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 0xd4b3ed8fbfca795abbaf17eb0b94bb8e96115b4047f89868f317424348b06692. 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/9c5dff10-a5ea-4086-8b2d-ef8e79085527.json and https://artists.proofprofile.net/proofs/artist/9c5dff10-a5ea-4086-8b2d-ef8e79085527.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
nostalgia (from Young Pop Renegades, Vol. 2)
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 0x5180a85715617a79c616e541bdb37cc71f686b8aa3752fc65b86fed83a952f71. 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/GX8LD2308597.
thanks (from Young Pop Renegades Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba01aefdf4e6df7b5b3a0bc76da8d2eda9ea152678eb22f9322f04efe1cff18b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX8LD2356715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b422cd6d859b78db52ea10d1e609538f7a56e577814fdfeac8fc68c26f8932. 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/QZK6M2219787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d3574a10ab51a0893b512fd82e5e30fb747db32da18f51fcfd421aedef5da6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWW2152622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b10240781658dc56809f939c488d7ec882d2bb6c80cbba2aa9dd45d3c74e88a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMEN2365875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6e72e7878d7705b464ba230a76b56bc51b1991b2b7dddcda7ee65dba884542. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGXC2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6e72e7878d7705b464ba230a76b56bc51b1991b2b7dddcda7ee65dba884542. 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/QZGXC2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fcf2592d63d124e05675e6f9071b0fb7d1975b66870ac49dda0e29189fad81. 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/QZTB22300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f94fc18647910057a51fd615d559ff6130866268611352b3d168bbc0264b9b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYX2419994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fcf2592d63d124e05675e6f9071b0fb7d1975b66870ac49dda0e29189fad81. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTB22300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092a5719eff0d088c76574b1a1376504fdd380205bda237f4770323b3eb79b5e. 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/QZRP42265178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63852c5e41fdfc3debe9beb4d1dc767309c20b5ec18d4772cc484b2e997a11bf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWR2371244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092a5719eff0d088c76574b1a1376504fdd380205bda237f4770323b3eb79b5e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZRP42265178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb876b5addd480fc20b9701a869ddcc0139516298b6f1e3c9e9aaca5d58435e9f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZK6J2255658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bafdb9208dcbdb73df0aac762e169004b0be5ad77c73d7ac48e23db62508ee9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GX8LD2317382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e5c294ebedc5476f385d1be8aeab584bee02c7d2b70de43f55e065b98eeb2c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GX8LD2361490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1cd80eddf0c07d685cb5fe34710b87780fb0db9903520935db98f31fae6b3e. 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/GX8LD2331410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3a42485564d211ee62a42069e9bb328a530f6578698b63599be7dc3870d32c. 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/QZFYZ2380457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6e72e7878d7705b464ba230a76b56bc51b1991b2b7dddcda7ee65dba884542. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGXC2400105.