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 0xbc5d98c84aca100ee506a0271605a4abe3d845e52b46482623f2b536077c8297. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1026bd73-77c5-4211-9d34-8763820b118c.json and https://artists.proofprofile.net/proofs/artist/1026bd73-77c5-4211-9d34-8763820b118c.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 0xe27a544e3c2409871ea4dad1df72fec9fad330121753365aa7ad6284e0ca68d4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRVR10500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44be218190fc9a3dea04ea099ebece5f110ed774374cb6f4458ec123de1dd1bc. 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/BRSO10402789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029070d3991ffb087a53ac3112b674e50b646eb71ad502f4e3ced861878cb260. 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/BRVR10500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae9d19938a6073ff316fb2b76c7ad236c8a13dc7b774739797b96acf5fc37b5. 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/BRVR10500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1853d965f48d0604d93857a4516e25bf7b60e3d6af6ada4d21eb7e0fb425ab. 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/BRVR10500613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578669e334a0e5beb0d9f0e515b84f57b9cc9bc7d2f77f0bff393479ea67b354. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRA220504852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f108491e11c56e163752880c2e15eb94650ab33d65ab42999fa7236fce54cb. 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/QM6MZ1595362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788b5316b8c57a0bcf5edf90bc7f9cf92e8814acaaadb4859a5592ae29956e63. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/BRVR10500728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ce3820fd9304a0dff9c7c98f4a348b483a94aed094169f877f9aad27ec859. 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/BRVR10600478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759ac89423195d1880f0cee6d4dd4fe8dacb387fde9c552f1ae5400361d897f1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRVR10600481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0fcde4d07319b55ec96d5a3199495dc50e3fb133bfea76597b2a08e807c850. 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/BRVR10500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9ff838e03cba6e47e9c6a785d55348c1cab52a55c979cd029b7d56d72442b5. 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/BRVR10500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae9d19938a6073ff316fb2b76c7ad236c8a13dc7b774739797b96acf5fc37b5. 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/BRVR10500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549e113021fd887c92db6fc9e980695365241946eb7070f8f9164b95b737c593. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRVR10500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd703eac7bb0bc9a6c18dd453469d41aaeecea192e4358f5d5c4b26e2e047b210. 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/BRVR10500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab97c64962c59252e9e99b3eb404ea55ecea92f1686554b311c7fcabe6753a1b. 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/BRVR10500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe488c669ba8fb9397c699d3841ec8991197ec0a945c79b95cf1d76d9c42ca7e5. 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/BRVR10600934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3eeb656444457db3f4967462484f8d06a3c4036642e5394df8e6828bc9483b. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/BRVR10600750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9ff838e03cba6e47e9c6a785d55348c1cab52a55c979cd029b7d56d72442b5. 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/BRVR10500058.