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 0x8b3eb8e102db85395c72f05016a45333d4b7a82e0c31e94204e7fc9e90a4e575. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dc17540-3f11-4bd5-a334-6c804186ad86.json and https://artists.proofprofile.net/proofs/artist/3dc17540-3f11-4bd5-a334-6c804186ad86.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 0x575c35a9b4649a544def68c40dae04e6a72d86a6e121641e4c1c2ed4013a593c. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/CZBD40590201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf96edc87ff9880629d328831c020208382977dbb233f21304561648a26e47c. 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/CZBD40590202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987b16b8515af6702dbf5047d68c1823308cc33af0c9d335695dbe9b8c50b221. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:19:03Z), 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/CZBD40590203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac748ae1b6f5406d36a0e76091a3538b5862beb86f47aeeb3d4437428fbc435. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CZBD40590206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd404f6d08fe08af4a12c2198af91769fef97356ba7c637e0fff70caa75cf5f5b. 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/CZBD40590207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495d304e21c1d9cfebbdfe58d67a91bc68d5368f96067ab143882950ebcc7df9. 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/CZBD40590208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e246e78760c634f008704580dcb76bacf24d40834d1a71ebe26ac50c82772ea. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:19Z), 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/CZBD40590212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c87e2643477c227d29ec840f01f8d2f25b3898ad7db8b20f22cd7627bda7e3. 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/CZBD40790302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93644b492b6a2f3a3d4a6c4f0caececa867a66472ad345054e53805632cd7496. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEAR40925563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd569f8702b0826247cd58a2e5ad300dcd338dcac1f07547c5fae17e7cbf3c372. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEAR40925558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7228cb886ec3551e5aee59b20ccf2410cd2e73f302f60941cadc9a9f1e6f6a4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:59:50Z), 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/DEAR40925553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd2528b65c462480112d23d2d807c182b4badcfedf3fbad15de7b5a153d05cc. 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/CZBD41010701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0010eb2248bd6c41ad8f9618045e174fec60b18efdf5b8340f9820fb1d4002e4. 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/CZBD41010702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f4127f0ccd10fbbe7a15b17d1401d5a2b12889b8849b92bfa600c9b1d8b8a6. 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/CZBD41010703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7431a3dc161e2ac1df89db8a90d7528893a0718539bdfbebe0866b153146db. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CZBD41010704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c47f4974bbb746da3c20d0ee6ce4eec145629401bd621b0394c98e1deb4f90. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CZBD41010705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5af6c32c8459a7fe67feaafce396c998af9bbee1923c2a7d59bccd2418c792. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/CZBD41011604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5fc6cec44bf42144706e8b82ea36e32a70fad7810abf5ae110c802b9c9f0c3. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/CZBD41011607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd4c840a265ff911c9be3398ddacd8dc56d63580d9f7b7b6f44c708df2569ad. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:34:38Z), 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/CZBD41011608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e46dcffb21582f4c8e01713a055f135dadb50606b14d8dd2645536439d5655. 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/CZBD41590401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebf1a64c64c4e6bbf67d43039379bcbdac4bbdd5c39c1f4220d5df618e658c4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:08:22Z), 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/CZBD41590403.