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 0xe13dfe74371c407d258ba2191368b7338aa24fb27c6f0f51e074db1f56a12420. 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/2bfd6fd5-8bfb-492b-9a1a-6c50cffefaf4.json and https://artists.proofprofile.net/proofs/artist/2bfd6fd5-8bfb-492b-9a1a-6c50cffefaf4.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 0xf4aee9665c96c81ee18717ee49aba9e734c4c3104220efbe14d1326c91b853f3. 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/DGA062260353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ff593c5faba5b403669519f25c9ac074590f7d1a204fa1ef4da340ebf3ac5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:38:08Z), 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/DGA062299163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128f1c051f2d174122ef4b5477bb15b7ce7ce784f5e41a24c864a46c0e79b410. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX452380050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d301152999a5d69b9b4381c0fa63276751daca7a5b68421affca0b2962279c5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX872392355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf555b74d53a7400a601b7e4fcef6b351c1414c0d330dd7527062ee6e4c4195. 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/DGA052368845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700a322c815c520c523e6d9909a1c89d248aeef08dfc7a01833377b6085952b4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:40:25Z), 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/DGA062375360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeef9c6fca8233ab42878eb3e1d8005a8499bdaef3b4a15b4df2f9ff5ddce38c. 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/DGA0H2316106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0213b08179b0fdfe38b9f7b968b5154a7fe84bb91c75567c743f3e3275194d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0L2397451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa101c197e1a107c7b9cbf0daedcf4a0720324cf3a8ace8bc79b9aa09305cc932. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/DGA0P2381605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b789798374aa1418a7b7bcbed598f2e0baf2d5ff41187d00954009e8bbd6de9. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DGA0P2381583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec95349ef2139f7f18f96af9216dfc7634ae0060e90c010e7c386b1c53772c6f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DGA0Q2327841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d95c5766170c2236b895d90419d7f37c12b018310e9678260345ac4f8e3710c. 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/FR59R2418560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d1cd1a37ec15dd8d7b1cfdaccf4adda54969750e545000ef75827a300b42dc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:58Z), 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/FR59R2471723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112a99f090356189ed9a96e8ed38295bfe8ee6ad752110b073f6da317a4396f8. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:25:21Z), 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/QZS8H2117349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2916e2a78927244538bc4638890f98e347e8fd369f368743e0bdb709aed39c7. 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/DGA092492349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f6421b23b2d9728de8396b58b640628a37c5333744bab0576205961388b53f. 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/FR2X42549222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a78118ab64bb8fccee805c2a8f6def5c32c5dd6297d26fe5c9a7e54f63d308a. 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/FRX202532974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18863a84e5edc1f78fbd343c838b23443916dc5d332c97f9a6809fd4f918efa5. 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/FRX452545932.