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 0x6bd3ae69955e68d55fd3bd2094c73e64b17bfcc42def20e06af8778cfc128fba. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb0974ee-64b1-4270-805e-1390cd6a3704.json and https://artists.proofprofile.net/proofs/artist/fb0974ee-64b1-4270-805e-1390cd6a3704.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 0x4a7e8538ccfe53727e758a8c64527ab798c63a62542a52c52fa43e05318dcb97. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR6T50804301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29897a7a7e92e6e5c2a78ca7136d398d417a484ac39170ad6275e974a9b3c23. 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/FR6T50804302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1d1cdcc7a194b1242f767bb4d7c82cc595f094794d43bacf53d94fffa3b989. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR6T50804304.
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 0x6c483bfae3ffe66e4999dd4e8d3180b51652e8d26fb20ee6fcee0ebbc07cf48a. 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/FR6T50300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf087d834326394f52f36b80e24a7fea1adf7c4b84c052c380dfa49c62111567b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6T50300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e371b0903724212db34de2702bb463bac77ab3437c0ad11da4cd9a005d89793. 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/FR6T50300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e155b1dc0c383967a58d93ae5ac72182cbd4553a36ce4488f2507892763b69c. 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/FR6T50300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7775b0cc961db2e60490612c65199532d8193b3669e214b38c65d11f52ccd565. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6T50300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256a26bb290e2e7fc6e34f6c318af73e64d741e763ea460cdb9efbd1136c8734. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR6T50300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bf535deedefffda58cabbc8fed6e2aa2e77e64988f407bdc50b899a9599702. 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/FR6T50300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb445ab95b15c9808ba1650c9e2a4da9bb2f170971b006c2969949ee4a5a5eae. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/FR6T50300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafde3a5b3a456a817d240c69a074b0ea77f4345b12e171dc4e37f2daf2633bac. 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/FR6T50300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fbde75a0d564f01cfdce0c7dd6f34432be30e92d1ebe3e9e7586877d3b4d38. 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/FR6T50300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8379b09155cd8c5f427bc3cb33c4344033cc4050f8134516b361b895f33751b4. 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/FR6T50300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fbfca50344971fd84bb7b8543d039cbe024dc98a866f040f618159aea5cf4e. 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/FR6T50300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dae4c91bdbf950a365056cf1d12af569d822aa6bc026956265bd43d00841647. 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/FR6T50300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1b8217dba4fcdf1dc2c00dc780477ac51d4bd08feefc8c32af5e4e20e93711. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:00:28Z), 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/FR6T05095601.
Cowboys & Gangsters - Social Disco Club Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a502b83e6df057fdcfa8ad12b9967930660b92486d0c73d884792e93511272f. 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/FR6T50905602.
A Day Like Today - Todd Terje « Friendly Children » Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbe5c09d75e0a04fcf70df720ce24e8b7a3cd35b3a3c58e911cec58d1c8887b. 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/FR6T05095603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb419d135d5917f84379d1ed8835776d29cefadfbcb5b315b12d1e281011efed9. 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/FR6T05095605.
Tell Me That I'm Dreaming - Greg Wilson Ze-Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53602f7be68e429cfb52581aaf3448b0306aec8a5dae2c8c00c94c6eb209de5e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FR6T05095607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df00266362c36dfd64e793386cc8602b20523002b8df78f968675e40c835864. 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/FR6T05095609.
Tell Me That I'm Dreaming - Traditional 12" Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5b4f0cd065eba21912fbad9e4dc35a8ce0b8cf242538b429f127d528f28a9f. 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/FR6T50400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7775b0cc961db2e60490612c65199532d8193b3669e214b38c65d11f52ccd565. 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/FR6T50300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75682f24b4243c1d868efd82b1fc55480b7737492a0d142c2ddc97a97a74004b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR6T50704803.
Something Wrong in Paradise - Larry Levan Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15e79cc66007b0b0fa8108dc4e83736c8fc3026428c9ea9d22991758475f330. 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/FR6T50401413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c483bfae3ffe66e4999dd4e8d3180b51652e8d26fb20ee6fcee0ebbc07cf48a. 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/FR6T50300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298614a281839d74edb7a3db6b53be822f9b87bdba51c383b96529a821c3b796. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR6T50300223.
Mutant Disco, Volume 4: A Subtle Discolation of the Norm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7ad7c91ebbd9121102dafa60555b13d635cb3383a77e144cd52aa43bbe88dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6T50703712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529b0789bdea3f2b14d678227e399654ae1fdf639b98824b996fcc2be322250d. 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/FR6T50803103.
25th Street - Dave Allison Mutant Disco Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0740c87992a532394ae05487d8b0db6a102c4774b7b2ec722042a4aca0f9211. 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/FR6T51206607.
Cowboys and Gangsters - Scott M Mutant Disco Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935621e71d3aef6b902431be0c55afebb7d1a22e88de416d457f5045fb73f2ae. 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/FR6T51206613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e18d8cc098819ef302ada60c072102bce290a11434e946fe0e691fb772b29ae. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:05:29Z), 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/FR6T50400805.