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 0xa8e758e04ffd5bc23972b3df132aff892ca6ee4174509711716d54ebe12c80a5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d418eb29-5519-4078-8459-c0e1a66e1d19.json and https://artists.proofprofile.net/proofs/artist/d418eb29-5519-4078-8459-c0e1a66e1d19.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 0xe8c77d4d0080707377a2f4b5ce1dda0f0f9c76ea3b4b868393b51b32f6299065. 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/FR2X41801045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f784b157ea1f349a0e5bedd026c231a25558fefca2ac5d2f0129c743057c17. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR2X41801050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b26cd64d42e5386c4c34a7cf1529bde7c9f1616cf64ff03232358a83b3956c. 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/FR2X41801051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92669527e5a616f30266e845a3198d5be76b11636577c72f88d73dd055b27b27. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:46Z), 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/FR59R1863213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cff548dd05a6b1c675b2ac5b5b936cead28c25448a2a6a5a7682d69ef41a300. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRX201806623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0493e2a0333bdc3eff0d221f0695ac13da968b0fdc2249156e0b3df736153552. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:01:10Z), 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/FRX201835675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8784c627f8ff66063757590f581e652ebe6891d76d093a7a984af99dc529b681. 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/FR10S2093899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa459e5280d2d6226f33b9375bbd01d6d4f9ad1edb54a6bdde532fde0f8c4d0a4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:49Z), 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/FRX282068566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ac8d85b043dcd055c29220bb3f8882a01e01b6973b4682a7d90b474954a8c1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA052051611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f5d0e2d42d9ee60276b0d54edd83ea216be98befd68a04e0b2242dd939718. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DGA062034814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924451bad4f43d9a5e2f54ea23e04027ad7f0363377abfe89c5a99662e3b775e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DGA072120278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a8e74fcfc9decc96fec82f7a20b5226a2299444f1b68a4b4aa21729ddc830. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FRX282147811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37d1559f663631ea0b3c0da2c052d45b36718fd3ba654f5bd5a2db34f671f6a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX452114559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8dacedba73306c9dbedfe0807f50c941f9adb5ac2ec563e42fcb33d876addd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX202513206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c83755137700dad1d756342effab8e764b13a7359a62b514409a6db01fc5d91. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX282515802.