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 0x0cbea5079279f3de9b4116d353db5012e8d543112a8791d4c2a8d2842cc3eeba. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c01fd9a-b4fd-470a-a3ec-4ee13f46e441.json and https://artists.proofprofile.net/proofs/artist/9c01fd9a-b4fd-470a-a3ec-4ee13f46e441.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 0x3a697b1433c74b592aa9b8a4d5da1a9763e1d1114068575a6a9a5564d57aaf43. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X2430015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f395b000710ba5476645fe953e60c0896ff28824c176f7954548b0479766a3. 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/FR10S2438230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50ea9abd82a8769c7e44f4e7984c9feb37d495087574aee833cdc0ef77562df. 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/FR10S2481828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8376918c8ecc6863c96213b9b7a5779e95f6eef628921016dee96bf50a1422. 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/FR2X42423687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03dc3295c26d51ad868c1dc891d30ca5629dcfee54aec7de528aa28a4731a17. 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/FR2X42476067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c86f7da194a06efb1f9edc53d7f41d968f9e919c61a12c82c1dc7f62d3375eb. 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/FR59R2414299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b01c3c7c2bd4e4123565c70e7e8e2d05448cdc4b340651ec453a7b4816fd929. 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/FR59R2449899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a47715164f896b1e5f23936961842d441bada6da6ae1b261ed384fe30dc1403. 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/FR59R2492095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a65fbb3a4461284b304a5c95d8c82866bb198ebe4cb95871e75d823021e5f0f. 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/FR96X2430016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5468744d6ddbc6821111083820f0f3931ebc6e6f5e4a81e7ea1239552ac21b9. 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/QZRP52171650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d11efda3a8ae82a6fffea6f06471b86bf70e3df12628f36e3f232e641ce08ef. 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/QZRP52171651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8f23b0bc3a52ce3503712a66fe8c847c30abc658bb8d083eed7e96972d4bc7. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:13:37Z), 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/QZK6G2248920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c266d15ea5bd66ed8e7ca32a2085c7c0174aa45a0f61e3b4b08f8ac4127c17. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZES72252887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284bb9b16aafbdb8028497ee7f7ef659170d4602139390eb5611304ca47f6b91. 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/QZHN32178687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788f4c016e926090092a912a0c78907066dfbc0177f986e84593355a55782b15. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMEQ2164256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b01c3c7c2bd4e4123565c70e7e8e2d05448cdc4b340651ec453a7b4816fd929. 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/FR59R2449899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03dc3295c26d51ad868c1dc891d30ca5629dcfee54aec7de528aa28a4731a17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X42476067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b07e7b18d9169776c48543ddb0de86d412f028f3fd1171ad45bffaa92620d4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR10S2479637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4fd86054db6daa01f30dfd2cab00ecb9eeb5efa280e69100e0dfccf1b4c339. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA0Q2364527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1aecaca763129a9859adc3046b5001ec5a842aaacd242dd2e8f16a3252ae10b. 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/DGA0H2360139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8f0607d6e1bdf75a4aa591fa298f7958ba3cac3111981ba240b34830a0989d. 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/DGA082333468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bcfece22ea1532b2a9bd845493eae00af3546577f01ab5ff0a66b64671e4a7. 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/FRX452355683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea44697bfd0df2fc15937095272066db136df72920ec96a4db1e984bf94e41ec. 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/FR2X42390575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e544e4365800cb1d19b82731496a33db1cfd37e40a5043cec68122b237380e0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA052214877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1adf7db354d023c366ae069fe911bcab9c2b7f65a4288e58a453f1a8c2e25b. 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/FRX452282807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9851572a708cde857f446a80b9ceea97a1787fd34de5dd27144f362d16934dc. 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/FRX282277145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819da5ebd16b0fd5bdde3633067d99a4ec1acbaaf93e158226fa46d1f9a8e216. 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/FRX202204864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f22158608269f076b266c030180b00b3c28ab9198d12cdc319022d0311b5d. 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/FR59R2297286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a2d562e7a4cdea77eead624b91f9f5dd2b2848fd87debd7699066301b71d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2270177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a08571f3eb5a977a3ee05c32d65b87cf02ce9d92b0140407270fcf168aade5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2223897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf43450f2e1d9f59cafe7b4ee9f98f80ea0ea642ac7c88923df78c47b9f134b7. 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/FRS182168185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5ed21da2d5e455f20d8f9236b32f07ee591034d36f6be7b2ad291cb2cfdd06. 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/FRX872189545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917e48d6fbf47544feab7f61b95c999fc592eab88618d7378dd9dc00bab3379c. 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/FRX452513599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fb32ec5cc6ce7ae030208e7c227330d83621f8f717a992f5f430fa35d8ac6e. 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/FR2X42598805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb283d67532dace75a2fd22385b884ea5fea440c1d0de232344ee25466fb8d953. 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/FR10S2529004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb78f16ad5f6cabc7a74ee3ca5914418ccc4fdc6f29d3e5daa0d4bb393a0cab4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR10S2529005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b574e5e6b7cbb2547793788111a290d0c0ca25cf1b30fc7f36088cf7262c5c8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S2529006.