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 0xaef080cefe0a338d6d09a1f307eb50ba53d4a1e90e17269090d15951a979d9ed. 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/94f4bfb7-7e97-424b-ac51-1f3c50a6fd53.json and https://artists.proofprofile.net/proofs/artist/94f4bfb7-7e97-424b-ac51-1f3c50a6fd53.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 0x872cf81f2ade3fbccf48cef376454debc9c53c1ea60c4198aeb51b72881a4580. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRP621700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c1e2361071094e4abfe83c7bf1ccfe6f3b620be2830f42449a26f0cae33313. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRP621700810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17b4127dc6403e96671555e6567a30d1adc33c6a17e054692a155a3b457b2b0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRP621700820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170e3aeda389749a39232cb679f6a0c2416e01bc9532c32bfdfbce6616e32b8e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRP621700830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85214769de37cc6d97e1bae32f3fba86d94feade7dc67c5fd97a782340ecd2a5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRP621700840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28272e9012e4e06dd38dc82ab6be0eb8cd2c87dd49668932e46fc262a9ccfed5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRP622400550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066f2d2bb70c3d3dec6a3f005094ae2b6b6f3637c0db5a059aea0952f3764a58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRP622400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2194cfedea81a8d4394a78408f8b4a163723dcf3b5402c1b5cc19f9a1151c3f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRP622400580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327ad5586ce1258f1d46410d4cdf40725ec1128a300f611cd9f01e704ab7186e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRP622400600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386551980f2d85d683a43c770ff8caef7de8e32f0eca043c1b34707f27829cce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRP622400560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa8ea1a15df9ff19f63b557296336370aa38bcce1fe6ea9be62a37b60269525. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRP622400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28272e9012e4e06dd38dc82ab6be0eb8cd2c87dd49668932e46fc262a9ccfed5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRP622400550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d686ca3dded1aa2f6cba8187fac89f42a3d8da3a163417de1655255f172f20f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRP622000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa6735d1d6da1a8533dbbce4f3042734cfc281daa12190e575f23b5e9601185. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRP621700170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cc3885bcc94b655c4c6b5a126e49ec2eb437b33699d400697f3a4cf6c99572. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRP621700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab5d5b8e72d731607b4b8cc37172a7e26731e33c596e5a5c27c6d9d44485620. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRP621700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee89334dbb5479df4c510b8c91e2df73c794f01d05e7826d362b79e7c2294749. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRP621700120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1987b2b03d175460a9232e6703aaed24e5a2c44fb7698916364100414f9a83. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRP621700130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cc3885bcc94b655c4c6b5a126e49ec2eb437b33699d400697f3a4cf6c99572. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRP621700100.