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 0x6b7a6402b0f97d9cf869d177a50965ebf391a1e4fea0b9e069865645cab289fc. 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/d966a3ec-7717-401e-8771-ab01ad09cf66.json and https://artists.proofprofile.net/proofs/artist/d966a3ec-7717-401e-8771-ab01ad09cf66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stick Up Kid (Prolix Remix) / The Watchtower
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 0x1475406b97e8c35466a03a9444235f0954eb9ebfa73eb0481ab2ef3b70f7219d. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GBYJW1400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac252c93657e69ff2d3f966e8f35c8ea7ddb1256bd87d6cee77a9ac575344458. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:01Z), 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/GBTMZ1600409.
Get Dirty VIP / Welcome To Your Nightmare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb5d666abf5418d2b4bd7902c9381fdba32b81bbc967c704422baeb5499c34b. 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/GBTMZ1700716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242c0055ff77f435b84fb031bedf6477c86def5efb007ef0997ff1235a5e2fef. 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/NLCK41048706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47672283961776e525e009a3e6fac9813288c0d31e36367e16107177820d5631. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBLSB1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc773b6ee8bae685cbd5cce2fd6d62429f44ce012c7892955e17792e6fc5612. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:56Z), 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/GB5KW2204275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd4e108a2a6a86fb7cd123dbbe210e3a9101d15606cd104d641b853c349f5bb. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:41:47Z), 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/NLCK42224748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50576cce804b107f0095eb3f62f986bb16c0e4a219b40fce941b33ba02b43f99. 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/NLCK42224749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74148647525614efdd8e717bc0d5b974d88fb07177580be43b9d504daea69008. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLCK42236271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c7d454f92682cd70ed61d30aec434ed151ee7de66b59d6c4cd379346cd3a90. 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/NLCK42236272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ee86dacf3ddfbf85a84dfb1208287e9ca69298a8ff7cbe3268337a5fba88b0. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:34Z), 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/NLCK42411029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3334103a3913b1bfd8b209df42665bac308e86f8d7e07455ea871efe9e0670a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/NLCK42411030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d87f6dcaf89b60320eaf6e329fa67bfa1f12840c0bf09cf3db6e3d60172b650. 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/NLCK42411031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff1f986b869a25e1f828b5d04bd53bb66b8bc63a411b08dd3157ca4c5b6f22b. 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/GB5KW2105096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719da396f8e599e882cb380db8b6108c8906a24663b661cef78e7ae155297d85. 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/GB8KE1759250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb1c77544591f3755f3d9d176a5ab384c379a9c390a46384e89d083900a0a2. 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/NLCK42225289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57065b39780f330ac355ec9aff200c5fdf8561a8a897c21d29758a44aa62b948. 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/FRX282259831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8249468156cd63ea0755ffd1d54c1091a4481e8c1b32fd4f68b85e5d71f52a. 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/NLCK41056089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edbfc0b822f729356a71ba928aec629423a2a7d0369e65d12807dc8d5d836bb. 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/NLCK41029111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe8a1bdcd471307bdc2645696e663dfcb1861d4bfe5a6947e74b4e62196a9e3. 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/GB8KE2209029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ee9423c32bb899f19fd9d367a9f612e731f531fb78f9f969057c8d1cf2216d. 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/GB5KW2105090.
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 0xf18d3e423499b5bab7d898c54fadca3761468630061235426f1182c64be34800. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLCK41033453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eadfba29d156a2fc7837e3a1c956c8efec22b5bf15ea8f01deea77bf9d2542. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/GBRD52200209.