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 0x22a2f3b82ffc2d5523eaa124ca6c96a7e4b3175db8abcda92615bc90e54cce56. 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/f806be16-9328-489d-9c60-7d04f3d81ad2.json and https://artists.proofprofile.net/proofs/artist/f806be16-9328-489d-9c60-7d04f3d81ad2.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 0xa3c61fa67e988b81f9b6a7f948566df08608de8fb97e17fc7fc4a62d2dc21a54. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZGLM1986663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b164f3149791085a4fb680f00065459a9100f666dac59f6b92765a3e1a7141. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZGLM1986664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd33abe1d51a21c0603b5936a7e91e9a425dd85864c064f046b8ea7f7ffa3d85. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QZGLM1986580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412b1bc2df4aeb4668c60dc924925edcaf15be66f6a230762182320f7737cd5a. 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/QZGLM1986582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e59801758f9ce975e6bffb00c7fc98375483769c8c5414d766542d32c23d6b2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZGLM1986782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a024157e0b63620f605d5e44574f949c18a92fd15ebb6b46e08c1fddf9dbf5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:49Z), 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/QZGLM1986783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c6639f56eea2822bb786317e300c1bee9def47bc42e93d767761cd56f05b10. 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/QZGLM1986784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fef3d15f4bc087ebda131e71607378d00bf0bb1bfa804843c9a7394e15e8ec. 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/QZGLM1986785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce165734c923b37ed0c6e117cadfeb020d3bd36a60c9e38dec1702e8eb95d62. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZGLM1986786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42be50da879cfbd3c2a46a5814d7b50536c73d357f6f4c666d97f36051f9baa. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:56:01Z), 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/QZGLM1986787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17d4977decbd350b8d96b8a4c85800259661498e141527784c49eaa8de2a27d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZGLM1986788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b0788ffb75a420127a79c0914cb29204791bb9043c8a8a9dc0fb17ecd8ce89. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZGLM1986790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e97871520dfaf1e74a441933872475a6ccc65c5757cf1c4903391923cb1ad5f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZGLM1986791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2001f867604324a40627d8dce35e862d1c6ea728424c401262b6bdb50845625. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZGLM1986792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080c724f42ec7013ce64e280eda8a59457b317b3c6742b4929bdab7ffaac741d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZGLM1986938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7908cb7e9e8861c59a5535a519b580a8b8663ea7bb0e10fc62ae93b0214c169e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZGLM1986940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006bb93994debead3b763beee4518a9d4996ee80c0858d8bd883fd106db13592. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZGLM1986942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cae9bb233a02b5d84d1b34d4cd7797aecabfb5ef91e08c0847f730cc520fa8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZGLM1986944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e8cb221c14f2fea3b71a9ea10b018995f2a57c38f4fc9de0773ced60d7a0e. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZGLM1986945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929f61b935d2c3d317a9d4cbe7d483fc4372c569411bca2ded6594001b7b6231. 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/QZHZ62018826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d724bb1a07e79860bf9ec999162bc9dc11ec8f7f46fe2d6aff198b09a03276. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2306924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e49b368ac2048e91f929016a53e3c2b5915dea759caaf6cfc84fe06e0f33f2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BXN2C2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0acf2568c3c54628df770386371604df6a30810742a3adc745c4c005a84da1. 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/BXN2C2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd207ad566678c5153243e5dddafe36f2ed963a6f662fd7c9035b2a642dcd7d9. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BXN2C2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727e894693f487bc29478e4215cf2ea103d86b8543e1060dd5428ad1ac4405fc. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/BXN2C2300023.