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 0x9bb64f6bf941911e706ccdd49ae9ca56f4c43ddec8558f21f32e711502ea5a65. 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/bc08b019-99df-4662-a14b-6d42524ed61a.json and https://artists.proofprofile.net/proofs/artist/bc08b019-99df-4662-a14b-6d42524ed61a.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 0x69462fcb8dc9374e0c24778607e7e91393c30c306108e1cb82c3fb25bb92bdaa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:08Z), 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/QZW9M2404623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d63626f54784b6b633245debeb969a0504be3217fed9b20513dfeae0ff7817. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZW9M2404629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c8a08fde2ce32182dbb37bdd7e32626e515b20123ab8fb86fb6f4c4b0b0433. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZW9M2404632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb06945869807553a66a11876d3fc9a6d277cca187c89072b5ee7e4254d905f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZW9M2404445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3403cb3d98ae522ea15b3ce1ed893bb4fcd4136cef51c5ce158374f8cd8aac8. 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/QZW9M2408589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7217004c97e6dac7d64205d942c4b1873e1714ab7819f397cebdbd267a22508. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZW9M2408584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd7dc52167e2a4aa14cd458b5fdf15567f0dc99e2a57f520719738eaed3f55d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZW9M2408628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3baad0a9c6c2d0899d91e3f9c3c4e2fcbd925c2a75d46a0399abb6b9e8e36c6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZW9M2408590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b89aaf8579239d9251ba8cde4408ca9073e16d6e29c71c654eee932cfcf12e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZW9M2408624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e64d026b6c5980a3221e9cd08d510e3a0015e91a6bbab7340cbdc95a588cdc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZW9M2419246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288fef80799337b0e6553bf58e1f3523e4509d77e08e94f4a0e591931078e5fb. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:56:35Z), 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/QZW9M2419264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0189cb137902b7a6a5facba0e18fd497a4d5911d9a32f09371a8225ba3db1b7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZW9M2419208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cf0704fe121316eac1c6ac01e048bb92b3d22157c374649b7b1caf2f1650c4. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZW9M2419225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3561aae4698ca0934ea147aa71549340e6caa741a49242b7bb4f6322fcd307. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZW9M2419256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730858f58cab1b8b846683641cd303d266fb70120d88303d22cc1f38c5934bcd. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:58:05Z), 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/QZW9M2419226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc440a6826fc8c80ef7a16b008599da441d7daeb7740f0e97f1cb262572dee952. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZW9M2419252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf08e0dd0da36579b299f2ed44d2d8b05ea1b763f1cfd0f002d3cfcad7781f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:48:48Z), 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/QZW9M2419231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cb5b2bf415a2899ccc1cf48629aa6723d8a9d3ea8a52afd166680d7840896d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZW9M2419244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2df34e3c41650bc8b01168957ec580d7c2d9bf8a895aa39c8e59f31a6e9482. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZW9M2408587.