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 0x2e8225d595bfd0c7daf5244b42da6fa26151507335e96244c566a9239c95f5af. 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/2338cbd1-7b2b-490f-9b53-67064a1098dd.json and https://artists.proofprofile.net/proofs/artist/2338cbd1-7b2b-490f-9b53-67064a1098dd.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 0x2d3c54f6173d8647b999fc94fd22182ffd1de6fa4d0f817a670c9d9debc864d8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GXBDS2396281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455dea9c100173e4b26aabf714f1f198831054a0d861a9f3bdfcf562ad3ad9da. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/GXBDS2391626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1bd903202a24ce5b1f9f27f2eedd20389a64b59bb932a8ea7c226bd78c5aa2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GXBDS2315506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc210d88ad257fe5437efa0717e0a9c412ca64bd131c58881c31c24c1aafb5b61. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GXBDS2306748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbb608fc9b3fcc1bd5cb2d0606ce426c517f94419dcaae61d7e78bedf61bf20. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:20:43Z), 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/GXBDS2329440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07d91271dbcf3ca018faf95dad8eb3b0b1296eac4afc805ce2755c1a5fd0e97. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GXBDS2317671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf96ac4eaba88c370bd18f9e9d0cd7de816b7bdb037ad7f1197fbef17488e71. 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/GXBDS2357415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37125e4b8dfa53172f06dac39e0199a662ff2aad47a161ffd69076c7190b7ed8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXBDS2350948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b45898db09f47edb39800ad1fda2e5a48ab9d5b16f62b27e36dc1c07c4cd536. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXBDS2372362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cffc21ad727ce1ed24b6a1e640c384f30d008954239fd296601c5ad422aafe. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:58Z), 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/GXBDS2338379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd472d6b3167aab25a59156a19e22d93cf69085efef011c72c4d287dd1634233f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:37Z), 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/GXBDS2363042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9aadbf7e653b7f79f2a5e0f752948983ec869d8276356e38dcda2673ef06d4. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GXBDS2321346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38d7eed90301d594141932cb597bfa3c43e5ddbbae4f66e047106f162a8685b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GXBDS2382964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa6e0bc221489e0f3e7ce23bf8bb039936f62d96e1fdc54aba95773da8e6e50. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:22:00Z), 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/GXBDS2341985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaba81c2cf57eb725e7c1ba01a68b778ff86dcb81f6516b63be3d963f5292ec2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GXF972451227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ceed39abc4284df36d645b4a19588a7c71d89ad894c05a5054d907433891fa. 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/GX4R52518857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e8608d444e31c5d5159a60b63a161f825359867c1fa8ec572c6c38db6ab6b7. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:06Z), 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/GX4R52524037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff89b325a36d8e73c611c13d4c08cb85b7d08b7eb412702f86834b800b564865. 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/GX4R52506500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f95d2b1cdfd91af7962b8fff608b325836fd552bde12a821a053b9881cafdc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX4R52561866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3179e343954feeea35fac7cf237bae001516fe370b2b4157416afdee177aa9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX4R52506351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6bff3b041dd485047429b3027906b222497526dea0be520a6fd0eb17c4f2de. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GX4R52588220.