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 0xb76203250d91cfff5acff30a026a6e0c60dcf441ab7a209a4809b290888929e3. 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/362614eb-71af-4fee-8c00-ea606936167b.json and https://artists.proofprofile.net/proofs/artist/362614eb-71af-4fee-8c00-ea606936167b.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 0xdc087f691ce8ca4fcd9f36ac8370fc67956deb29e267648365e31062b05aa9a4. 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/BXNT61902588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e80db83a5779c983ccb5f358a5859b194b44b542e06e53c3798f0d63b0c2f2a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXNT61902589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671f2e456ba65baf67d0a1166ae8c10a4fb3b726b6e0288f1dfd7381e6a1b505. 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/BXNT61902598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc605e0188c986640d8cd06c321c44c4db7fc34bf23d4f00516e77695895d338a. 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/BXNT62300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e8f23f33e75881622aa65be7cca13332f64dcb8f7cf4daa9511b5e3cb50c69. 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/BXNT62300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4ca3e28bdcac416b4b81392e18b512fe3a33ffd3a7c1ddf0f322c9bf4ff1d9. 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/BXNT62300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af9e964953e9bd24b418f1700d99b56deec6083939d15f3c10b5685d32eaed6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXNT62300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70abe20a6bc5f52737c3fab18356b03e4d7844ab76a9fd762b7e32affe6535ad. 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/BXNT62300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a346b847ff4ac21cf4d69a0727037668b21ef46f313d4a273c80927bcce80e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXNT62300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0a2d00be01f2a7f5348099d08866b2dfc35accb451f572376c5ce1085ac00c. 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/BXNT62300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b96b81f6cb190b0ed28c02d72989dee175d62cbae1282f21492fa85e7e536a. 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/BXNT62300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e6a8a1ac11ff1a0b61d7500620a90539cdcff53ca4bea79966e9d4b37d24c2. 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/QZGLM2162167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ac90405b13b30f7fa1ab4e69f6bcaf697c45f53b7721e5168f0e89631dff59. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXNT62300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872c2f48181021c189079dd7a763e323b868a345c0dd609bb7c9dadf5aba800. 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/BXNT62300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ad894c842d390a97e6508f65bf71672faf421f4eed449038ef55d39af932bd. 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/BXNT62300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce5e250e31e498518c30eff3eacf0b7d27a0a87d0618c736cb676a8eb48a66. 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/BXNT62300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3ecfb616e318ebbc67123bef7c46df0bf365c2e0c10fdf91211b7550307f09. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXNT62300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a132d4819f3525cee007f2ebde2aa78f5849596cf410d48a0f37bd33ac01e1. 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/BXNT62300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dc9fa19136649e8471e5237821937cf4de0827e67df138dceeb4621a058f07. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTPX2121820.