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 0x55ee7d2f287fdddce523d7194dde0ad26972a9a685584e0a27b7fcca07a9ae67. 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/300392d9-a3fd-4d16-b8bd-a793fa8a0605.json and https://artists.proofprofile.net/proofs/artist/300392d9-a3fd-4d16-b8bd-a793fa8a0605.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 0x604485d51069bbd89bb6e54cb9eb1afc6ec2279b320dc3c73a23a5c2f8c27174. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/SE5IB1600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a718be86e62cea5462210a3e4da29ed978bcf53f52f6fc27b813b98238faac4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5IB1600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604485d51069bbd89bb6e54cb9eb1afc6ec2279b320dc3c73a23a5c2f8c27174. 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/SE5IB1600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a718be86e62cea5462210a3e4da29ed978bcf53f52f6fc27b813b98238faac4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE5IB1600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604485d51069bbd89bb6e54cb9eb1afc6ec2279b320dc3c73a23a5c2f8c27174. 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/SE5IB1600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea87ab53e3fd5754e6c41f16c04448a94c51dc8274c261350966bb9eb138ab03. 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/SE5IB1600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea87ab53e3fd5754e6c41f16c04448a94c51dc8274c261350966bb9eb138ab03. 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/SE5IB1600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a718be86e62cea5462210a3e4da29ed978bcf53f52f6fc27b813b98238faac4. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE5IB1600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604485d51069bbd89bb6e54cb9eb1afc6ec2279b320dc3c73a23a5c2f8c27174. 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/SE5IB1600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea87ab53e3fd5754e6c41f16c04448a94c51dc8274c261350966bb9eb138ab03. 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/SE5IB1600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a718be86e62cea5462210a3e4da29ed978bcf53f52f6fc27b813b98238faac4. 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/SE5IB1600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604485d51069bbd89bb6e54cb9eb1afc6ec2279b320dc3c73a23a5c2f8c27174. 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/SE5IB1600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a718be86e62cea5462210a3e4da29ed978bcf53f52f6fc27b813b98238faac4. 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/SE5IB1600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604485d51069bbd89bb6e54cb9eb1afc6ec2279b320dc3c73a23a5c2f8c27174. 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/SE5IB1600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea87ab53e3fd5754e6c41f16c04448a94c51dc8274c261350966bb9eb138ab03. 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/SE5IB1600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a718be86e62cea5462210a3e4da29ed978bcf53f52f6fc27b813b98238faac4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE5IB1600250.