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 0xa7535803222808a9013b5d154079864eb6169f0f9523868c08c551840edf1e9f. 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/2c54aa91-4e71-4d3b-ab53-95690186ecb6.json and https://artists.proofprofile.net/proofs/artist/2c54aa91-4e71-4d3b-ab53-95690186ecb6.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 0xd8a199678355866e88d2009c06c39c9111d2b951889cd1981814024681ee89f0. 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/QZTBE2303596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3043fca9fe9c65a0c95fd8b8cf9cf3fc56cb955d90e8d58abd3f49c0d73cb298. 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/QZTBE2303597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9432f77552468cb5a86d7cff58c2be4692c5f99c618a0ade49bd7e87e94677d3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:41:05Z), 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/QZTBE2303598.
Explosion Day at the Tinkerer's Workshop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f02968447254f7af7abb437cf7f831691c87734101a16d268ca44351d5fc7. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZTBE2303600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae340f02fd85ee14dd52fdb4a1dd591797763b3a4a08d6adc38816bf752128d6. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZTBE2303602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348df47bbde3725d1e9e8a6e25040d932af88cc97b7867e6c4baaf8eaea9201a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTBE2303603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094e757da0769acec11243f930e8fc12a56123d13cd71755687b71a0a76e353a. 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/QZTBE2303604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba7a15c26810e4c3f1b4d0beca68cc6b7c874f7227eebba68ee365807931790. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZTBE2303605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd40a27d775886d80d7260bc2e9d7ca1c2bc9d646e6e0ab35b0af110c67078d. 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/QZTBE2303606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5bf46177307a12d217c8524c0239c5bcbceca4cfaaa0af81faf0b74d0ac4d4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:16:21Z), 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/QZTBE2303607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff78f2f996d779477a2f6b0cba08c458abe3c54f8efb6c66bb14418083946fc8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTBE2303608.
3 Raccoons in a Trench Coat (Who Gets to Be the Hands?)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac93f4b523838e0df819d85b0d5ca10531e065bca4fd7f81e676c41aa0c4bf1c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTBE2303609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02082b1786f9551da1454f33b7721367cbdccc9f1cc7fd0978ddb56f4d596100. 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/QZTBE2303610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4d52b94d2cf055ed34f18f776cc4d81fbcdeb573994b7c6ec5384aecbc132f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFJ2462343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ace3d720b738a1258609c915819c309e86d8e826f3cdd417c4a38d3b00aa7f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZWFJ2462344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45670e10d1895200a5f0399fb7bac542b1ef61a65337e2dfe64621040482c65f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFJ2462345.
Angel in the Glitterwillow (rat meets bat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cbe16e53fc6838a4161a81eb25855279908f972990427d4c509b598aa6303b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:57Z), 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/QZWFJ2462347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47348888ca084eeb752bc72684ab5039dadb694341884561fa874e47252f4c88. 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/QZWFJ2462348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88162b9fe9cdc9919013ed3c425d305389bd6dbcfd9601735c4a1c3d57e71d2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFJ2462349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61707d815748775083e94f2376d9297f5326df6c6706a24039b5b52359105282. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZWFJ2462350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c9a1fc3221fb14d74b721fa9da68ba9c1729b7158cb36cc2995c4018501ce5. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZWFJ2462351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2215d5ea58c974cd6ad95a52798271f3649f466f526dea0d8ba6296cb83e9ee. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWFJ2462352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d76604f772b85942bd501b1c0914f51f9884f0534ee8c4cbefb59a6fd79806. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:22Z), 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/QZWFJ2462353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d9788c97546992092640ee5330ff36839e725862bfb61f9721acc64c6a975c. 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/QZWFJ2462354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6788b425ccf2beb922e3b99f82f95a0bce2e66d9507b7e06c45c56a8004b329e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFJ2462355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b96af2900956aba2597e451919e6f96b94661184d2d4c4a8e2e489e9b8e32aa. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZWFJ2462356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863b779679516ac9e86ab6c706be3cfe6574c14d1b8c3f41dd94295a70950f55. 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/QZWFJ2462357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1590a86bbd224f597e4335764696f3cd703619fc15ff0c4744dc3485240fcc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFJ2462360.