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 0xe7c261277c9abddb5460084553e083ee415914111ddc29b4a6cd5cee75b93a0a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1984e4fa-391e-4110-b0da-8e4795167b02.json and https://artists.proofprofile.net/proofs/artist/1984e4fa-391e-4110-b0da-8e4795167b02.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 0xcac2f1d4efc605e2efd7c565211fc4bee273d2951b0d1796a4f19481bb1b6dff. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/LTC591600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45486cdeed5029b24291d3ed47964f842359bc13ba98393a6d0813c992100381. 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/LTC591700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd0b5070842029256e55babc3c353666f865e9f6ce53954670ccf88f7c512e0. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/LTC591800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc67fb2c39ea75f2c02cd7f79c889ec72fd8e1c55916fc03b7a1eda09875cc3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/LTC591800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bb5145d80f510d26bb1060fdf8c70179714d349755f32a2e274a9359e4c377. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/LTC591800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8a41cffd4887ee88b33e524e164f0fa29ea2132a30b1281763e07a0552b9b5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/LTC591800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa852c2dd3fcf0e362e96d3b8e47299b39d563c3b21e1e25c91ad96fa034ac89c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/LTC591900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3e1a668d41770433f64c5be3be285e72261f630c9fe2fa0938e87b39da9337. 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/LTC591900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c691919fd93882da42aefddcb8b0f7cc3dc484bda9a05ea23ad85e5bc1f6204. 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/LTC591900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d97450ba26de2f106f96764a64c162750dd77afe9b75cdfb9ce44e668a724bb. 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/LTC591900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501bd55d7e90251b7e312338534a7e747c7be6044da9b0cf17c7ef6333f13956. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/LTC592000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092723adb7a58a2302b03afb6158b4b8cfc725da1022eb49f3d2a18fc1c15d67. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/LTC592000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0791d6cd207a17d60e2d109edcbfb5b2c6a4638c969b147836528ff183aaea82. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/LTC592000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd25c9af4fa4ca6d9a81cde32da8dfadf200d979af91c4ce74dd8e2c73fdd94. 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/LTC592000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c12ab5fbabe36097ca4dd676cdc4bda6bb1f3ea859a056daf35ea3fb596518c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:16:10Z), 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/LTC592000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8563f8958cc23d360a2740f998e3dc7b6debbb8206af2e30c6e9d6b81c4f3d4b. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/LTC592000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527ce808bfd59a14703b19c822f9c3d155e3cd07979ddeea5094183ac378ce86. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/LTC592200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d15a4c254150cbe32e6f3ebb3d3862efd66c1394efab08a58aedde63337651. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/LTC592300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6d3ad279e32bf649f33c559459a554a27321330eb5bfb67982e1ca66857b83. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/LTC592300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2126aff6768b03aba0f1dbc45c8fa6d87c8e0a64b06a1c78c4b58ce7d65f1ad. 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/LTC592300003.