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 0x4aaccf85cb2ea01131cc9867c37fc42716fcc46d4dc28db19e5af985368495bc. 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/2f8d7606-5a33-4696-ab66-a9d648cc1491.json and https://artists.proofprofile.net/proofs/artist/2f8d7606-5a33-4696-ab66-a9d648cc1491.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 0x6a617b20f45059ef4d3f534e73067d9793dfc05df41e4c85772cf7808c96937c. 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/TRAAA9700986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dd8af683006d18df0451da7a1b525feb36c53f6593b1ae4326dae404249eed. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:12Z), 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/TRAAA9700988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bc90c833af60ab7bb735055d4a84f51a22f518fc5ad9c55a3ed23e8dccd356. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TRAAA9700991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920083256ff7b54e6193b6ea9e8871b8b8b40a1b4c0307db1d94da7f71cdc618. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TRAAA9700992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6d30012bc74f1aaf1675042788e964fab6573860fe73a5d86183a733bfc483. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TRAAA9700994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849187293dc4835d9ec6036be0f5cade337757bbf9871e8a113a9e8e47c625d2. 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/TRAAA9901695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe303c7c899e29c454160eb661e57be03c2bf06eb22a27164044acb7c2247431a. 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/TRAAA9901696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d7e1d5f0d1b0f6faf721a9a81e580fa87b543e281b60458a86b6fda389a60a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TRAAA9901697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842ddcd3c22f6a8abc5a159316bba726c6f9b5e20c4f787183f808654f6e5c06. 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/TRAAA9901699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ce8dbe8cb93002e494d96da4d5f3d04cf6e8d8893ccc12246015fdc52f2682. 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/TRAAA0202055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9efdef1746235da001f5a60953eaed7dfc46a86a9edb3596a0b3ec91e51cf90. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TRAAA0202058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939a7f6887c48a0a24ed0580f0f6b60846f8b5e306baf4d6715da4c34a380ba5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TRAAA0202062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8382491fa360bcd8cf9be4d972bc9de11bd60fd046e5a7a031e74f4096bd5d5f. 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/TRAAA0102031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6b4635b012c77aa9ad633d020b42dc284a88568c3d2d9285eba181890b6ff1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:35Z), 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/TRAAA0102036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753af1fbaff53397e3a19127c84717cb914ef6b170e186c7f59b208acee778d3. 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/TRAAA0102037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27ee4639e079885ac1d12be0724ed211b9cf3917540e1b37620cc096ff2d3dd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TRAAA0102038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1178b8d3a66d6c65a64b6580d3c74690188394e771c206c857542826f088bf45. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TRAAA0102039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0118020c4d5f0ecf7158adb7cff260753f55decab01ccd1169240c7eefd301a7. 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/TRAAA9700985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0c1043a0dfa0a3de2381cfcf9c2e79321d1b10f1f4989bf77c46889a9594e0. 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/TRAAA9901694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e131a05c857b54ce621f8b26b1b34bab88bfb98fba733ddd4aa130338f89e21. 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/TRAAA9901701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf086d73a9073c8adc62e399c3c5d591762b30171c2508355cc70ddaebb0cb6b2. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TRAAA9901693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5df9509d48856fe2675b24eea59940ff8b873a74421b53d76f29e216391ade2. 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/SE6XX2539480.