1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x63c4d47e05f7d0ad9f46dd8d58c8033e512476dfdb13f116ef99c5e36fd2b001. 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/c2953eed-0503-462b-9372-6120de853954.json and https://artists.proofprofile.net/proofs/artist/c2953eed-0503-462b-9372-6120de853954.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 → block OTSBitcoinBlock must exist at that height 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 0xd68eb75659b12f7c5e2e49b912176b3c05598053722cbbb775d7034084232ced. 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/QZN882235542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5043422395cb2342f972255a125fc0ffbfcbf7dba4aecca0e7f61ab5c75c798. 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/QZYFZ2306716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906f07c65675cb2ea8414f5d493f3c7a9fae39f3a2d8b13bd59bd32a2f6656f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZYFZ2332512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36ef45f210b5504ad93e31dfb44f761cc5f0441934b585fa94a6e432e897960. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZN882346986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd22e24ab688b166f716afd85081ab649da34369ca8ff890cf384f430bbf7904. 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/QZZ662320138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e623399148572d4aba0f4722a474d943060860495bef6dbe392af46fc08b41. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ662430528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a170f1f4f51f0b978d6c8249693acdb4331bddf80ca046279a41bcd5987fde. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZYFZ2439458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0200a4f03d585e037011a50a7241a4d69845396a3ec8421cb9626ab9046681. 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/QZWDW2402745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e0ee21542d5f825e1660129cde32b2ab12ccc6960b9672f5ee457c7883e601. 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/QZWDW2465217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea899b3384f341c10889894e4e007dffdc4c94967109ee79f90b2916fdb5adc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWDW2485931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead1d5ccbd27cb1c62e89a3fba98d146c733c17b36521e62bb31c9211cbf4472. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:04Z), 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/QZN882513757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0db789b27a6ee71bc3862859dae0c1662b2acca89f8c907cabb9af931d379b. 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/QZWDW2553489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459fe34d7dea166fc14dab926f26e58858c54577a51c068a8ef3f41dac223c79. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZWDW2564231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4a579ce18291607fc03cbb4137fc22aa4e708a3199b2975c28ea1a146d55d4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWDW2540546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0db789b27a6ee71bc3862859dae0c1662b2acca89f8c907cabb9af931d379b. 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/QZWDW2553489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647b6ed9af90bfde4bea59dbe236c9afbe54538cf8951d1acf0d8de6569a1f7b. 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/QZWDW2593584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded460239bba4b56a7d2e28453e77b4eadfbe5e481d3a2ff3e735fcf9d326b0. 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/QZYFZ2503207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872f3f4ae1b6e74f98a9c575a4eeb31ad940432749ff36eb4018649435540c64. 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/QZYFZ2510023.