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 0x414dc69432b76e63ea4a9676af301f9d42ae4c8a0fe5597c4d1aef10017b0ce9. 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/35f295d2-ae2e-45a2-aaf5-73800b051bf7.json and https://artists.proofprofile.net/proofs/artist/35f295d2-ae2e-45a2-aaf5-73800b051bf7.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 0xfffdd90e83011fb42a254489278147276bada9cce5d173e146e1bcaa8048d9de. 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/GBMA22451944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de94001969f97850179ec082729506ebdff85462c23c10973c59c75149e1f2e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBMA22451945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6a4310de36442ccaf923edb2a1cb10128d4b7bcbb9bc6f8c5a17759dac754a. 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/GBMA22451946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe869ceb91e26d1a7cceb474c243d4b1caecf80ecb305b6de8882b0a74140b7f5. 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/GBMA22451947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5038acae4761445a98b9e12d48fa38e853207ca05032c520df91be2d67906a7. 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/GBMA22451949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca6c08130e9c8a15174276f3b7b20b9e077380bdbca50fba026058bf608729a. 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/GBMA22451950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5bedd8a86f23e75a57024960d15572dd96326085f4e3fb2bea85d21092356d. 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/GBMA22451951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900390b4eab059eb87fc13bcca14301665f3993506e8c59a474bebb3b10f3b01. 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/GBMA22451952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda1b0ba58048a79725c257a5355dbfa46818cd693f2f94bce07eb9e1d72ca2e. 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/GBMA22451953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffa04346eb5811b40fc5a3eeedcaf32e7169d3c1bf8015b88dd095306077b5d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBMA22451954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba400bf4d5ace8ab04a2434c125deb3789781b2833ce9976e12563d1d41dd94. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:48:12Z), 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/GBMA22451955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2d6aeac7eb47032d091d3a321ee8a2e3cbd8c166cd0a8edd9fc86fc14be143. 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/GBMA22451962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd050613437c3665426fd445242d8f7e2e552aab3fb0dfac7e415accdcd387947. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBMA22451963.