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 0x275aa7942fd4d7a51c941f47a8a95ad8ba21761cbce5b839efe579dac709c83e. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c24ed46e-b830-468f-bca6-1ba5067ae8dc.json and https://artists.proofprofile.net/proofs/artist/c24ed46e-b830-468f-bca6-1ba5067ae8dc.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 0x6600ecb9deb6914af9a661490c0642556d2a12020f871aa6858d48a95e2353e2. 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/QZES51857062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe294d985a42fee1f44d226bd30934c29641f3a91700ef3d47c8df6d560b10414. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FIV5L1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9a4351037094b162ebb9f779df46b575c8129a136c8fe3be13154c7e98d71e. 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/QZFZ42259803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06796cb3b8c8676ca242a4c6b7ed6d6a10d12849eb8355bc9bf804b348b477ea. 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/QZK6N2082577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48913ab77a6826c9c9a4dea131629906d325aad96b0c6898debf1484e43fa0c2. 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/QZK6L2186769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f7e8661aff41c2a54a66b2c9e27dbe0e3aaa7bbd562904677eb1e09a83b0a6. 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/QZFZ42259808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4184ddc732e4b80dd9f0d77dd656fe1fc65c682a1bf9923e5e2eb718e107a35e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:44:08Z), 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/QZHNB2050422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e04b395de1b420cc7616ab75291785dda3667cd0bfc7778b55d09db8e57305. 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/FIFCT2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5841283e9eec7ffb492ba4c3bc150235e97390088f52c62930fe846512105287. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:38Z), 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/FIFCT2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd78b3c92e831f97d12de7084c618c1eb514c0e19d6f57cf8136345cfffdc1e4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FIFCT2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bf0ae3696a87133a7529cea5b590bd9b6c6ebf60a0051a2c7d1534e5102487. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:41Z), 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/FIS4U2500002.