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 0x2d4f69860c78269473904186fbad04bece1d4c77d73bb3a970678d16a1e4f855. 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/d30e983a-0bfe-4cf7-8221-13699ec987b9.json and https://artists.proofprofile.net/proofs/artist/d30e983a-0bfe-4cf7-8221-13699ec987b9.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 0xc8d86f8e63c27cb09f048349ced502cdc28b16c8152b366e3c8bd7eb9f5faa94. 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/FR7Z21700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5abc097773b0d20984d285857f9d2d7bb98d0932dce1d0a904c322db6d4fce. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR7Z21700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af56fb2b3147c1413c094fd285f34afa9862010c0d903cd7af39865c401ec5b. 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/FR7Z21700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbe88c5e02f97328f453da56e6241bfa6b073a420d285ea70497a25c715faae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR05P2200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20157f00bb55c14549164688c6e24c0669962b1b4b720fb5ac24357ded3e209. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:48Z), 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/FR05P2200378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3b9de5b02366c945622152221894050e4a4d87643d63233e2fa748afe4df99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR05P2200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2736596a0aa5903e164b8144a998ea866653ea50c8e59bf5682bb820e337d50d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:53:54Z), 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/FR05P2200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046bfc14b7b693e58a6bbc8feb12a0717c94ba7d73495c3c19a6ec0b5680e697. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:08Z), 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/FR05P2200383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7383bbd253d3e5ff40098a4989681de2867f8052b0c50d22b5bab2b5c70da66. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:37:59Z), 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/FR05P2200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927c9161c8edb7a8c6c6487f6406b3feb16ba37eed231f6cdfe2cbd3b932b1da. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:21Z), 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/FR05P2200385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb755efb05535c2c221f868d94f3f5ca9092c34948c97efdf0840604d8bbd085f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR05P2300417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e21af6ee5ecbbd19d3a041b555b3082c4f3268fd2a4aaef4fc5609333bddd3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR05P2300421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53f4b44749e4bd8694b9196eaf568d34e88ce048588ec7256134398146f8176. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR05P2300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cac884cd72d85b7810887aedd5fc99d501926ed13b9394663d9ed09be1a97c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR05P2300423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c01fab956a53e7ced3b46fcbe952a832e19da908927186b031c1fc504de0109. 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/FR05P2400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0098d19854434272302fd5872aa1b62323bc3f34f744b44739f627343805c941. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR05P2400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc536a7ca7f8d2ce0c9700327e6ef23fc320e748f8e06ae5b23077c57090d10a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR05P2400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c01fab956a53e7ced3b46fcbe952a832e19da908927186b031c1fc504de0109. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR05P2400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbe88c5e02f97328f453da56e6241bfa6b073a420d285ea70497a25c715faae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR05P2200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1d8b0e9b1067d78612c1d96eb86866271cb5ce18979522c98d43c66a73c666. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR7Z21700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4702ed8a73584aa421ed14f1bd554a3e364d11207f15ebc149525f0656a432b2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR05P2000320.