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 0xb45d6b7431f47a5965651ab0e9b972eabddc1b39d6d1a35b877068b6d3cf441f. 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/71f53178-80a8-460a-9d88-f73d4142559c.json and https://artists.proofprofile.net/proofs/artist/71f53178-80a8-460a-9d88-f73d4142559c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Unleashed (Frostfire's Festival Anthem Edit)
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 0x62dd36534bfe9ec2d64748bd3cfd983d00cab5ac1137882b546db24fcb0471be. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CA5KR1806167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ca85884df4fb71f1acb381b04e2fc156b6212431b7edf55342c995ae76e05f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBSMU6775332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8236b7a76d4921c53f20658559407111df76b4f5522ff2e6b5d6faf33cf5d71. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FRX282074634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19286430ce1749b878dc533d58b76df4aa18b9fa3bc6f9506e7b554f7a688591. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/DEZN82122893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7207bd58d34f44dbade7de6d59693b1e4ec079e6e0eab52fd3caeaa8a60c2739. 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/GX4R52240076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c03f29a848ad75b971b0ceca725236ad5230e23d75cfd81ee08a9da8f02504. 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/GX4R52240078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b4cd0455362d972e4e896f5e2105a26893b1a664d1565d176d0f93828a0e9d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GX4R52240079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2235f5add62491c25e8d9806892a77c4d1f48b67b34a5fc1c46124cbb1d84abc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GX4R52240080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36741df3978daa7c71550b8b0ea297f6d91ad36cc9474b4f02b0e389bdaf9493. 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/GX4R52240088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe114a889fb180463662d025a6945b0e8b500c83ca8ff2c1bc7c7971c963b6662. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GX4R52240136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a8d9d3e79fb84db34d37947cdfb9e4a4960d7d953f29086cf56b27c6883116. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GX4R52240138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3245966cb31d94de12d6a70268ac940ed3da9fdb4c2e2abb211c8b25098f75. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBSMU7434220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4840f45126905c2c9c74b33a342c49ccd1ee21a54544e7a38dbd02e19fcd03d3. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GX38U2262083.