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 0xbc8c72927f1899654686f281c4ba6dda0898682a13d0fc1860724d766602c487. 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/79b91135-2155-4588-b602-cfe301b34f5d.json and https://artists.proofprofile.net/proofs/artist/79b91135-2155-4588-b602-cfe301b34f5d.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 0xb28c82523c43d836f6a7e766276a983f02adebe23ac2ceacb41d9ab04cee4fdf. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/MX4972201251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23753a987c195ecbac0d9457318928f059120876bf7c42971fb832fc87554f82. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MX4972201296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722466cce594cc955523fe15e0094dc6702d82053247e5f45cd7481644e444d9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/MX4972201304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda51d9b5981cac88a9fe0978189aa8a024989f1c8b7a5c7316fb6e8f0fc177d6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:36:39Z), 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/MX4972201284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf880b924578758472ec18be0ffe275c03b73aa974794b9facb5d88321fcd62f9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MX4972201312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29212f2d0f8d914d4f7d1b22e8d68c645a2600b8fc543cb377fbc3b0fe7dae83. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MX4972201259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b05c6209f13569b4e9e32620c959f6411311bca2d967ff46d72ce23a5303dc. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZ5AB2004794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4ef115cb2bbbdf5f4440ccde1fd799809401303582dae0992ab66f982a9fd0. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/QZ5AB2004795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb1ed7cc1b707c657c15a49a7c3b2557a5db91dc35e2ef69b643ffece9a7212. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZ5AB2004800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9224df603ef4d28d0287d53f3adc160be0b31d92633cb93ddb03ea72b815735d. 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/QZ5AB2004801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60be25a022f4374bfe71ffc3bde8caede78a920ee752d610860299c31c082fde. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZ5AB2007181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1ccea880c52b678135127bb54fe5088a7f0628225227a75ba3c2280b12b808. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZ5AB2007182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39b6c5c2798c895638fe3d1c58b0e204d28d679119e584bb65b46bf6f70b6be. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZ5AB2007184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0657feb1adea437802659d3210bfc813368281c4d2ea803c6d8a78aaa3141f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5AB2007185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7788c6461d2d317d45b5c152873b6bb86fec9394316e339e6ab14c3f20c7b618. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZ5AB2007186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc46be585a8839a7866047e9bb04432bd3ee034b2b1516348c7bd775c35b3cd. 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/QZ5AB2007189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385fd577062f956a73961c1240ba93f57e5101a84904bc5a96f75ca25a9c513. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:25:47Z), 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/QZ5AB2007191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062022cd572c18b00bd8d5821bedcd724006d736a87c82bb2bcc0104f7732107. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZ5AB2004738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67397168ffb56bf841aed18a7082fc6d59bd1d29df571322cbdb2b24555a48a5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZ5AB2004742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a9bbb5b994bec32ba8e4f73c1f416f784f70d1088a48c4b25a00f1bbda42b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZ5AB2004744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f4b37b7dd2206722b9edf94ef5bd7b6134b6640fb9984cef7ee9425926121. 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/QZ5AB2005563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d19f688112985a071b398b7b0574dc0b898302a21d2e6d1f92272bb9806bb4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZ5AB2005564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6f753f3fed012e221e54d4c9d84e719fdfef99f83830a548d0048fa358155a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZ5AB2005565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a068584b237cb4f9b27501163629f24e88e948a9d7d6660a1a1084c52cce54a. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:13:51Z), 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/QZ5AB2005568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1f55f59463a2b7ba9ecfc9b435cd5a42dee4ecf4ea60b076c21b0a08947353. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ5AB2005570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524c9905619599716e6eb90c2316a2d75626df0cfd4240009a30a74c4774aa9b. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZ5AB2005571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e1cc720390c1a1063a40f5bee2a0b0c55aa81271d5413e0e38fb020b11a407. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:02Z), 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/USDXS1703217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7685030493c80371a6261ef8a92a9b4635e416408b9715f10b984a75f3f2ed. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USDXS1703218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3d4a3e826a5db6a3b5770a87f14ec050444fac9c4ab3dd6c408df35e10684d. 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/USDXS1703219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064c9bc169bc165617178db1f07ba6eb21e753d66ea102c2f4958c79c06ee04e. 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/USDXS1703221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2499dc12c1d9c0c3d50de5cd0a1d6d075d34623ce3e2a2c2fdec948fbcb4b9b6. 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/USDXS1703222.