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 0xd3f0c786a5b3c58f85138a6ee0f9b5ab785673d4ed716209614be1c2fcf03ea8. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c47c76ca-e0b5-4b24-af7a-a181b67fcfaa.json and https://artists.proofprofile.net/proofs/artist/c47c76ca-e0b5-4b24-af7a-a181b67fcfaa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dancing With That Kick (Why Does Your Dad Hate Me Instrumental)
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 0x2ba4fa31cbfc58f03716f91fb3c50bdf30b239fb2db850a625f7f5f3cbe83868. 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/QZTAZ2410455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865276a095c6f48d194fb8aab3493982001d129c495853ebd511845cc58a9254. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:37:24Z), 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/QZTB52472428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e5b3356a1b7fbc117b4214bc81b794163552d7ec010823fba10ad757aad2bb. 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/QZTB82474914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46ec7ef969761d2ace93cdf5335b253196c0874b40a1456478523133a1ee3dc. 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/QZTBD2456523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0ebed847787ca95e302fb013bb092290cd43aa8f3be2bd8bbd2124af89f974. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:52Z), 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/QZTBF2425569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8914fe2133883839de0fc5cdd63b3821fa0f846ec324a5f8b9590783c726f39. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:37:59Z), 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/QZWFX2471071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ce1ebb6dcd53312cc47b8b480d8ee5d2e0600ccb0c8144aeaa052ecbc17ecd. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZWFX2471072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff47df3b7e12c6712c555d86ba793508ca63b7de2f228e9a77d3a387c94e8e0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ7Q2409572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffa084c2d09511c542f1507f52bbe8aa97d8781e3ac2149bd6b045daa43d45e. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/QZZ7Q2497116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb56739fcc04225a5d30bd0ac90b50a5ac55985bbd675fd4052292180037e83c. 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/QZFYZ2589495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55707e86f83e14f015cc65bbcc2f0b4740d858eb15730ce5ce136c9ae2bc43e1. 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/QZFYZ2587803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb201deda591a38294645bc9a276645b0b62d745632cbaff2344e7078f7c0afa7. 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/QZDA52531243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c4300f7164944cf780efe9cc29957d9d870d6f841fcf9dc76919714ccd935d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:10:14Z), 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/QZHN62566023.