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 0x4a3617f323695ff8a19274e70d2d1481990d5abed04c3e65e477f6b3a9915b35. 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/6a38449f-eb4a-4559-b3e0-5478c4ab7cee.json and https://artists.proofprofile.net/proofs/artist/6a38449f-eb4a-4559-b3e0-5478c4ab7cee.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 0xf2ccd507827b13f658923bf5a02ac94c46a4073ef0a1093257f5dfb18414af7f. 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/TRBPU2001071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7e4475bdc94001d111c8d3c8eef704cfe58aae9f6e57ed3c3546651588b84f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TRBPU2100409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96322fa8fc7bf290e1e00283e972ab3b63b17a32f0644abe1151e52a015de32. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TRBPU2100537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5748349ebbb0be85fce2e31f3f211169fa712b5bbb906e0bf2c37fa4a9b9846b. 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/TRBPU2100538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8884790d7abd6d4aec76d075e65c5032b70624a7d73fdae03997b2025eca9a10. 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/TRBPU2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2806236687fd8508d570330a0b7954ec8232acac1c8ea4ca07e05fa212a784de. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TRBPU2200781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e1a557ec356b146d67ec3fddeb74f171e39b89e3b6753bd08c9ccbd2c0e01a. 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/TRBPU2200893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d84f954a6d872883c4c81e9ea56d7517083c65cd4ec61d79c670f8b05cc363. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TRBPU2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faf89ca704eebecaeff8a696585bbe7225fa34c411603394b54024e7b364208. 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/TRBPU2301275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4534f0204bc9deda7c8ef72b263d737d65cb452d52401e061bdd3666fbff00. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:59Z), 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/TRBPU2301385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9bfc396b369791ba98fa6ef6e7488116049dc0a6b742d4f05aefac910207a0. 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/TRBPU2301642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376cb44481b37a6b1dfead06548ef663d5723a2ecab64248fe3466ddeb993bca. 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/TRBPU2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0374a7d9109930f1fa6d53b7cb0f74d3e2dc846878ae0ab7b9dac778412ad4. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:28:56Z), 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/TRBPU2400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8b69a84ef278d574d3b75a103a051801c7bf91dc7b3f65533a9260756fe1cb. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/TRBPU2400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43945fe1c72c6ac64ef6955f9c19a8f2ec66036f133147cddb5b989d8a900a19. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TRBPU2400970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538c6a6a0f4b7063915c9bb0704b8d595c40960ecb401a085b0608436c6e2754. 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/TRBPU2401088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8948acbf6ca78415517422f85a3f86d40325b62a54aacbbfa72dcfe63ae446. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TRBPU2401229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce9c9b5c45333cb91265db7d609b8348e85a53bc9a06993ed422b1bdcfe2193. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TRBPU2500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d29cf12bef3b5e11234c2fd9002423f01fafb55de0ad20cf265301624bd8e9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TRBPU2501060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5401da717d1eae038ee7941b7396abe7bdc64950ebf7f97faddab5b206d84347. 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/TRBPU2501195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab23cd235cc68424b309c80da7c45a900bc801c748954339445a673128847e51. 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/TRBPU2501278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1210dbec8dbd0876e575aba3be38a4bd2987abebadb01d279cf637ecf81b0c. 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/TRBPU2501700.