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 0x4afb25191cd5e1ee89c1d770534344923fbc464704993c74efe4aaf8401134f0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99df626e-176c-4aec-84d6-f2f49393525a.json and https://artists.proofprofile.net/proofs/artist/99df626e-176c-4aec-84d6-f2f49393525a.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 0x18b72eac86c80e1e5be3b0784e170f5f73d4f3269ff861259e7e087905bbf4cf. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DEZ901500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518af17437f0be1a958412448252df7c7dd8a9c4309f21c8387441f012da4b58. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:44Z), 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/DEZ901500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf1a39dc10411093266fae34f3b21fb649bfdad957890b851f05882fec91d8d. 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/DEZ901501500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9104f2bb653d961bbb01f9625c4ed9cffb81ff292ee4c759ce7c04f51753e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEZ901800186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92cdc5a2a84769ed699dacbf4b885535842c172e091a48c672fffd6fdcd20fe. 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/DEZ901800188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a9632aac180877f7cb633f7dd4ca9c648374baf81188186ba21a94f53014d8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZ901800189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479dd20d9f810dedf3f521b6320924989e27827f8da10e548b53824475252b81. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:43Z), 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/DEZ901800190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87849f395d0012f9492d6cecbfa8144ee227504c64c615bb16caa273435c6ae2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:01Z), 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/DEZ901800193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ffc0c125021581d50c02af5990c4c11ee6cf31e0e06492816c46d947327820. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:05Z), 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/DEZ901800195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea638823ca0be3fc7f5af3af8e7079c5efc3cf739a1c2a872d77d609c41ba9a5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEZ901901309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d40d6d85f76dc6092024dbd61f34252f6f4d343ca0f4f7c9a75d9e300e73b8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZ901901310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa381eb5b74d3d19d131f223e9de5c370a1a76efc205091b172a07e672f1f0fb0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DEZ902100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2709ef4de591dffdfe3da8031e6bbf1120b4947a2a49315f411fe9ccb708bcd. 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/DEZ902100757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e75fde97ec6b0e9262cb7b2f8383140a46428d67746880dcf026c3ea52f62fd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZ902100758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179e4f573709281415182bb951cb864a512496f5512518f20ca111e0a2c989d0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZ902100759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d3f522572a4df5833129755657d632bd2a94413181c272f2a9c1e52a29ca1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEZ901901311.