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 0x0adefe0d9b8d605b99b16dd62ac361255c861a262765ff0a2232fb63c013beef. 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/16a1f4b7-776f-4529-8d66-71b01124ee54.json and https://artists.proofprofile.net/proofs/artist/16a1f4b7-776f-4529-8d66-71b01124ee54.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 0x57487e1397a6dc3294fe68512b750e5d40b3be05310eaae9e2ee72b58d590da7. 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/USCGJ2091439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c81ea0e51c94771b40054aab50207ce2e8f615b72640e2a2c4658f1adbd2b89. 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/USCGJ2091445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd19b3049df6916c5738d0829047b23c5df603fb3ca65c1e1568cb3759b9398. 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/USCGJ2091447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25db87f8bdb05199965a6f40d1a9cc96bd26601066a8105f47753d5640a23ba4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGJ2091450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebe3745db2913139d6d1aaffc2b3c7351af4728029d6d32a58e9ec823f389a5. 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/USCGJ2091454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1716b52b805a7bedd9d13fe492809de3d84bb019fab23ada031d8cc9e251844f. 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/USX9P2003361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19f2fef16869297c828e07c7e246df37dba331ce9f5249c6c69b700235244b2. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:27:51Z), 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/USX9P2003363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cd4a4f658c41f38418fc389001e48c2bc9f0c3006df3b4aafc0a28071ede74. 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/USX9P2003364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33491f37a2a020483aa51f8e72077d541f6b6105e2d38547be4f6a2ae99e0d34. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USX9P2003372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7514feea7fd2d327d3e335c420f43ab38b98118de7bfab32719810cd16d5180. 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/USCGJ2083603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ae273a2ba819d52adf43f4636134bd639b885f3ad87c3ac8c392ab04c1a327. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USCGJ2083604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142f01985b5cde2ff72966bea0d8fdb61ab7ff7926cc4d703334140a99b1abb5. 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/USCGJ2083605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43fc99a82d537f29ecfd9c3c4438ff2dba253b68e635dadf57119ef091139cb. 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/USCGJ2083607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd5edb6784a1c881c50df8d349baaeef9e10a1dd80daeed1775f51562576bc6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:03Z), 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/USCGJ2083608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62b28b5032461cb14c0931fa663b66a892670d834f190ac479f3710a4f2f311. 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/USCGJ2083611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce442e6379768c8ea41ad3f79fe5c9095d53094712a7c572ab5d8fb8dc0e208. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ2090751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b25e74b18d46957661d73c0f164f043c426f87ff81f5d0eb45369c013dd354. 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/USCGJ2090752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b13ed57d2415a421d8cf47a7f6d51107778e04118d04e07ac8793a75973086. 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/USCGJ2090753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb17dc55f5815735a3b4d2347fdec985bba6844d0f4c87e8d521968f69e9b802. 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/USCGJ2090757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a20f1226afebf5580b05db3b32678d3e5ba5aa160433a815398baccd49fa624. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ2090759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25441025261661505aa0674c2c609d4c07693a997905700dc9788e25219e145. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:44Z), 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/USCGJ2083552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2f52214b6613253220fc528f3ad35fd5469f0bd67e861999dbed23e19d84f7. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:23:15Z), 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/USCGJ2083553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ff206e7fd1cdf1bc29212651ddea43ece3f6d1f7a6914e9e28512be5b0782e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USCGJ2083554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c76aa51b74b40cdef619309a6bb3393644d152bb5f8afdd65477a6a0ce7eb5c. 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/USCGJ2083556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da055b967906e79bcac8c37c714058e5ef8f1f7ad2223d02304107aa3b5c56a. 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/USCGJ2083557.