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 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 0xa193d9c1d092aebe42a0860ff0e74fbe159bd756036c46961de56793dc32313a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbd83384-bc8d-43cb-b5c6-6345b19cfb56.json and https://artists.proofprofile.net/proofs/artist/fbd83384-bc8d-43cb-b5c6-6345b19cfb56.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 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 0x9fecfc8b6e6fc1191ac8027a7ed37c6a034c2b76ceb3dc3ab9de964e5af611ba. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCJPC2440673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c23f4af4dd6346aceea312ffd9f5208fe544593245ba17260c80fdedc16f957. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCJPC2440677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736c2367f4e207be827c9db447d3ae5e927f0063d14a0a056f0a364d0c228ab7. 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/TCJPD2596002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1329ab2b9a42d46b2008ef2da8612b94fc219118dca13023389c29faa5d695. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/TCJPD2596004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea952ce56c8a0ebb32f08239049d6534664170c09e6e374daf6da199cf9b80f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCJPD2596009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb10692aacd455bd26c578cc8097a8af52d882fda1f58050b418a3a7fe1a1702. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TCJPD2596013.
Who are you? (feat. Pxrge Trxxxper & X 1ark)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd82797d229870719dbbec259269a826b267ad98c78beda122452d3c53dc0a3. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/TCJPD2596164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3552693df4927ff8b1aed9fa0e8d6bdbe8a4ca9356a73a5abc0e147535f25f50. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/TCJPD2596175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7de412e92c4d57789d5572c0a9047a5d4ae2181e922305798eb106a9ba3828. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCJPD2596180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390a168ea942e204e645617a4275a251c94c32fea22df247fb47a1b13f89d8ba. 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/TCJPD2596236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83d71cf50dc11de593c410f3e601c845d78aec78bad6dc3e206a1a9de6e4ddb. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCJPE2504869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736c2367f4e207be827c9db447d3ae5e927f0063d14a0a056f0a364d0c228ab7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPD2596002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1329ab2b9a42d46b2008ef2da8612b94fc219118dca13023389c29faa5d695. 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/TCJPD2596004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb10692aacd455bd26c578cc8097a8af52d882fda1f58050b418a3a7fe1a1702. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPD2596013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7de412e92c4d57789d5572c0a9047a5d4ae2181e922305798eb106a9ba3828. 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/TCJPD2596180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188fdef43b30e19c293fe175fca419a815fa784babb3869ce034250293532dc9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPD2596231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83d71cf50dc11de593c410f3e601c845d78aec78bad6dc3e206a1a9de6e4ddb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPE2504869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cf18eaa75af5f0cabf584e21cd733bed1a477bf178657a3a7cc3922452364a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TCJPE2504870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9d417d603e2a2b4235cef1a7ff39d4a94d31befd8824f1c5ceda82cf2ad8c7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPE2504873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a984c5d6af2e2cf5e71740b2666c75bc5c2a062964f3bafbd778be2e85f015. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/JPB532400103.