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 0x2099b05cb2dfe49343a3862d52421c06a25d6dce4b1512767a069f108dfdc439. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6dddeee-d1fe-4eb1-a824-4923622ecb9f.json and https://artists.proofprofile.net/proofs/artist/a6dddeee-d1fe-4eb1-a824-4923622ecb9f.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 0xdc1842c972e04f91e6dee5e0149c4919a7bc35dfd0d18b7edeaad393f1140505. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLFP2077731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd585909075938c37e19f85c577bdf5e3e91f5407d83c490b019df4640be31e9c. 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/GBLFP2077735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240946e5c6ca49c008b64d226ed6d5323c0e87dc448e63fd7e7c9a7bfe26aa89. 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/GBLFP2077736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406b89f59bc304313e9686bb143fe5f7ca15a6a747d078d34ca3df3ab2e305e9. 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/GBLFP2077737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9af6d637362b96f2ed288dfda610ebbeb62522c546b5acdac2b093b7bb030c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2077739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eb8f3f681d3729f46a6504c61f49d87faf083023ec3ab8e6cdde720d1b3205. 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/GBLFP2077741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f7690ad34241960b6b51ca278af87454fa1d7341f3b5a775f719a45f7ea5a6. 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/GBLFP2077743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95da60c4377ff536a1a33e8be58a1750623e05574a54f985e9ea390c283a320f. 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/GBLFP2077744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733b248ffc6ef7294ea5de7cff9fb271b623dc9d83966266fce932081440ae22. 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/GBLFP2077745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8219bd1b6ecfae24c6dc4e94d9397d3782cac645b0a0dbe8862ccd9904e67ad. 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/GBLFP2077749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b57b4b5c7ec4a363b3d9562cdd550b45fd6e91f6c48f470f379e685dd40bc3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBLFP2077730.
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 0x94d4cef92e3fdd9c536fe0bea92f36cee1b6f5e714223a8c8cec3ab31b6556be. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBLFP2077740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9b1994ad12763a2347d4e2439fe7683e3291d12b195f697af3bccd4e66aeac. 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/GBLFP2077742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe71be8a91e148fd459fa105cf61deed0513233ad2d564283c5461998304f048. 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/GBLFP2077747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d568eeba9c2f6b375bf3ae49731f94b53bf0e456ec7393efd4911e249e18de. 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/QZ5AB2358597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb930d06453f8f412fe3b085a2ce9d718810614667f303d028dce5a39060babf. 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/QZ5AB2358598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ebcfb931a832bffa06b15565f10f1cdb4a617a07f20a82a2078fbb96eaef8. 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/QZ5AB2358600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01a930bf1a3db6d7cfbc68c534230a1b43627a871043bc33c5351930e9aa53c. 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/QZ5AB2358605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe8d00d152118d3859d11a3293c3927dc00d468963bb750d89782c3ef1f782b. 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/QZ5AB2358607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6e3eb66646136df1bc75ce1fc24bf73eea4d3eeb914c1d7e2de9490dd83648. 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/QZ5AB2358609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a8ed2c36411753dfc9442bf38187e9c3dcc65927d080e4eaeb04e3e419e787. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZ5AB2358608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a135268f0d83ee0c26d1f0e7a9ed5f57db967240238db90aef61cd55b27e90d. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/QZ5AB2358599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5127b3234aae2b9238d95a92cd551e8ff145781dfb77bfd6d43b2a76c9fd83a5. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZ5AB2358601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73ca18fce39825e710f34f2a997c51f36f6788d204926d83add5c9af9660146. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZ5AB2358602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c258a79a4d7d5d92c63259c97e5959fc0075cd1cc8260f4f4949456aef85f2. 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/QZ5AB2358603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881091b3acd8cfaf5c3a485a07aa36e85c1ea227687ed15c567de2dab52e875f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZ5AB2358604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19f1692f5fc1aa87111727f3873ccda2a4a2cad699c76520c250c0cd019d7d9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZ5AB2358606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64a8079d6e8f70ffd5bcbe8feb292b2e04971319dccebf300f667a54156424d. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:08:24Z), 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/QZMZ92533415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78101f6bd23f65ce9d22ed769349ad46fcbd0d5d499d27f01cc1724704a168c7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:13Z), 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/QZNJW2589517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9945777f4bc707064c5e145ed40c42ff23cf994f741dade92f5b0b70b4d1b2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ESA012053049.
Tankehology Mexamafia: Xx Años de Puro Hardcore Puro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6137528a96a16e1524d3b0fbd906092d84c4b8b010eb1d1d3a8ac5145188b295. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9N2205493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb487ce497eaab0eb090956a991b82589e6bdecc58d90b997778e82af20badf5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:43:22Z), 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/QZW9N2205498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ba1992bdb63e3ba4da5a14c363ac9e9d605d92c0611be31aeba208ca8c5844. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZGLS2403531.