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 0x81eb81408376724564ca586f5c5e81f28cb68c48ecd5b7cd970b96298583f016. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e06e462f-099f-4bda-88c9-6870eef58ca6.json and https://artists.proofprofile.net/proofs/artist/e06e462f-099f-4bda-88c9-6870eef58ca6.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 0xf4374a607e835d124cf7253b355b9c5e8b6a26b5ca120e0877b02c81284ebe3a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:03:58Z), 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/FR9W12348155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4374a607e835d124cf7253b355b9c5e8b6a26b5ca120e0877b02c81284ebe3a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR9W12348155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc62d680a834f517f0229298ca10c989da26336d06cf891dffe7b33b4ef43076. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCAGZ2339672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081fcb2ce74f20a8de168fe886e3e3676bf0d46abbd932330a5d2aca92a70626. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:31:28Z), 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/FR9W12414509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86daf4ef74e2633fdb0a8c054ff34eb4a68f40aa57957fe9469025a6473e132a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:19:51Z), 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/FR9W12456560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d437ed0c8ac305119afd180f86735327230cc653c58785b173cbaa9b3ec706. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:51Z), 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/FR9W12459265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86daf4ef74e2633fdb0a8c054ff34eb4a68f40aa57957fe9469025a6473e132a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W12456560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdca934749a5498b5d8967ad9b8d572b2c413d3e38493a41a3c9c53f83be4ce. 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/FR9W12459259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d437ed0c8ac305119afd180f86735327230cc653c58785b173cbaa9b3ec706. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:23:18Z), 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/FR9W12459265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916be929ec54c98073cea43d2b511cf94b5419318e31ba4c992677730b850725. 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/FR9W12459257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84c5403e916541759e50b94e98d85859bc520d57e69dcea7b35308893b6b71a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR9W12459258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdca934749a5498b5d8967ad9b8d572b2c413d3e38493a41a3c9c53f83be4ce. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:50Z), 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/FR9W12459259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cd714e0581592e8e3cf6fd6c560dff3f561872be0eb94e9864b5c366c08c85. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:27:49Z), 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/FR9W12459260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa6613e81df0d576c662b861af029a4e0a8d66224a6125175c97a7a80e57a3b. 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/FR9W12459261.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe673f92332ac47930e43b7f27f14a5be11b150fbae9edc68f3b2ffef7322b56b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T09:59:50Z), 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/FR9W12459262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8b47938fa431a1057a17f16631c1e8126a3d46272c25898786a783a6cef2a8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRPGB2430600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d437ed0c8ac305119afd180f86735327230cc653c58785b173cbaa9b3ec706. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR9W12459265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed9168a6d766412ec4613194305b124ff8ed79c9f3809f06dab5363787da884. 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/FR9W12459266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917563339895e894ca16bc241484f6a002cdc197c5b52f7b539eaf6c7f860a23. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:00:22Z), 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/TCAJU2579376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f136bb92cc2d92f5e62f8d9503ccc53d2b9380976b1652a7ab7d51fabb10cf. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT65X2521976.