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 0x3b19163d3c05824eef142ae5f57a33d10453725f7e68e8614357f4a665a11c53. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45a35d04-7336-4315-942c-07d732586234.json and https://artists.proofprofile.net/proofs/artist/45a35d04-7336-4315-942c-07d732586234.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 0x5a209db28fa7ca20584747753484f2b9cd04ff0a66ea62dc3d073e8b70d92900. 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/AEA3A2568700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b39840712d95ed408111ae8e4ebde0b780080a7e56e9bdb33bc88d4ff1663ac. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/AEA3A2589545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a9407ca5d48f35c342d6a795a89de10e79a12e1e9b5a4de6fb438a31eca625. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/AEA3A2128746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e14dd78d40624aabd3df2ce023fb08c514b5e9090e1b911552141c5e1eec3b2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/AEA3A2101843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf09cbe3ef7dd2413dc30bb2553e4c56021fa2c0e41e8add3473fa2ad049f5a1. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/AEA3A2587507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe964ef485636c7b3e6b75351fe39e585c22bcb277f8a7092c0095686ec09fab7. 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/AEA3A2504877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55228b1a8142ee3ea95a654e5cf268972a41b318da1ce6c0cba608d145b1a0a2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:17Z), 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/AEA3A2506602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ec20091b6634d4c9012cb605b85278f5ee8099545ddb64560ded5203364b29. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:25Z), 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/AEA3A2569524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ccc9068eb849a0b8e0928e1be4d5e5a5d5db8f92f054107e08e6a74a2baa6f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AEA3A2525125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6c3f25027b7f61843328903e8a429164c8c340b952fa215ea3a6c787d8ee71. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/AEA3A2583918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc5223edc5d89e756cf075da6dbca4ef3063856cd0c755dda1927aededd4e2. 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/AEA3A2504913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc79aa3287ab5639fd35908b0a84b9949900945781423557760e88fdf922d14e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:21Z), 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/AEA3A2552694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d0b9418af5aed00aefc51f2ad2a92bec94445eb2db36f0db92392fcbae13a3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AEA3A2530464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee784517a451aa9a1a9a26d656cfa1ebaad4031e03f2549c18747645e52f8aa. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:55Z), 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/AEA3A2540226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37f8753b02038387317c3be81a335c8d98fcd6073ec3d9e67395284e987d370. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T07:22:58Z), 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/AEA3A2545555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672d6fd48d136d01af7d7ab630d4fb6f7f855940c731e085fe20449822787fa4. 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/AEA3A2558378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0054780ebe049e71b57f73e0fc7c13e18497346b44fd7b61e2d758d07a093d85. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:41:06Z), 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/AEA3A2506229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6376e8f0f3a0486510fbec8caef67186266bf3d29aaf130905deceba07d46252. 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/AEA3A2589430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483d583ccedfcc6a3741332f0b85947db44263dc831b24cd663200da9f3ee0c5. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/AEA3A2566003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab39260621cf57e76fe8282192d9a63833ebb56358043ce747cafe4693944472. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/AEA3A2558447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f51750a0f92505417ac027d0039d7df8dfd3381b067db6e499b2527b2a95fc. 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/AEA3A2550584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4cba0bbf2a0f210585bca1680b4e2a4be2cfe4f33b79dddede11cd52c5563e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AEA3A2502662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee522c5844b43acf17b07ffbad8d1057e5356be18e3c833bc2837564c4b36734. 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/AEA3A2533364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db51e4dbe4ca44eb6ea4d32f6cb818927313f13aa3250c54c0b2fdae732cb3b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AEA3A2538198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9590b2f2594333eb013aff1de177d3521b1ba4989d6abfe6d5b203eb9909a49d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/AEA3A2567205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3f6f7ef6d936617252f9e9354289e1db3f77e14db2803241d3dcd64a9c17f5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:59:31Z), 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/AEA3A2508848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe16fb64a734eda3ce5b324415aafb83d7fc17e35a783dc4ba771b16931c930a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:20:18Z), 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/AEA3A2547987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48cc9b1edd4c58612db2f506989e72f6f13a360ae7d59ed6e63ca1fb5b5d546. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AEA3A2163768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088864f1ec6adc2e8ecc472e6ca358e279611f3ea30a8b6cda9b87cf71b1537. 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/AEA3A2137189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375a3ccec7301c48573b0575608ff7ba03a5469a5fa910baba77e1bca0c6b6d5. 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/AEA3A2139408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d1e0eb18ab898aca71c1b155abf5911992271d1b811f32f1c9427171411fde. 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/AEA3A2113835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e2217f71f9a3b0bee0c4fb1b6f9bbb6a2d67ea3fd335781478c1cb2ff8b316. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/AEA3A2130590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b559ba8ad65cb73ac2fbd04189967a33f6f7301a14cd3df59a122762fd297e. 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/AEA3A2197284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7233d4ceea8ecf2beebb9df9e8f0c88c940fee6b8b6bcb0db73bdc9775bea36. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:26:13Z), 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/QT5M42577226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129128b5fa033b4f3b968232ac1750f0fb4e1c1e70c77be03846a9464f23c327. 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/QT5M42569643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904d9880d8af440c13a24ce397c25c3dc341e0ce0f50b0b5edc233672ccfab24. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:02Z), 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/QT5M42504421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8d61e6828a784feda025b56e668972ff490ec8a50d9bf8f30024a15d658b85. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QT5M42561330.