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 0x090e51607455ea23c8e724d56697d124e498fd1d020c45cb74a66092d4ade342. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1388248-7afc-4a1e-b7cd-f2702e567d2d.json and https://artists.proofprofile.net/proofs/artist/a1388248-7afc-4a1e-b7cd-f2702e567d2d.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 0x274a41bcba137de114e04154fdc8ec9ef0f56108f5715f382b478d9ec0f11e99. 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/GBMLU2325302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb210eb570cee8a710392d100f208ccd2ff7d92103478efc325addcd787d158. 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/GBMLU2325304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4f7954686d986551384c62354e517275619d01f300584948306a7d5dd7e86a. 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/GBMLU2325306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5653fa1b8283298dd9303a2872515dca3563ee3010f94e6050fe858063acfb12. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/GBMLU2325308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9443fdec3de4c03aa5bdb8cb4bb5a7609ceaae0c064e686e7238880728caf2c. 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/GBMLU2325301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7500014b56045925be4e21a79a76cd39aba550c4797a0325acf106c7bc82c33. 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/GBMLU2325303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff268aa664f79761c3404576f104badfecc1438787bf4a3231e076dcad4c132c. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBMLU2325305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9143593fad797e39d0b1104a82b808ac16885a669add618181fdee4178754760. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBMLU2325307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ec3fae19701a24e724ebf7db7e4cec45cc18dba677d7fdc5701de63d0a1265. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBMLU2024001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6937a8e48d9d209abebcd9bd8b784cf9c1028deb687f20e31170cce870599441. 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/GBMLU2024003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c51948b924d5aaa299f47a8f861df113cf85303106374803a3e327a4434b2a5. 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/GBMLU2024005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f04abbd5c8d1b6dd152762098992393157e81886f8284e96685a781a69eb39. 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/GBMLU2024006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22053be075c33372f487acde6c58ad5eb4ca1c667b35d5fe89f7ba7f90e945fb. 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/GBMLU2024007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb310e9a73cdc2c645edc54dffa85d616039600aa4da5f3d192d5d1c45c479b5. 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/GBMLU2024008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8055a3e1473d4dfcaaecdceeed05c549461ef794cee1bc80e30e571eef8f9461. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/GBMLU2024002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c66aee854c8405f9354214515680fffd0690fab38a66ee7ca1c9e4de1b8c2d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBMLU2024004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2994c63baeb1de635bc307e8579469dbee670befca4ae045551c816a6d59efe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBMLU1822001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51ac36014d0b92909c0747e3a2cc53a1dad8c84ccfa3ef7b0e3fb178381486b. 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/GBMLU1822003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e836c24aa1eceb414f7560ea8b24cfb3659c3cd5c38f74769d865bcb217a0e5. 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/GBMLU1822004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52157c00a88f62b88c636a30bc3f2ab6a5f5aed40ca7434535dd9d8db0ca6a4. 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/GBMLU1822005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96321754e7897b62557d82834a50099555c64135c0a3088a45f9512417e30ae. 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/GBMLU1822006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1e5b28d26179259dc673e5355ec41231922fc6cee86d364123de89e4ba9c1c. 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/GBMLU1822007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f9cdfa8153ff2742b1ba6229a6f4c87fc36902420ad59d50c255ca4ffc560c. 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/GBMLU1822002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8452d7e1f4ac1c214bb5f20de7e1a8f0a4c62169ed9271f4c0ec78e9f2e5c0ef. 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/DES562210030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3199acef92eea0076eda10e35eeba3e5e4153f06fa601d9af0f5dc6298002e8f. 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/DES562210033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d96a80019a3d23c454402e1b5c05b8f378115973e187073709239a2bbdb53b. 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/DES562210039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4071eda00e9e08fc019368022ce695bba278d11f33d5e3411eaba653a925f026. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DES562210027.