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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7c6964d526a237a392a31ec3e2e950b421620d1896b65038c18e7b1f9c917e. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd5515ca-46ac-4ad2-be67-d04f7530ea86.json and https://artists.proofprofile.net/proofs/artist/cd5515ca-46ac-4ad2-be67-d04f7530ea86.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ceb0bc9eecfdf5115ebada77d15b543d6bb3a6ce38395715ba782acb7e94ec. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAU2368097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5f68e189cfbbd710b8ef48e5933e88e4abc9c73a37b5ca0270f9e80a731f63. 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/QZTAU2368098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df97ec933ba0d184821520dae01013ecf52e1860c167b106aa4801d4c87ca1. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZTAU2368101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd624f2194111fe198476892c5f1d67c6b204e4cd2970ad68699ccbc471f7179f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZTAU2368102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dde44575dea959d893172615d44f809f49626f63e8c375a9ab5ac975e7e265. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZTAU2368103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94781092220d7fb6437a9dea7770d19d15590cffc2139b5a06f563b3792f574. 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/QZTAY2373674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd0c1e3882661a7e05eb12dae78c243f8378f7d9191827bd3b105e3d20c8ce6. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZWFP2311136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0cddbfc688b04a79b57a86cd6b399df55b8fa91cdfac09a1bbc749e3d4345c. 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/QZWFP2311137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cbbb933b41ce1a2609b5fbf9ee7cd6e25cde4be63c7bed793362d9d7eb9728. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFR2399082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9064229f57be3bd390aa874076e6b91c1440193d11880298309b5b75336d58f9. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZFZ32457257.
Old fire...get ready for new fire.... coming soon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6a64bcc388bcd4b1349c0429228bee41937e557f4343f8d6e957e9049635fd. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZMEM2457147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc4b4e5e9ee57d1579294ef3bb3d9dc1250eff3c6356615fed35b0f80a44761. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZMEM2457149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e1d802645ed0a88638ff3909c7d7f49eca9ee0904ed038bd8cc7c4bf6631e1. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZTBC2466553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88f02fad8b97bf98f9460caddefc82be6faf4dd6c793d44b95bb859c7ea74b3. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZZ7S2488584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff238587fdd07751a6f7b25dd357112a2d02e0b4919b91484c2b1532fd5586aa. 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/QZTAY2523327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c5ed40724cb93326d6cfa3e9f1976d0383fdae067af8d7b935de32b5d238b2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBF2513561.