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 0xc76e37a0e7f76f0e850ff6b0b5f2530938b9c8a12437158ca216ff5d0b0492c6. 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/7c569ee8-1ff5-41bd-9ff6-7d460e1d60aa.json and https://artists.proofprofile.net/proofs/artist/7c569ee8-1ff5-41bd-9ff6-7d460e1d60aa.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 0x82768cdc29382103375c7c4757e8b980ebadee329e5b81cd539962e2aaf2225f. 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/USJ3V1220327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f86066e32dffb2a35eea404dea9c182e919dd3d51cb0ced9a37b33f1489537a. 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/USJ3V1220328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdcb5933a50b78d83b98f70847bb908d6d534854fb703d5531621d7bbd9d9e3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:03:31Z), 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/USJ3V1220329.
Wonderful Merciful Saviour (feat. Lindile Ngcobo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167c5676003a955751fe3931bb997f8796e68ac6b9dc37dd65fb6e00dae376d6. 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/USX9P1448113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b41387230a8bdf74442fd7651ecf4feb37404dda8d092c7397dfd8e07c4e5a3. 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/USX9P1448114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc3e97f6fed4d986663d30c682e4a46b1066dfb411747b0e20ee1ac75214718. 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/USX9P1448120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de24a468a8b307ef2d3af0838e9f17c695629be8ff86ba62774c10ff0c31ffd. 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/USCGH1702877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625f3c44aecee6794618d50129707d3a4c75a87cfb0b538fe16b61e245d6570e. 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/USCGH1702879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fcefef3f4ea976fadb485c303c77dfe70c7d142bfea4fe4c3ee3853da6543c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:24:25Z), 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/USCGH1702880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8283ca6475ae07f8d79efbbef509ff2d54dda8ee171314a71216d4c01ac87ad8. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USCGH1702886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c451492d65d3a6d16376d67babb5860bcb1568ca4f99005273e3176eabc45e. 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/QZFZ61947469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245df4d237a79c78e7b7c98955dabb4d4f016f76e7071f0e2d56ea27310f1c42. 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/QZFZ61947471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b94734cce7b695e625040f87358af4a3abeebc460a9f9e38f20a3c9890a598. 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/QZFZ61947479.
Amazing Grace (He Looked Beyond My Faults)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd277d5a94934d5b6e8275955a9e68fbff6a31e65f61e9182a8db7075a8ad1527. 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/USX9P2372340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc228cb164da08b7697eda0fb4ec691489aa4e87b2d294241ff00363e51773d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USX9P2372342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff243d27e4b44a4802e1e4431e904529884555cac8e8383cc00d9645d8210889. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:36:37Z), 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/USX9P2372344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c48a1bc50762a6cbd300b5c020e0aa0c3ed9dc323c2f0ae746c92dd3116a2a2. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USX9P2372345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a15274b63d4f2d6a9693acd02265edc3e198558d717cffb72edc1cda28b73b. 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/USX9P2372346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7029e3c0314fa166152b42b1a2a6c5d724e5bcb2293634895e8e821352f63d3b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:25Z), 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/USX9P2372352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27313e670f9691c68fd261328ac5155aeacd95c79ecfb089edd1ea961b4de3fa. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZZ7W2469099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaefc32522de98226c7465e3b089592233feff6f76d6d4fbd2917f6da715e01. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:16Z), 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/QZZ7W2469100.