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 0x5f86a23221b8650267d0695e569699333121075473469abaf6b706f8da10dd74. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65eb8c41-b99c-474d-af79-a6526b43d51d.json and https://artists.proofprofile.net/proofs/artist/65eb8c41-b99c-474d-af79-a6526b43d51d.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 0xea08396a63d634242a895ef8ac81b3d8fe3db1e5afcb29fba94c509fabb9bd4a. 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/GBDHC1800803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536cd4c4a4a59f3c12a0e267c888e349c08d3ef17c1635b92cf1030bf28d4afc. 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/CA1TB1600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b4067a66253e4a3f9015adcfe97a7d7dfacb6a98f9ddd9c06bb812e475f050. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLR491300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9ede88d1932bbbf3a400f84c3f1e808c1e7766777b6fb2a16a6511695ffe54. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDHC1880501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d17a9a46a930947b7679bb0deddad9d19d0c5c17f03f8e1ef950528951ddb2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDHC1880503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7932224610c4c170a51e0bbc4c49355f5de8afaf6411a27373c46f0e37208b7. 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/GBDHC1880506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e91147e5675f1993163d3b1d901e8ae7314cef280d1425e4cb905a7f84dd9f. 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/GBDHC1880510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf007c5a928b7e14ae6691b3353b1716cab789a27a68ae26f9fb74e62db039. 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/GBDHC1880511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720dc3c9dbc24362b1bdb937316902eb416a2485a4236b761430d363df580ca4. 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/GBDHC1880512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b56d0655f232111824293de8ac2975adc78537d6ce128d387cc80cecda1ce21. 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/GBDHC1880513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b45facf1f702b33af5f4d1fec917ff4c16d7aed78902a2e43da3fd01a1aae5. 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/GBDHC1880515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f220cf1308f3a84c5cd8cb969bd93fa4075f16b363d97f194ec2281caa16b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDHC1879801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc91b49085004e2564866dc984cf955050b80e47503e13e349401fb445150d0d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDHC1879802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfa60ec4f143b9b2759391506b7489473f87466882486f75a148a719f7ca210. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBDHC1879803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb42ef32463e7bb06650125d94aed9d3c741ef34554aa097f626081561ccb48e. 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/GBDHC1879804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d69fc2d95bc041543812bb8e938722a9c7b0700552ce33d03e443bf5a29639. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBDHC1879805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd818ed3b9ab095bc2a7f90d615978431788ac81c72666fdf311872933e2a9d3. 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/GBDHC1879806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a6d251d7fb52f5950a093047de53dd30030e021bdda70cacb25595d482226b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDHC1879807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7341ab0cfe9b2bfadfc3b159f71dcc7245ccf5adab92a4cb352e4ac741308e2e. 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/GBDHC1879809.