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 0x182097c7692980d2611b4104695d8b6eaa745dcadca833a6b72a0b041f738498. 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/9ee407e5-41ef-43f5-b05d-ce38eda42fe1.json and https://artists.proofprofile.net/proofs/artist/9ee407e5-41ef-43f5-b05d-ce38eda42fe1.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 0x2c3cfa43cddd29070dfd5da59544a1ac3ac7b71e66f285b66ed1cfb78072969d. 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/QZMER2178647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce818da320a834c532346a93bcfededb3a4bf267f3ec869f45ffb0c6b5ffedc. 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/QZMER2178648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9993ad4ca09b6740d4513307e14938aa669e2a475adf441b7671bfa92580c992. 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/QZMER2178649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e83161c6fcc08c530519f64eca09b267a06ca1693b8e43adf6de368e5249e. 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/QZMER2178650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88f435fc6bc5d2d6a2feea60c4ef8d122d6b7bc095a8aeb8034db2662bd5c36. 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/QZMER2178651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d2f4623afc5dcc3338b7f9aeb46c29bc57e0e22048acef6ec94f6e06c4f696. 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/QZMER2178652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc78424d4df5ae5d268dc2ca9b4acc526967bdeced65f06ed1a3916d74a2cb4a. 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/QZMER2178653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58289a49c3bf8e2ed204782aeefd4505c63718a25ada2c22dccb19200d27c19. 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/QZMER2178654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6668bceebf5fdf7716d93af9c1e18767d7e38b95f1c59a1cda0897d49582d1f0. 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/QZMER2178655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87fb6930c9f19b9d93b32ed1887e82f9feeb18b24c3bbe67b81c336b45f855e. 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/QZMER2178656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0139da93f92afa8e1b89ebc32efd18ef7d03f75547ba80f1348cb71fd0c8a0a0. 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/QZMER2178657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1875f7e17a40a285c0a2e5275f06ebb10eeb8e561b3c6e821207561a39dd818. 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/QZMER2178658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca6b3e8e6690dde9716909fe9412be4f3dadc7b8d58183c753f8f43d67270a6. 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/QMBZ92420895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb150c61c48cd553b57578af28e3dc400c6989b28a4e0272f9066081f2af8696. 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/QZK6Q2391740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634bb726b23bd37098c75075946a5d154dbb551b1efca09189b5b0ac20d435f4. 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/QZMEN2333008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe407c561eabbc0023f41b625d30e9b8063ae5c4345db9024960eb1e0931de6. 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/QZNWX2101624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16662e4c7ef75dbf8d8b7e312cbdb7a0c0389d67ef15bdbf823382fbaf0157d0. 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/QZHNB2300651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ea6e3d7e264a73d8bcec0a8f86c949cdcd348df5f84ca5f8bfd59d1a788ede. 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/QZTB22309906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c46c80cdee23c6a031e9f4aff615273f7dec768a6a32b08e6b881ad40777b9d. 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/QZTB22309907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2ea764f44f37ab8f9c330d359375bcada98fcd37906c77d400558c3eac01ed. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTB22309908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbe481c3287bb8c157686f0625b29ab5ff7c2dfb9cbf93e796461f8b1dd2741. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTB22309909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04732e5eaf3290e7acc235c69a3a353fed7d9559791ccd47af80cd484665e2ca. 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/QZES62481947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b6b4ac29597bf94294dd6c0cacb60ff954e7d6768d72f54a687533332a957a. 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/QZK6M2355750.