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 0xb6eb7d03edbc41c51e1b7e35575ce7a1f3496aaf360363886059cbb12beead2d. 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/cee2556f-4c57-4ab4-96ef-492414b9951b.json and https://artists.proofprofile.net/proofs/artist/cee2556f-4c57-4ab4-96ef-492414b9951b.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 0x44d1a367bdb10a7b1bda2fb797d24207ea41d70b0b708d442da17cc694536aef. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:22:05Z), 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/NLRD51632545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e74c5cf5e09d4898c48b9eabb6796adbd4c01d776faead17da4c8bfde39233. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:16Z), 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/NLRD51632564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdd9be989067f811c691ed9041c91473a01e1b4a1e0038b1b29f7059805699e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/NL1LE2202736.
Melting In My Bedroom and Everything Is Ok
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110bbb42ca98ff317592aa66c85ba8794bb297ca4b9a67f13bb0b2e43ed810b4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMHK2580826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a34fda6c6cd6bbdd0b2a97552143279bb3eae1ebaf6b32c9f6c8b629c1900a1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM42K2590921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93e65657737ddba4ec2d9fea1a686b88ccefa922f30a0d98c32f3c523c64231. 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/QZH6S1900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0377cf1c1291b5d4990011dc3e10d5a82b59faa3c1bf02a9331f5bc059b67ace. 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/QZH6S1900450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ec6f7dbe8b4f4e7225da0a05d269638ed0d574ff490f7741516910d821ccf2. 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/QZH6S1900334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7040d7beb140287562b1edb43f4ce361f81bb2897360fc171e9463c0bda3b72. 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/QZH6S1900349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3093af23936a74b23cc9e146778580470bbb17929d463ba7deb382289ce28482. 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/QM24S1916916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6e61775953a4a27af1a9a6ca8ef008e83da77749028894a6c752c90032b088. 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/NL1LE2302881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5145b42f205baf3a19d45cbcd59b6860bc442d20c469874bc9612a9410d2313. 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/GBKQU1957461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd74f4b755cfd5c5ea97158f2394b31a0f4ad8679baeb0b9f5de16d013dbc299. 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/GBLV61811337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9094ad36cf2bb5d70edf4419ea9f9f620cee61abd73e57f34f3d6f63c667931. 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/GBKQU1978831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f8d7829b7a5740fa2f522975e6680776f5e145ed9d91589f0bf096d21a5450. 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/NL1LE2102056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffcdff51b2275235ad38021e294f4bb14af69b98ea47e38e822feef8475512d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU1852681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432fd7a5b7e8c7feb64b1c376dceeac5e814a8754f08bbeeabfa132e684af084. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QM24S1916927.
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 0x5fe9509ecfe2b688f77bd66d30e20ff2b14a2926fa630a54080e1042a075c6d1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USA2P2403006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a32de32f59e58525c52d1615e9228c6ab6d1cf3eca40cdbd2e0cb2ec1822dc. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USA2P2403007.