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 0x5f3b8b17b3d21c59b7192190f4948b009628db12c5124567891aca37d7e54c61. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b2e6432-c40f-414d-b316-3f7d43222785.json and https://artists.proofprofile.net/proofs/artist/5b2e6432-c40f-414d-b316-3f7d43222785.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 0x8d260dcce3f64ded65946f92353773bafccde39512c8c5630e1821dc3a624699. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/CABHM1800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76f62fe9f2107db0308f403eff61a7f64feed25708fd632b675ae256f00c7e1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:14Z), 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/CALWX2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca5dd4fd99f623f0d8caa99523e7bf2ca3eb4c6606d3ce03e7241ba410032c8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:19Z), 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/CALWX2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5172e85504e9e271af5be6a835938af04a91b03144e797c946f1193a9b8a298. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CAUH72303101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdba43e31de1ab3c637f546dd14024715b121b5620c843eb6931443a520bbe0. 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/CANWG2301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdb574eac68a595e166876408b84b21823d29db1ba075e6fed221da491055d9. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/CANWG2301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5842c28f0d2f69b20c647e685ec2721d666bddd1e81bdccdd949df9529a9871c. 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/CANWG2301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10b639692a7bc5c5c5883b146caa0af51c2cb8eaf5491f71e4e554d4302d74b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CANWG2301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdb574eac68a595e166876408b84b21823d29db1ba075e6fed221da491055d9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CANWG2301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10b639692a7bc5c5c5883b146caa0af51c2cb8eaf5491f71e4e554d4302d74b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CANWG2301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee446a726be15fa551cd9a3dfe218f14692177bfd81800849696e624d50fe10d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CANWG2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4402039820d4a1d9c6b86f3334d4262e58fe3ed0dc54f25d523e643021eed67. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CANWG2301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223437d3421885256b76c9bee3ed1528caa680d863e2f9b1b14820b4b8259ad1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:46Z), 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/CAF662500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5684651ce48c50492394842118859f2e12cda15a4738ce97bc710c9c7badb2. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:03:10Z), 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/CAF662500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad477e9082f700cd3bfb33220b127c8dd99eb2ca7d1cbf3e5cd6a4bc738690da. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM24S2203614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad477e9082f700cd3bfb33220b127c8dd99eb2ca7d1cbf3e5cd6a4bc738690da. 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/QM24S2203614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f3779e7f1262ebff88b4c1f07d76a2aa4853f5cb1df31bc69a75150a3c113a. 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/CAH682200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f3779e7f1262ebff88b4c1f07d76a2aa4853f5cb1df31bc69a75150a3c113a. 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/CAH682200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe510137ca43626faeeea31b049835cc70f5725b6c48e9d785aefa54bab63228c. 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/CAC0C2200757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe510137ca43626faeeea31b049835cc70f5725b6c48e9d785aefa54bab63228c. 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/CAC0C2200757.
Find Your Harmony Radioshow #288 (Top 50 of 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f6ecfccbc5c10e4327202b88fbd678690e485b8ac59b9cb155880edb7bf139. 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/NLF712112295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890f55ab64cc307472cc181932fdba949b2074032656e6de952756b3f8cfb031. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:59:17Z), 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/QM24S2300749.