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 0xf18fcb57296d6db4d9ddfa2cc720648cf708200a96540bc663eef33c4bf3a459. 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/972671fd-8eda-4e21-bdbc-e7763fc63c2b.json and https://artists.proofprofile.net/proofs/artist/972671fd-8eda-4e21-bdbc-e7763fc63c2b.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 0xa8924d88f426883575eec1920f54e433d9d32d48af8aaf35e83ad7ee14c61273. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92397750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2cb86fb0ddc150b14b7876824756dae32b6d2381afc3f68b3346f3e80b04b2. 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/QMDA62327225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7c2d5bca23b2cdb6f9fd8d5afa91125e2ba8db3271b9c0659a80d4b39a7847. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62327228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a9d4e7a1dd302fa08f62fbeb6bb9b78b124a76fdb2b01d6740f6d2978bd2cd. 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/QMDA62327235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fb544a388600249c827a3c2bad63a5aa7ebaf10ec31796ffc52f7be2fa5d21. 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/QMDA62327230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0439a7e8723517e6a5055075272e3bdd21c57040a349e5cdce8c5daf76380499. 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/QMDA62327236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589aadd050bec49ebd764d396d7e2d6c3ac9e9bdabb093b30ee0f0d19804dc2e. 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/QMDA62327229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fd219989c74680cbac791b1a3ca496e90773f44a3eee30d0377361a067578c. 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/QMDA62327232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315345b9066401ec175e39185dcdb2a030144625357e7ed6439beeb746c32a67. 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/QMDA62327231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d5df9504aa85e145a88b32a9f782b7a533f206125baca4e259b879d3dca2b. 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/QMDA62327226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e284ecb5f64a170afa579570aff27c411905b55accbeadedd837d7d87159c4. 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/QMDA62327234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7fd1f119fd56d4dee2aa23e1998a31a1fe44cce36c450906dc5a3a1d3963e2. 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/QMDA62327233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af878146c2f0dd3efe3e69fc97032890f037967a2e67eedfb714eae15932b09. 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/ES5022100378.