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 0x80a35b9306cb178b9ab6ee8455d1faaa1ff8f3de84ab31dc4c0f16efcfb52233. 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/d9e985dc-0a50-4006-9fec-e3a71ceef67b.json and https://artists.proofprofile.net/proofs/artist/d9e985dc-0a50-4006-9fec-e3a71ceef67b.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 0x199688c7cbfd6e48b4f75fbae039f590736962e4d1eb1772a1cac9656bf358e1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92461045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8d3025b125293b2a731dd672641151ce7aabc4dd3226e33e2bcdc16d2b9549. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92461046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1491ab04b01cd97fd35e25fa20e99c2409511d36c2e5a2f357ad053f44aafea1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92461047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cca9bd2dbc5f5afe8750b02cf7b5e041ea6c9f07c85bd45d3daa83e2ede021. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92461048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66339abefba5108b35b7496837f33db38de583796ad2c94dc2c3dea2eeb39520. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92461049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc64f1a83e9f664f0f9fc5ad1d665afea0a288d882d935fb2b5bac5f9088ef8a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92461042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0496dab099c9e8294a4d42ce1768ef3eb91ac03a32765031947d639d6f656caf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92461043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1103194aa576d3b0d4cd8e9d0fe5d62a7b7da8354b9f02eeb696d1d0d50e5fc6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92461044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7601a2c58b32bd12953aae840700360185d5808e61d1e0c5eeba0b128502e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP2214589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29776148e01d49664054450a6d8514e4b615410d1bfee9e657c179f62c28488f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP2214591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a6dc3e168fb606c8c8ab220f4af957a3edb0ddf05769816e3d453ca508bb23. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP2214592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dac9563231cf101c4de178b88bf49be017fe166ce4a739b4305ea7cb977404. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP2214585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436926e9e0b4384ce74a05ef73287a292571f8f8b6daef6bc03c4fe16a26e5b2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP2214586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cb8d02497f3b511992681ea1aa85dfaddf4f1bf9427b2915ca87894066be9c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLFP2214593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bc1c3770e3551bb9dbb593b11400740249701dd8dc24e87b494bc077b32787. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP2214588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d2417189d55305bbd2c0020257a6fd7f2e43d5acabd11f5e0f650504c97347. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP2214587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abbdb9e7673ffdf83bfdc1c1309c605a6cdeafb56f6c04a54baa6bac9fdea2c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP2204626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4d6b2dbdfc1501ea544fc69604010068f13fa1a1265a8c7ee05a69bdfb2950. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP2214590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abbdb9e7673ffdf83bfdc1c1309c605a6cdeafb56f6c04a54baa6bac9fdea2c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2204626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda655c5855f97a5401c71a1404dca0ea92449c7a7bc7194918e057cea07d525. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2468125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9fd04e36e696b2d6b5bcff5d7ad6315ec019db7395b3c5535357d3c7e4b9dc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZW9K2468108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0456d8e0549782634ff06b2d571ee64b81a45539e44258975e5f13d1fc57ac71. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9K2468223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf937f33ec59987da74756304076c30d2f0e537bb59cede1cb891387ef426e7f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZW9K2481235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c25e75aa83940fe4d5647ab6f206b9eb3931eeb5407712f2cc8d0415e79984. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA22593848.