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 0x039d12978757278dba5b1c1fd97e425893e0f357e1a6a52c2140a0196d17ed0f. 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/e10d5e62-0482-4f09-bc02-807a965785e9.json and https://artists.proofprofile.net/proofs/artist/e10d5e62-0482-4f09-bc02-807a965785e9.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 0x563b59cf1f6b84955aadf6dd862d6a00d8db37b939a18a0b0dfd9f1481db11ee. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:20:34Z), 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/FR96X2346369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdba4d9d2a9c9475071198bfde4e9b92579c9944bb7a650c39069e581d47223d. 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/DGA072463189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3ace9376b80d5a315f4ad74140ef830b901a707cdca6789c85beee2c509c32. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA092427495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe003233d9f347565080dee962d5900389b092104582467df53de766efb44d534. 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/DGA0M2470017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f6ad7b4c140224b8e4d8a4e7968b00adefb583bc490e9f703f91018fe407af. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0H2497362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838b50d0d4fb6cd319fc374e61326324274fa73ff3cd5aa46e993b05071e7f7d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DGA0H2497363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd151882b3654f5e1876463e2683d91278ab519f546d2ccfcdddab4efb3a0c47b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0H2497364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8d4fb4b33a4ad8cea1c282d8c4b3cd9f69856fd185564fd7205ba48777090a. 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/DGA0H2497365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62e7bbc5be4a282d0986ebe89156dab2a0f6568ebd91ed6f0a76aa56099f27f. 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/FRX452566866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b60b11ddc86cbd47dc2561909dfd4a555eb5f3f84ac888bf28a9db8d0933a5. 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/FRX452566867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f07520fa191c0f8eff269733b21e10bdff07d13fd2c6b1bca0cd88c624023c3. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:05:28Z), 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/FRX452566868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dc05759b22761d445fe78fff5d507d9d4177f5e616a5b5f7ae136ceb71377e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:53Z), 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/FRX452566869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89970358fc4ed979ff5e6c4a9184ae5e13713a8115d3a14623f199ba51764d2a. 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/FRX452566870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1443d98a2a1fdad84d0b0365136dfddb65abbd3ae289b08b691ab07d007430. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FRX452566871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e9d3a3a34e8532681fe9150d46bbe28260854892241fa367ccb9e9dd8a85bf. 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/RUAGT2462511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7654f76066c43b6c2767620b4347fc6db462a15561a1526a1e6382db9caf8cc4. 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/RUAGT2480426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed2c4e67588116ca75dfd90db1f19326a83f7c23a0e47ebde6be59dde483022. 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/FRX452581197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5093a6c3fd367e096ccfc6bee234036851c2ba22e278e6923ac3eaa5f38e338c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX452544725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563d6ecf95091612495612857dc08c13c0c020e6428c833232614c23fdf206c9. 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/FRX452544727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9735c30d2ac86fc6a85774af65948eff08ac8c291e5b5a9105db1782192784f1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:01:40Z), 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/FRX452544728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c633ac4ec95cf6be901d3f158a92c784fa0bb3cda7de573b5af908340596269. 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/FRX452544730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7660ad778707d1d07f9172cb51096b9c2dbfd3c9e585864cb717e4ceed1082. 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/FRX452544734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fe4d09562afb018670d6fd3c4cc0e37427ca2341bd451afa2292d0d78097fe. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:25Z), 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/FRX452544735.