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 0x079963126c805ccededbb786dc1dd509e7b92e1c122357310943fc37940c44ef. 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/7e9e1413-5c1d-4931-bc3f-6f68949aa1a0.json and https://artists.proofprofile.net/proofs/artist/7e9e1413-5c1d-4931-bc3f-6f68949aa1a0.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 0xe2db3beb49720ec9951edddebcc309f8aa97e39f1c8dd78c2868bf8cda436af0. 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/NO6QK2107031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1080cae2c989eb8af5d968e27cc2ce112b5359b6b3e002e156fdf7f7c74367ac. 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/NOL3T2101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac14ee969b35c93af00e04358e32802b6e4535a1c0128e54e2d62bafd54a9f5. 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/NOL3T2101020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcce8e08750b9dc41a65bd5a001af6db4ac57ef492cd033c09101cb4fba82016. 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/NO6QK2007011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a46115e701b5a3d5db5c440a7ef0342596da54473c8cd9f8b470edd1d20d20. 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/NOL3T2101040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f9409d634295f0b753c6c0b36e7c23b0f10313492da858ea6849c9c80fabcd. 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/NOL3T2101050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7df35fa9621371cd9b7ee9354238a0a287ed85199dd830211031262478065ab. 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/NOL3T2101070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3afb32fb698a5a249c2667f383b9528c50d2d395cda45dab8a20cb09ab2457. 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/NOL3T2101080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432784a5567b6ff7701ba3573a79f5ef1f915c925ab6d27c3db2433b95ebebf1. 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/NOL3T2101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7395a2fa7d1358f66cc751a7b12203ebba1c9c91261e41132cdbf8cb0d97535. 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/NO6QK2007021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e7328da5bcf2d4b74fa1c11b3b06b19855f5d5da1ab462a9aebeef8214ae83. 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/NO6QK2107021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c1967a11241bb9dcd6acf45c79313635b79380883d35680878875e048b9d3b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOJ2R2001020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c3f2fcb53c2a04b215a95616771a50a6dabbba2e60f9b181a3002edade65aa. 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/NOJ2R1901030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7203ea12594c7240554af4f341f3708cb5e22ff770c045f0092b8acee34a6393. 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/NOJ2R1901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168f89e4e032d8df2744180af6ddd558d783b87b555e9edbcd19e66e99fbc257. 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/NOJ2R1901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835e321c0c2f5adc08cd04d515638c8c7b95d7015accbae6970c57c600b3b798. 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/NOJ2R1901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062569c95a3aaed132d461afaa2b7803842781edab95d5810c4c971e6c208cae. 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/NOJ2R1901060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c52b2b1854f0bf1da0cc54732710e34e91afc8987ea4d0827a57154dec1d424. 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/NOJ2R1901070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da5f65f6854b88bc2e99aedd26dd66019dbc30ec8f187d8e479b6f895ec489. 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/NOJ2R1901080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5262fddcab961752df10b55ff95aa2f150bd37b14f7b5ef953453e84b7e09e6. 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/NOJ2R1901100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a997e042944419955ff7c0b0959dd1095935cffa7f21f40506f9db043af234. 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/NOL3T2401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd683769e44c9414574479a35a3f52af5770123d348925eff1614e774be517d20. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOL3T2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd683769e44c9414574479a35a3f52af5770123d348925eff1614e774be517d20. 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/NOL3T2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2db3beb49720ec9951edddebcc309f8aa97e39f1c8dd78c2868bf8cda436af0. 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/NO6QK2107031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7395a2fa7d1358f66cc751a7b12203ebba1c9c91261e41132cdbf8cb0d97535. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO6QK2007021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcce8e08750b9dc41a65bd5a001af6db4ac57ef492cd033c09101cb4fba82016. 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/NO6QK2007011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835e321c0c2f5adc08cd04d515638c8c7b95d7015accbae6970c57c600b3b798. 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/NOJ2R1901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d6d2ecd94014fe087e1c8d345f57b820c0b2e11c2c5ef44f764c09f5a4981e. 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/NOUQO1813020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71f2da9d38002e9cbdd6c7c585ecb2ed57cb4b18063166b221e1c68891ef472. 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/NOUQO1813010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b07f6eedd9963d755e38c62ddbb23902efa482def55b50cd0295d43fd329045. 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/NOHTR1804010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1783fa1b2fc4df701b558f469c9db1afb636b6e04b9d276acb5e4525286775. 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/NOHTR1801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f80a67d53ab3a9e0d270d3b677f714c7faa543d621589bf8b19ecbe4386ac8b. 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/NOHTR1711010.