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 0x05e600cd033b88bb5425f23598df91f50d2ed4dd1f1cd94f59337f1727fecadc. 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/8499b9aa-d5e1-453b-8b78-6e3ae86bb1f7.json and https://artists.proofprofile.net/proofs/artist/8499b9aa-d5e1-453b-8b78-6e3ae86bb1f7.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 0x7ac9fd7588cf1e9e07419fdc690a6dedad7d4134a932df6ccbc505b4bb260319. 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/RUA1D2117077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aefa4f7db546e911889a4bd069669b3f0d54bbc86445319967d585e5885d0b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUA1D2164856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff7e8491d3bea7120c917dc896f67469361a2ca10b07a6f1ea1bb3cf21cfc40. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAHJ2310748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0857d3ad130b028e47771468ff2fe2f3050a4d47641c9b0c511da66734ac8359. 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/TCAHJ2310765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f64d46d29abc47cf74d989900f08fabd4497152f238dd47cc6e23f3386e35f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAHK2377053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842d81e9d310c9f128674076edd0a55988bcb56764bb33b32b4d05d1b5c82f78. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHK2377096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db7da1e0e10c5f4900b27cf3e9af513304f4af18fd11dba041c526428831e86. 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/TCAIB2431522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1e25a6d199643fec04c07bf38eb09793f780aab319a067de119911ac7106b4. 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/TCAIQ2413706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b64c8c69b612ae5dc43a5d863d1b908ca8619091a6258c3cbdacdb531ef5be1. 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/TCAIU2484526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00ea117e683d346ddb616eb5c8404289706b9100d128b77754023a428372dd5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAIT2484544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f93c109bd0a58c8f789078f200e8dee0eddd25d3c50b012f617997c7ecc6385. 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/TCAJC2475839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332fc773225eed428d5c6ad10ccd40d7db3b18dda5558140652a112ab83b9bc8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCAJH2584601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f324708004d1029e1513ccce2e890a93e45d1a3908d24f05f7bddaaffd9b9e6. 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/TCAJH2584669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeafd32702f7bee44d59ea687eeae2ae3f22877ba1096786f61eb557b9341989. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJN2579614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b5877d6bf5f2bbbf9963d9d5f8832f0731cf10235a71a0222ee816ddb5eca5. 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/TCAJT2544330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d9c7a8dca11287d8bd176c146c8ed884249318db3f3cd020c4d13d697a1b85. 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/USCGH2431004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5823546b9dcb898566423bb98837ebb0ff98e51b1424558934d31a5ed4a8cd3b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHE2397019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f377e6315cad1c4c179b638dfef91483794357d9a8e6e0becdf0716924354e. 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/TCAJH2525172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9fcc105573ad2961963907c4f82d86584bfc87289f4792db2b461a7adf963a. 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/TCAJH2525207.