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 0x792895e2f7b8809f91e32376994335618e4882ed44bdacb6a8c673767514adc2. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17818d66-0dac-4334-9db6-a89e631f0142.json and https://artists.proofprofile.net/proofs/artist/17818d66-0dac-4334-9db6-a89e631f0142.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 0x10fe03e3ed1b917c1515c5b73328ebe13efcd8c9423b8f0bfbd5e575b442624e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:19Z), 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/QZTAX2304373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f28d9503597437cae994b7b0530e800436d87cc98c74afb871acf0ddb71317. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:06:14Z), 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/QZTAX2359706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0634e8c20c9e6db3db5d7ceabff40b519d43a857450fcb0820b900d8985883e. 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/QZWFG2357592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8117c0c356bb1deb97f43e12deaf4eb65807abeb8db1a39c1668bbae2729f0. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:21Z), 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/QZWFJ2358655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcef6bae409e86e1b3b964266679127503fbad4f674ef394f41e52f5e341c970. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:29Z), 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/QZWFP2316166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82faa4e85adcbbe3735968ea3d28cf5be58c8998e98d429d154af07f5187867a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:41Z), 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/QZFYZ2417760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6f90dbed57bf5d28610efda854ef9e859f591597fa439c2fccd41cc6fcced6. 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/QZFZ42404900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2602abdf38a76d7097544e5e81fcd6329102b83565753fea0f4444437826a801. 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/QZFZ42404901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7909594f28ee4be8bb26f57f27556bd8f4ac6227a5fb10f0b5ea95a7fbdec58f. 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/QZFZ42404902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c80c68eb4eff22161ad36d6cddc97def568bea5dab70b34aa6ea19b9f0c478. 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/QZFZ42404903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c655f5f867def6c4f354094451daceb07a131265d57e7d13f4a45a7434538df. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZDA52422965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a740c3bf9910446340cb33f82da1d7648312426318aa93d5f896f3828042d0a. 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/QZDA52423600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb934259a1614f01a133e9ea6a15bfd198f1a1e328fcbaf7d8edb903f1d7b931. 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/QZDA72435844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb5a51a7e0f54e081481c997f3872ee66ec2e67d978cf4b712f296ba63275b8. 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/QZHN72486681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6042ac34e420e144cd29515ea111117fcf8f56db7400404ee95736c1d55f1a93. 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/QZHNC2437631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e6bff511fed864960626f11d5abfbba96318b7eaeb3b8adca1ba5d8fe3a348. 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/QZNWX2485592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3c666743425a12554def566d9e4678747e43ec146e1e4bf8cd1c2739d36714. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNWX2485593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58319f62afff0441334893380a33e992681b538adf854f92fa0725c92346794f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWX2485594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0c919d32cad48e4413b943c24d8c0925ede3f1282d9a6d38be90720ded208f. 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/QZTAU2421070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0492c8e33ec646637f822cb4bae0997c23aa155a9b85f8ab0551bf6e4cf39df0. 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/QZTBC2417761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813582b9114d74bbb5f7ad3f74c9ca40371d4db522928df15545cbee85af35bc. 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/QZWFQ2497235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4e01889566d6740ea9237e69b94e5705893d653849d06d2e975a44fc774629. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ792413817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfb53b963f56c16b1bbb295cf0e41f1cb56a91155e74fc86a59bf4003f51e39. 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/QZZ7N2484355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98e772768d1dad2632d52a759c6f1e2da18d045544b11a71f62a18d99f46246. 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/QT3EX2476136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f9454c06b797911ef3578b8907caec2b8fb446b30f71ef8f8e05277e6bb577. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QT3EZ2478346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8df629dd269e594e4d99290387ac9c7913772e117666f9524932d8d4eba458. 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/QT3EZ2479936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9bbacfea4812cb71a720a22f242fc0a73d487e1bd1efb53c0b951ee441c326. 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/QT3EZ2475765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ead579625ed6a9cb7583d9b0755740a1faff6b8fe89fbfd6a566b82497052d7. 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/QZTAT2545479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc65016b1f2f7a0c09d42247f6e16a5f8d576c832eb39bdd9be32b9375c16fd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTB72580233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450c1f66970c2c2ee0145d49be665a1a256fe0055dabd0e3bfede1e900790a6f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7V2568914.