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 0xd37ee7bb3b239a4f7bc405b1fe469310a6222974f28be8060aeb81d762279b41. 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/066c52e9-c3b0-466d-ac88-304494b00aa2.json and https://artists.proofprofile.net/proofs/artist/066c52e9-c3b0-466d-ac88-304494b00aa2.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 0xbbdacd1326c3d6abab72fb60479d9982292b28a861e7431145b87b0d142496ec. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJB2455647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182eb6fb3fd9ab60eb08f3a5ce95176f819549f00539d2be523e5318c8dd35c4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAJA2484114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55ece9436991cdf6ee54a964668395cffcb319be1ff2eea4d2e9ec9d27d99bb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:51Z), 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/TCAJA2484039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd210b118813365c3a22c38ed4cc55996148fec28d508073eb7e8d44d0e911abe. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:04:29Z), 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/TCAJB2442364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c485f9a7b26d59e500cfa7799301e91d2ec1b93d9180825a4fd45417884a49c. 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/TCAJB2479515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20b5ae3622fb208623ac8eeea7ee9af83229b725c377902a8d480c7c5edee3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCAJB2479573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a59f2609c3c5563cd152c63d09694cdcfd6380f8705ba28262cc77df7b378b. 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/TCAJB2479608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3415e6e430eeca82669938060d4b6c464c3465d1372ff1e271c0669ac92550. 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/TCAJB2479488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82ead2d04bfeea738f69eedb276b999c3e1d1daeb92dffa60ca6327fc370192. 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/TCAJB2479547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc294a30c2ad548cc1208b35a866d7495f1896e9988ff1c5a7074fd94b08bce08. 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/TCAJC2416155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039ef38bf14e8e4e117aaeb656f352f53dcb5fe7bbad8c856d3a1daba9e21d9b. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:20:19Z), 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/TCAJC2417718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c982a4e7a3e8a2f03b7dd46cfd536f366003f41336da45efc9824e57e6e2a8. 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/TCAJC2417763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ffbe74d65f9efc0c964a406a77b43837d9504ba2dcb735fdbd9a01a9a122aa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJC2416127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2976c2621042020f71dd85aa0ccaf8eb6926a0802d42ef8f39e884fc2b0eecc. 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/TCAJD2454415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8169ab47734a7849ce92ad63f03ed9a2d40edf4d0c02a9fed39ebc62746cb0e. 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/TCAJC2454359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc875438f99b009b15781b431768e5291c634e49a02fd377fb9ca0b8ae38fd61. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:50Z), 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/TCAJD2454245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc38cc0a5aa21f5329930359a71a745fb440511fb518acae465c720f289465d. 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/TCAJC2489521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c493a904fa0de1674cc8bd50fe0cfb6548746f23bf58e83c2674409e6480c30. 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/TCAJC2489461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04cd409cba9351310915a1641c3a48fdfb9a617b2d859fda8f9106648b095b5. 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/TCAJC2489559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772189e11c22569985f9f95d9009eeaf83637935c6f0e099da238e69a3b58317. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:29Z), 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/TCAJC2489538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb466874c508240cc4f15468bc47b849f3b443b2b5fe1d6185d7abed9b4fbe46d. 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/TCAJD2439115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72ad8d802ca05045625f24554c7bdfe5916c8030c5b9bdc93dcebfb9903988b. 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/TCAJE2545304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad12af19f3bf34689ffab58887d6863276f7bdf2c17033b075b37ba77d4a822. 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/TCAJE2545371.