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 0x7ab6a5e3f389e4eac7c9f65f10917080c7ef3e5bae1a611955e226f82c4a3851. 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/3799054e-9b7e-4d87-bc09-8675f592c684.json and https://artists.proofprofile.net/proofs/artist/3799054e-9b7e-4d87-bc09-8675f592c684.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 0x066e31a1760ad756112586d961dd481c2b53911e1ce67e904f8b394d51475d3f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX282001697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7309bc4a2fb8d86356062e80f27c36b04e532c446f56ea1b654679d6918ee4c. 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/FRX282001702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd51627add802a1f4cd04a05593f18753d4e8531f22150148ad82d1359bd6509. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:15Z), 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/FRX282001703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e557938c28da77768cda386964b1dcfb904e0af6a694ee4d52863bb593f0615. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FRX762059604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aa6e721516b8398f24ea2acaa53eee1f0ac9dff9bc726261dc03a6d5e81a96. 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/FRX202073973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64208430acd34db559502d2eda3cfd5252b609346c2a6ec7339a32617c36b0b. 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/FRX202073974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab473c1efa44d2f726e728c5bd8e5cfb0a8eca1a43e17c8f55d29e31bdc4031e. 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/FRX202073978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb7aba011a685092c47cfcf81e2c6fc705df0392183d88d4fcb99c691761fc3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM91867281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce356e3d79bd94b047d152bc87857e9b086444ef020caf7d381dbacc881dd3d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRX202073979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0de7a6843cece3eef33a44a084888d34bd797cadd62ff159f93c4b801fbc4f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:06Z), 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/FRX762064736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e0d9513d3da95c41adf93e6d1f0e3a15c38bedbfd47fd7830ad8a8a936debf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:11:31Z), 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/FRX762064966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e0d9513d3da95c41adf93e6d1f0e3a15c38bedbfd47fd7830ad8a8a936debf. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FRX762064966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0ce484487db08cb163ac0b90775a7e5aacf7770e224452e85358b917a1e1c6. 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/FRX762060130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0ce484487db08cb163ac0b90775a7e5aacf7770e224452e85358b917a1e1c6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX762060130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa98f68b6305a24f5d06c471cda4fdee31c4eccfef71c9b5ed9faadb01bd4b1d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:46Z), 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/FRX762058815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ea43fde61acdb9461f1215c088f189504a28d056fe6df596b78bc66147baa6. 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/FRX762058864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38771e60460e512fd079e469c3224a1becad91034694c3ca68527d4dba035981. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX762059381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e557938c28da77768cda386964b1dcfb904e0af6a694ee4d52863bb593f0615. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX762059604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6d645a230cf66fa51bfe41536edef2a6fc99d0c146c8f1061a911ce83d8c7f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX762060136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043b16e504184afccce20b16a70d5d2f93e6a4e773d36255428ff9a3a449a049. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR59R2114845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d162bf1693c05a7f82d907e30e384d4472942256aac6891761fe86c1cb8db2f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR96X2110274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebff13b3166e373c1942b8c5b73d7964d470454a01374092108eb9662a5ca8f8. 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/FRX202127064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9586109ad5f5a5890dae1f7ffdd06e06d2370598830393d962763b035aeba3b0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX872185359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd612091686a2b5d2b7bfd8f9e38c612300221e7fb51a699b6ed03969fc1a3565. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/DGA072312769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0126b44a951eebfbe5b9dcbfd7faf1ecd78213e8e47027211ecd64939932c9ca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA0P2424735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27ff88985adcaee13507b8c7b51a45f26d6044159bc1830fb71db1ab916b26. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA0P2424737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81788d716e6262f5de258dad0b60227cfb280f2ca3a62812c56c726682225483. 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/QM4TX2585014.