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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbef1ade0679d6695ea63dea7e9ff6b94569e46255137fc65463a458e9fadda4. 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/73a65d37-2074-47a7-a612-dde5f7f9078b.json and https://artists.proofprofile.net/proofs/artist/73a65d37-2074-47a7-a612-dde5f7f9078b.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba52fb5b3eb6351c8f944cdb948a8e42838721028204f21ff5943ef43eb8d33. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBJGV1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73ea04f6faaa00acfd7167b06f364d690ab2596d89e550584d70e033c68d6b9. 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/GBJGV1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fbfcd4784a3cd833c771e11325452bd696196f8ea30fadd1a3aeff82d4fbf3. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBJGV1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c683ce31f95eace9994e37d0dead40ebf08d980724eb805e3c658059983491c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBJGV1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc20eabd6c27ac17440f14b330eac6a0e3087cdad2aaac1712fd7d48cfcbb15b. 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/GBJGV1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf452f93f3156df33d1c70e900c0a661a8488e0d80ee7c5d06378dfadef03ce. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBJGV1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11ef1af46927e0e287f74d3c7957ade888063f1d9ff596b27930005e64a5da5. 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/GBJGV1900008.
Inspiration! (Kid Machine Manctalo Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5b7e94b4c4199e76309d1189227e871fc9703442e368f02a6a94f4c6b2e37e. 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/GBJGV2000313.
Second Death of My Face - Fujiya & Miyagi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae30d5c3c31de89628e3c8e565b3a01941e276a042eef0ecf40e4c49825bf48. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBJGV2000316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff3c94627301edbab6d9fe978c5f91945f9590ba66c611e0ac961e3d78ebede. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBJGV2100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c1a9e829be7ddcddcc71c4d040ba533d6b0f3e88cfaebfa32e5ac364026c33. 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/GBJGV2100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35530e0c1bb3a3ad3e86fbcba2a3850584543ac6273a8efff8c79bbcc2e9363. 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/GBJGV2100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6478be8236507833f895fc851cd0b3c9eeb3bc07aa82906cd8ac0841a40dcc84. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GBJGV2100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa580a9d66b6ca58146871b8d980b7fc7194b02bddd7298e6e57b8a83717f69a6. 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/GBJGV2100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e68135ac0d41510508aca57fbe01f9786822d8d351e084cea6c5511e732fa6. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBJGV2100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f7ba83233b8a296012d2ef2e27cc0e09d01834a5941bfe8e30267bb01d45e4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GBJGV2100306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0c66c7472ab37b317babbc169d88da0b4e3d136c223796e55361d41385e3d4. 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/GBJGV2100308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a8996e70e4c41958f6d032cfbefdb600a9d7de3d366c816bab371ec3732aa5. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBJGV2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a51cd5c87ec9c098949eb61488a0bdf376f48dfefa913a2c68247231aa05d0. 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/GBJGV2400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46deeec3c92d849c64cb9c9af578ccae8311f5f41307c38ada3c971fd825543d. 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/GBJGV2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227bfd6e5db32611ca1413c9a080777d39d7fbc7378737455f2a42e9a1bae76b. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/GBJGV2400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229fe30e4efc82518e5c5487b160bc0086cf249b51612d1993dc6cc44c69df2b. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/GBJGV2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa014844d5f9a4dcc880b2fb6b888a5d2281ff01e4a15919fa430984703d3c025. 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/GBJGV2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a8996e70e4c41958f6d032cfbefdb600a9d7de3d366c816bab371ec3732aa5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBJGV2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388b5b80d68dd8f807985ff7090c34aed18da69945907351b860bc783fead508. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GBJGV2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d0b4c8af08930a4403805e612fd1440b80435b226609f18f85ae1baad01bf7. 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/GBJGV2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a51cd5c87ec9c098949eb61488a0bdf376f48dfefa913a2c68247231aa05d0. 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/GBJGV2400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37741649cd57a297753393951e7b1c67fb7245bb17ac4cc1080c8befb9f04e8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GBJGV2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878cb3049ff9a2142812ee6966dc7ec7cf3777ba69298c82a6590ef591498f09. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USA2B1902196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9540d621be7294ae7785de21167f0cefff9f22737baa13d3847a69dc3314129d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GB8FC2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d44917c5c9d0a7a6223430fb194cbc565eddf61f5448f46ed3cd0fcae19479. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBPVV2300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d44917c5c9d0a7a6223430fb194cbc565eddf61f5448f46ed3cd0fcae19479. 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/GBPVV2300658.