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 0xc3880ea39e1b5909492ed93ef76674595225f8d3e1c6dad61c2ee29272ea0018. 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/68142775-faa6-429f-844b-53b4123fb7d0.json and https://artists.proofprofile.net/proofs/artist/68142775-faa6-429f-844b-53b4123fb7d0.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 0x1699b6ef2eab9841df67f321d34ad76d2996d4b8c477d50f84595678fb1d9780. 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/FRX452132959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5eab708aa730e5a2989f65838b83918069c392f71891ea33dd0f52b3bdb000. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX282114985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d78ef1ad76ddc8106f6d44ec1b9154dc98550fda3ce9ad1236df10fe473aa2. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/FRX282114989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cdc52ab104ff58d9386b837cf0ebb0ef640cfd165d152bc6210e06657957fa. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TR0390901300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc055b3d706bea5f1278de315bb7349b560d74a621a02d994af82ae1eb57caf54. 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/TR0390901302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ab8e9a3ccc464db1560a6c1c6508dd0f247afa35326c6829f8ea0586eaeb6b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TRTR03901304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea73c2211e83180916f500423d38150e4ea7af1fd6c4652d54fe9fdd6fc6bbc6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TRTR03901305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd727d2c51788fcb6d4bf5edfa7361447a57087f42595557fba586a081e94033. 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/FRX282147183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5816ac42c7a6ee848428a5030c24cf344f026b05d17eb389dd7ac77c0485e9. 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/FRX282147167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8695f335a96abb7e27e353889bbc3a56e2878bfc109ceff24033e27fa16bf0b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:28Z), 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/FRX282115013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5798a574d7ed151f9ce1f0cfb69bdf5d42512a5ae378aa5d64bc553dd3281bb7. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:04:17Z), 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/FRX282115018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4460b3c40c1a7c3d6a2d578395526f59f1b4ab12d43d0ab37387a2e8c609b8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX282115021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c1b22a04a8534f8553e4acb963bde7f9e1009067178c0fadc698958b875628. 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/QM7282390135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d30dcaf171f43a4478e3dffc8639ae66936d4303d2244d9b1c41ef846b880d3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:47:05Z), 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/QM7282390136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce46ce1d90cac814cb05b9c9878dcb375fb07885c8eb2cc00672c8d8b185c29. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR59R2103556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9350587b20ffcd4511de8f0a06ab4f1700060f2d010a3239d7f9d0f0171fe645. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX282181251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dcd673cd0fee51c274f7585993cc04e32ee702413f3405990cbd72de5da3c7. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR59R2200776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fa67f16f5a075096149cc83f54336a478b867b03bffaad6aad26061ca1c6e0. 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/DGA052366956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf6ca319aea08cf1ea9c88ff7053ec9889904e4cc1cfd6cfd89dd3c858ecd4f. 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/FRX282445717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e4bfb519dee4bc653ca15165ccebad782d93cb29cd602c38f3d394321c9db3. 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/DGA0R2443381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfa417733cc9b5a55aa3595ec72859f7d84f30773abb1108e7b2b2b33f9100d. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/DGA0S2498819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6f72ea1e63d6626b4e9cdc6c9f828d9c85eff404531263b6af1075b496e38f. 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/FR10S2516300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeac72e72acd8293dea75b9378de8598944af93c954033fa11a529e72f05711. 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/FRX452513234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d32e5782ba35b8ca950f661a0ad6aba16a9db803d5c6d5e33c75e5d147e32c3. 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/QMFME2521508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c43770125bc1e68183d52918f836d2882cc8e5f4ec6e06a6c58e2b349c02977. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMFME2535177.