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 0xbaccbd4d190be9689e1f8b8af151853b99a75e3355dd4518d1a04f25d8f1c482. 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/0b2d69a4-5a79-4647-9142-f26d7b195d42.json and https://artists.proofprofile.net/proofs/artist/0b2d69a4-5a79-4647-9142-f26d7b195d42.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 0xbccda05a1e8b208a0b5979d53f7b2353b2aa6edadd63aff221ab7a3b2cca117e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLPF6684215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff56c32d984d9e44a9ebcd58f097cc0e6716b948d42e8949e7e312b02f41ff17. 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/GBLPF6684226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c56a26a8db5579215a1c751bdaa343eb3a5d2c458dbe93870e6f24fcd1e8e4. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:07Z), 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/GBLPF6697678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05ab75b602d6689ee95588cba5b20ba7e808511ba9f4f676eab77d482cdc47b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBLPF6728922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f4146da4acf4807b72a5f0b948c8880c6ac593675badde82f2487ca27b2c5. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:49:16Z), 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/GBLPF6721305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a7a435a3c2f10082b95b35c3fec632d45f3db0d5b25adb93cea66fc4f17356. 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/GBLPF6756619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa321740711f81255ae3e4f3470fd403f5ebbdcc8c8d01d1e7420a9f800a41. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/GBLPF6782739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b5a31b98e98b1c8f5fb0d179a40903e7530491d503796d11f0eb085812c0e4. 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/GBLPF6795856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78172bb6e24b1262aee70054621d7551a4ecd50ac08ba2cc6f845afe35243e9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF6807761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43a1dfee7907388c38580ba59524514e700e3c05fa598757914ab3c72e6ff33. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:47Z), 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/RUAGT2476662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d1c84fc3126abdca5286f5e4a0b53687a8109459cb38c2d4006db346b305ab. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUAGT2476666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937d63488de88177aa79eb85c3037454bdcf195e8a213ac9f52e98743deb0c38. 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/RUAGT2478560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f155d90c42ec247736bc7f4c810e4476d88f6b005de6195a0c244e2eaf660a. 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/GBLPF6808587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f36a0111b7bf59c5807c2fe8ca89f3d6cf41327bff57c8d90c9c0411b4fd0a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBLPF2500463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2086f3053de601441c605d995da7d5e58abbb441323675d70a638834c1b19d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GBLPF2503339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbb4343bc5524de84998a4f5b4b45a4e76055efbdbcb64682f6683d2cd0eb41. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBLPF2508695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fff54558c1d53a86b18d76e89bf8e1e9106fe60582bc148dbfd9de74d2209f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLPF2515924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd0823e4c5a92bf68a80b0bf87cc1b590963ea4580d1084b642de199183d526. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBLPF2521036.