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 0x5779c31ec7124bdc246e958499fd32e2aed6319a97512a21159ca9ea969d7c88. 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/2d5c93f6-7a05-4761-a65d-a5c64cb631b6.json and https://artists.proofprofile.net/proofs/artist/2d5c93f6-7a05-4761-a65d-a5c64cb631b6.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 0x2a18816c2d368171c54bcc00c2933ffc9f121f029c375b1955abf02d638ec9ef. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:11Z), 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/ITG271800486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44330ca0e051bf17c14b24d18ac565db847cf9a3e3e1bf4b5d0977ab6ac4274c. 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/ITG271800487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529457f21d28c52bdc29d5ca00d0a24cf3ff5a9fc1c44647944450c15a21eb9f. 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/ITG271800488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b180f916bf2f11dd81abff1102206ddec0a6527097f4ec95c6c454b7c5d234. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:12Z), 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/ITG271800489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec12b9e7e0da9098c1b6c6674cc3621d41f212795511da90535795f5963c9d4. 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/ITG271800490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3fcb995ecc3d0262974b021c56e22c1f40e86031cf7a3d1c7ba196f0ae2bb6. 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/ITG271800497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41bd373d3979c21ca91dc665ef08804bae52ab84b7c96d557c1adbf26e44f7b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ITG272000805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414523b1fa139e6349741f1ca0fc939c7cee3a2bec91baeb893405e40c897a99. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITG272000807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307873376a3fd3dd7c3c026004b675198303816897aeeed7283a941670f0e3c5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITG272000808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be33c47361df1c8f05411fc95a0d55d360efec4f8d8f95b90d123f2e425a0b1. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ITG272000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e4bb67fc8c42ea94b9aa6509c587dd3ea2c62f38d3c7458cd7c36bb7f8899a. 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/ITG272000811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1351ed67b86eedc95eb7100e9e241acbdf4b4a67ccfe2537603a96aca47b6cd. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ITG272000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcea236f0a627112a2499fb64bde3aefadcb0a12a290267a3eb921d7193f0eb0. 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/ITG272000813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd6989649d1fe6827cc875fb754be573e4ebef883e7efd2df6c354ef6b996da. 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/ITG272000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a098c74c83bce8b226bfb9a17fca9d1331206929c7b7513995846fec86b686. 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/ITG272000815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721911241334fc98c5f5f2e68978ff84a44751bb34b2db853c990ad9595f7c82. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:23Z), 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/ITG272000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4571bb5517eb6cc48f73d21c8dc5ad24ca83154bd7204fb94f42f5d6e86295af. 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/ITG272300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791d71abc1fc348d681cfa8ab0af2ce52614e32a14a6d1c60d0d528a8fd41182. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ITG272300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7211daa8c831d8961f35534db3e5454701df8eb8392a3c8e75c5c240066704fd. 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/ITG272300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9b15e4edee83b275c262f5c2a721f0e01808007b642f91bdebe21f90bfa364. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ITG272300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4058bfcc0cac53f57c03b1101a7ab3bed8f5565ba35a25b7b2fb81ac2036ebb8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/ITG272300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc9752479fd92fee89ad4dd8b508724173c2da01f3178f03b28157e9b4a83aa. 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/ITG272300107.