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 0xf373dc9cc7accbefe145a1b842026a8343e59e133bcc12c9203d88caa9c89f8d. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00dd1077-4f35-4740-98d2-088cb42b83f0.json and https://artists.proofprofile.net/proofs/artist/00dd1077-4f35-4740-98d2-088cb42b83f0.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 0x0dc8077c65ea8a266267436788094084540781f63d8b995cb2a972a188e32289. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:59Z), 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/USDY41896887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b486a35658df90ca7a5cdd1d7abbdbfb0ac071dba03e38bbee5f80b05245af4. 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/USDY41896888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ea4a7190b125b850b51886f60b618528bc0e86b7a87ed59ff6ac6b9252edef. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:07Z), 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/USDY41896891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b5394abb91763800484e21ba30327cfdb666a522ed39102e524c5461fa5296. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USDY41896892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd370d5863b52cc6bd4bb212f97ca5ec24fdb7c11dc54a01d401ad2e58ba289a2. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USDY41896893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb20565a84131713f3739a3606d9549154bad6f67cbb91ebea9c17b5a604bdae. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDY41896877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52e11b6365d72ca4823e1c07156f7a9869e2a9b3e4707bf4581f61284fa8f2e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USDY41896878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cdc47600935b341aed3950c6f62f6a4d21d3f47284425b1152b2ee385a9733. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDY41896880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eee95a8686e000b029089331a07cfe760d61e41d23ea4825c081002beada10d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDY41896881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68a35ec300a3faf32378fb5734bfe0d1277b4ecbbb91a25cd030faa40809b22. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USDY41896883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f26b951ed17b6407eb85bc605f4e08ed3adfc974a5c981b4fcb43fd62ad1919. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USDY41896884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e95ef83d6fae49b07c04b2323a7969e5c0956e7664fe76bad1c833696ffc9b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USDY41896885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb829f251fb4b3e670e88816fb61ea4a76bf75353dc744fc2e823838900f75c7d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM21807588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00634c0ede2136736234a0898191bd3ad337bd2f27d3798022aa1a6f86d6da90. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USHM21807590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ae58e96ac651d5f13b468229e25b4e80341caffa109e73e76c5fa75c852121. 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/USHM21807592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5f52f2419d352b8e5577336420f1bfa6668e590766025c269534053c7dea86. 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/USHM21807597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403664be92ed33d5e6d6c67e53f62166b6dc8a79efd19af18cee69768b4fd92a. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/USCGH1856550.