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 0x0b58e9f46e5f7dedbf8f5fd8dc1c6af9bbbbb9f09e6482ec13a35e2d391d6199. 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/260c2915-5f11-419f-8dd5-0a57d01f018a.json and https://artists.proofprofile.net/proofs/artist/260c2915-5f11-419f-8dd5-0a57d01f018a.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 0xdf735d9fe81471bcff9f2941f73298a3b14ce73c1bdf42a5b873f7118073ac98. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR2X42402654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c4fb623c3ee6bb256da8af4d0b5a89073ab12009714bd961779b53c035c964. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR96X2471773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9470cf7e043c0aebb13ebfc00669b66b236c27400914d41a28ac9cf38259a20d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX282458801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9de14c1b68b9ee51354fb9a77b847615b7faa186dd58980b64041784d0e500. 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/DGA062450689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529db5d20969eeafe27709a56f0cc7ae550b9ddf78474962bf5cc80bee9d999e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:39Z), 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/DGA082466912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff1328107741efe21f03a94bdcde34ef5a3a504525d483288c7fe082b25cd02. 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/DGA0H2463922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832e661b6f53271d4282a5ad5f894edbefb8a8157f773b822d6638827dbd934c. 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/DGA0L2474174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fad35e292c39a3083d65cd86d1dde8e3c3b2384fd738acf498ef642d29ca6f9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA0L2474175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f079767cc2a13f70cf843a16eb3f03386a046a471d2b3a9655ad22372934c6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:15Z), 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/DGA0R2468164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dc01b98a2339e4b2e8d737b8c9906e56d84c31b4ea5c33a1e058b147954e46. 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/DGA0R2498513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef482bb3d4085b2a85272448483576f01151f7e0d24bf7affea1238cf2415ed. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DGA0R2498514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbfdbb686ddb88d15db1b1981e57b498ad6ed20750d82f2cda1eff337f28183. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR10S2524179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1514826a30c56822e1749da9afaeb3d206b2bd73635200fda26dc90371d80. 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/FR10S2576818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f3316c62807b06b309886fd3ef0db8dd477187a23991491e14139857afb11e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S2576819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ecef681851afdcb0451f1f6a03357f0ccb0ba5638f5dc6438cafd7e98162c6. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FR10S2576822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b03fbc39f69321678f17889bdb6a55df569203ceccc338ab83df7bff686874d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR10S2576824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4011fa5b605f4643eb7b520f5ac6535a73868ff33ee3642a68df0817d317e2c5. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:51:20Z), 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/FR10S2576828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435203a2b01c1b1ce32dc295069530ae1a95e6d6e13d5539f0cc0e02cba1fbd9. 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/FR2X42507953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de60730dd5abbe0cccb3f62afd5d9492282a4591c75fff9b965ff899aab7f32. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X42507954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b97a6b3467ac4a4d565308ac4b15cc1b110f2672aa7157c6fafdbad42339b94. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/FRX202500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3844713d4ad3ed2aad0df1ed9af64e891a9d422da762fa86a5a2479f87e0dd. 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/FRX202527353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f5258642216712738dbcb61589f79dc3f78e948bd771b67e4b485e94194fd5. 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/FRX202527354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31af3991c4526f751865695421a9a64c6c357e47d4d9b6b2ff6d946a8251de7c. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX282552814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7cb193c9a22b614d9ebf04728fd574b587458d06ab03a474e6c09c023eeb66. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX282569612.