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 0x94913b70a2fac37c3a09d4f3ffc8f3579c4e80287404166b78dcc0034155d5eb. 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/f692916c-4953-4d44-8f0c-b9b1f7c37673.json and https://artists.proofprofile.net/proofs/artist/f692916c-4953-4d44-8f0c-b9b1f7c37673.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 0xb40ec280b84c0383003bd19643f3dcc9c44a3257e5bd9ff350694fa69ad40363. 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/QZNWX2280380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac1d81696024ed9a0d1b69150b6be520cea3fc6b3c9ed82b8470b4293514f3c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWY2214628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35bbd6cd8f5eb34b903e75639023c524f573bb38100e91b849ebd6595ccede0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWZ2235839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071eaf9e7e332117011fd86632ef6c82d00630d338ba044243ecbfb18f7ee115. 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/QZRP42272997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa741f192ae0209b1b5ba0819dc545f589c071809313b14677ac8e6cbb92f296. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFJ2352690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80bcc571fcccc83d69080076a3a9fb033a02775cfb1c9f7254cca98e454156. 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/QZTBE2463758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c446de33dd26cc5ad266ba6637a7aa175b1358ae5da9ce009c376e68e37e97. 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/QZTBD2495093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b8aff29b208ea749a0eee354872b048fc42e28a23c9159c75e5465b0ad008e. 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/QZTBD2491570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24119f4bfe1f29e751d28b46125bc4d27fd76f0318d647ab0f51bbed20500859. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:37:05Z), 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/QZTBD2497402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab86f1321bd8ed7423bba8d874cbe8cb4f4d0cc13ca921592c3a9c42f862ea9. 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/QZNWQ2365517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a765be78bd326413bb81503b58a832c4ec992d0eaaa7b93fb9fd5a41f0b44c. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWS2379756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d9eabb486b3f70c2e79eeb73c7035f8172dace7fbc3e0320d1b31d84027fec. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWS2345986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4151bf8393de9b991370103c09c1eb6b6fd1489afbe1301b33a721301217bcc. 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/QZTBD2498923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501daf3613166e7e5d5e7f5ee8eb2c45ebffc2c9d4117129ba78494b5de10875. 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/QZTAU2321790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0e12df7e6c0171f2f2da59f9b5077057ec8b1902cd5d42736b7f9382c3137d. 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/QZWFJ2366475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe940d1b23ce6048d822009fe289b2d17fe3fae269da68cb1ef66ea24018d4d4d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFP2304118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9ef030fe0815668e260698ed422d38a0b25a522d0a4b87596001697287922b. 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/QZTBD2485211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eee106f31b1c5e88ef18aab4ce50ffaab152aeb759699321ea62b8292357b5c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZTBD2482046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc251286a832dae371c19d23c68cbcf0ef1fb19a06b06edb59be29cf37a5e1797. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:53Z), 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/QZK6F2416938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23db534f12ded9b70dab11d34fb8b7332871be3274a03c5ee0c1ef5aa996ce21. 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/QZK6F2447151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1aaef9e50716d36105138e33a8187cc24b60f6087ba14c3748ded38d2ec8c3. 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/QZTBD2482006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccde8520c98b89569fb709ff71ac47c393183737eac2d8a73a9928e55ec55a77. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZTBD2479876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27773ba15837ec502b1840483d4edde8f7e60c7e1827f0f4aa0672f05b34893e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTBD2481985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad966aa7d8ab01cdb4dd4a5c114da71d357f01a056192d4e71b032fbde7529f0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ7L2478119.