b47f4a62c9d40de903a2d8ef743. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P1436926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d04e148875c1dd94d54bd957f90d5d1827c8e0f99fba701ca52d067bc8f842. 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/USQY51730429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba75af571cd03f682f089c6f5b2146201c7c3537c300d0897083630667fc4e2a. 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/US3DF1720667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9125e1d80e24a7d655f30b1228b4697727e892182078be675c3f9a3f7f6142e3. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/US3DF1720686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56d0f789a51c218a121e4623c542352849102025236f8cce9f0e9cbef3bbcf0. 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/US3DF1720692.
Y Ahora Te Vas / Chulita / Tu Cárcel / Tus Mentiras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1006d0a786ecad4e3cf11ccf0de41e5f5adbf6802a317bdd586e8113c0f12bcf. 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/USANG2093441.
Nomas Este Rey / Te Vas / Tengo Miedo De Perderte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882e421c6f3e288cfc901706c4d8aef28124b1281c7a1b979799afd092470cd8. 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/USANG2093442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7364cd345a4d0a96cfc0c76cd00f89f24918606076686eeeabb6afc5c09723e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM3DF2184569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8c015f6772b4378e81eb4e0be159a12cfca2a650d293c578e2f377c4d8a7ad. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZS7J2247720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea445a9d6d8a4c9e4c32d9c1d3da2f97263146dd7cffc715d7a7e3ca5ca02d2e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZS7J2297738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f944dd4b7923874db441df46851275a59bf35b7fa0484b7cdb01c74b5f7124d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZSYP2384474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d22b84610f84aec3195174ed62581f3c203a9af092d5613efbc5485948ad8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:34:38Z), 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/QZQAY2315170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845ee62491de22fa419066891e4b354442886fe9654de2666e44df9eec560742. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM3DF2259169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceb0dd7bb604295336ffe91586f7d9c67707f09efab2f64c3025c21909c7207. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM3DF2259178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b592c3105973b288ee310b36d311bdc8177b68014b6ca020d210f86f87213b1. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QM3DF2259180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cd4a3d0069c40e2a8f7e9534ab3c3212983e502137f057cc70b963e871382c. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QM3DF2259182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d101bbd8ca5c7ed8c811dbaaca5a34270d11c08ff9b95ef288c7ba2e7656d8e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM3DF2281647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d457636ae9fd27d365120d4dd9ff9944c2ba9117143e7ed9a3318a0e3ffe71. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QMANG2236812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74740af1fc75cd1f89494e30ef4c9036d9d5fa56d6b538eeecb932440c30598e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:25:29Z), 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/QMANG2236817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af91ed7fa9a7fa5291291482b181a70381266d7d6a64a487bd6f38dc9541fd0. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QMANG2236819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a89b62e7cead3c043765e1fd35cbb4bef5e5bc1791f6347f6f037b7a3ab82f4. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QMANG2236823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07aae77cc85ca040bd26899d732f02c192563840230742c33f2e6886f5c5f21. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QMANG2236828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ec90233c8b07b84dee4bd4fb62218a775a578ab53c3a78a0681f4efd06b39d. 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/QMANG2236832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffd0ba461e05f297cb5921297e0701a73696473abf661f23d22134cb55d8c53. 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/QMANG2236833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cf6d512bba41ba1bda82fa37c30a50b37af6b12529fb283a9bcb0cfc010ab0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USANG2448637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df065c9a75c796374bf00a81ac56b388921477d03f5d37446075694ea55de6b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM3DF2425412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2df8acd686fd0d6a1f4be49aaf1877e7f3ccdb363f5e542c515bca8e81b47ab. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US3DF2477685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd0dee86804641cc91fd4f71ce851e67aa9e48b122c5c8ff13f3b1a187d1810. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2512431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b8b0755855b9c5d9d8c15903f2da72949f886fd1ed9c2797ed566d7a2155f5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USANG2512432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9899fcbe6737b41f8312a5de4a8a9f1740e01c0f261762cc0a4b882d2ac7f734. 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/USANG2512433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654e8dab292b200174982dc848c2992468c94ea050d93e3dce95ada13b19e736. 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/QZDQH2269448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ee37b5418ba727c31f732fe84ad6f7c9744c830c2db34f578d6e495512f620. 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/USANG2114653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5331b03f776ee109d0f40d4153ae20fdf5fd6574fbc3d7147b4126f2ae9ed1. 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/USANG2269465.