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 0xabef7d4efc26dd5b474d33f7dbcfb902727b9c3b8e6a1ba39f52124b98789629. 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/b6e88f19-c2ad-49e6-898e-97bbe28c462c.json and https://artists.proofprofile.net/proofs/artist/b6e88f19-c2ad-49e6-898e-97bbe28c462c.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 0xcfd415b1c38fe6553cb537690563b03b7f8c5fb8c9e731fea93288821b515e2f. 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/ZA89J2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451189007587b5541b43c5dfc2bddb76a74acc9a7e0a85eff82ce11f8e9100cc. 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/ZA89J2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd415b1c38fe6553cb537690563b03b7f8c5fb8c9e731fea93288821b515e2f. 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/ZA89J2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378c8c117446bb939b6831f9f3fbe4b8f4d83ede45737457d9fdd60e62222056. 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/ZA89J2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a744c9b4d22cdc410d7dea1a6fc17503e874bbed8d63a7b54647bbb2de17625. 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/ZA89J2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33b9c1a03d65a38120a1bbdc582e67557b01b81eb863313654e211b725e8727. 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/ZA89J2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e098bb93438a1d674206a9cdd130e64e44a76b9dcfd7cc7f1cf097d5175e03. 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/ZA89J2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67da986ba00bd7e3882da2e74443b7bb2d5556b6a0962ce7bb9a76b8f954a6fd. 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/ZBGOZ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1003eaa1272dd93adf6ffa03c18a61b31ff6f4db0c00c8a655191c28bb306ba. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:29:00Z), 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/ZBGOZ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4738e46401ce4187fd5f034289591e1aa7f323f246e2512c9621e6512b4d09d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/ZBGOZ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676b9c64375313508785da1058bb2c3987fac4368391492fec02338f245f8a97. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ZBGOZ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d36481a0870cc82a459b63876becce28374fc99966c97c4423ed45ff64a9a0. 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/ZBGOZ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5494dca8c35b5bf4445de2fe6863d0b02a1da56b81bcaf4bc13b0cdebb1f44c. 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/ZBGOZ2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb04f7b3017435b8b5edd222070e324e4b806b012c7ef17b8eb6ee6e2b162250. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ZBGOZ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0646da229bf6e4c4cd5eb12c393f80d9e65b4894948ed446ffe2bdb772eded2c. 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/ZBGOZ2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3561b14398152eb132d41f53ea70ecbb15469ab4986ee352727a45d5b5c7af6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ZBGOZ2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1288c4863df7d9edeaf1fa3320ddca9861c12a3c42bac19479888835d1431c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ZBGOZ2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fdfcec6d6e2894e1e934b770b97e013e44cce5d11b829d7ae3701d4fdbde60. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ZBGOZ2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e0c5fca10392abed9e5f1f6dd38529e010208c8a7995954cd8b802330bfa8b. 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/DEY472377923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6962f838ae7fae31dcef57db60c8119b70e8e9a5f7d7860ab58c88b433d7b577. 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/US23A1583336.
Never Ride (feat. Sjava, 25K, LucasRaps, Wordz, Thato Saul, Saudi, Maglera Doe Boy, Buzzi Lee, Roii, YoungstaCPT, Anzo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f22e4123088daf684528641338720a9de5e786db61f4e7e8e3e5f3a18be36c. 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/ZA56E2201078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f22e4123088daf684528641338720a9de5e786db61f4e7e8e3e5f3a18be36c. 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/ZA56E2201078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28373c98a334e8c2283e90871815f06a84370650ed93fb171cb1ac8f9d48366b. 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/ZA56E2201873.