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 0x32406bbdaa5a16b0aae046c30e40dedd6cc758c250ec69c3fb5fdd955a43c07e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0f9b10b-5c33-4cd8-b037-205cccb92606.json and https://artists.proofprofile.net/proofs/artist/d0f9b10b-5c33-4cd8-b037-205cccb92606.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 0xe31bed3022fddb93299ba80aa961df8c6265cbb6984312eb431d194cb856635d. 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/USUM70609081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c599d75f6cb619781f0b4282776e6e6e8dafc942718f697cc8709676b53fae. 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/USUM70613796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caa046da8af09b1e29a7faf75e51aa9e2f4abb2be7a41b7d8da8967a58eb3b3. 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/USUM70610945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3f612439e02699ce98b00113a1fe203ff58310dc901be5be599a52aa42cc0. 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/USUM70613808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226773b91dd16fc3a121b3647402165ee3826e507edf49e7d3d5e85f1471b3cb. 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/USUM70613809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd951f4132cdabb7db1acc4241de9afc87ff48c57852cea8cf9ea7732646c1f4. 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/USUM70609906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1ca6df9229cf7a7d70ad7b89493c32f9f654284ebf877c1e2f360a7fe4ac76. 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/USUM70614028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caa046da8af09b1e29a7faf75e51aa9e2f4abb2be7a41b7d8da8967a58eb3b3. 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/USUM70610945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c20afce2627a0467a7bbc72639633da45779960af34fd97af782a2c89fb99b. 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/USUM70613826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd951f4132cdabb7db1acc4241de9afc87ff48c57852cea8cf9ea7732646c1f4. 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/USUM70609906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f15c2fd3a4076d45a8df3b5482ff8c0b89b827b74d389352cae4ec2448f609. 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/USUM70613810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b98d6b8172a5b66575253ef66adb5c230a54d4f4984c9f40eed8e3b47ef3af. 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/USUM70613530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e8ccce65c402653920b381932a4ee8802e7a4d01d23635ea135980f960c6e8. 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/USUM70613812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d11cd921bc144951da923710dae9546a2fbd381f3494a49796cd406d1ef336. 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/USUM70612323.
When Your Heart Stops Beating - AOL Music Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf4a15f02bdab406cebf4f43727bec164555176ff3cb02e228c052100767b80. 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/USUM70722011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbc3204227633f432f1f0ad23b9a5a7002217adac47aa33b372859c42972e0f. 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/USUM70700987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c20afce2627a0467a7bbc72639633da45779960af34fd97af782a2c89fb99b. 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/USUM70613826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e8ccce65c402653920b381932a4ee8802e7a4d01d23635ea135980f960c6e8. 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/USUM70613812.