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 0x74c82fefc6b5daaf62dc5f5deb45de5f0a080226b34faceb1869705377aa87c3. 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/36819aa2-eb1a-482f-b7cc-3b44062e5a8a.json and https://artists.proofprofile.net/proofs/artist/36819aa2-eb1a-482f-b7cc-3b44062e5a8a.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 0xc3df897ac73b91e0986810befb1e2ad55e27ccfa77dc6a3ca15aff6f19ee48db. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:40:53Z), 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/TCACW1611656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f69ff958d2e51bd8d5ad5fa6b869c83404359094971746bcecc64530d3d76f. 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/TCACW1611662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb473aaaa7ab554d6ec9fa854588bed78c235cd17dd031c3ac15702cc34787a15. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADI1706943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eaefc739b144d7e837c7333e48f8e3338c907e0657cc93fe6a34b8b7db269f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:30Z), 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/TCADK1768475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43bb6c82266eccfd3eed7223a80f73a4d699945b0417de4d2095332a4ec92c0. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZMZ92006247.
Down & Out (And Punked) (feat. Landon Cube & raspy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b884aa753e8fdddbfc03ec4e4c30a20eed420b6a9937e0271423ad40bdff2f. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QZHZ42174699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50de00d96c8b0ee6e32075b44d64304b4c35167e13b733238bf0256e059bb673. 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/QZHZ42174701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e463b2d44093d70f6baf4fa3a703e7c28e680af684c581d424e6dca24040bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ93L2127625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3455ee1a00a43cea4eac1a5cb1771e4f3ea567931680cd44371d6b29f7c5a49. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZGLM2261124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08da7096fc9ab7260b5a6333aae7feff26e2b194e501538fbb503f894dd2de8. 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/QZNJY2155221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85e7d38870124880dac3c7c13d1aea956fac5e3e8416bb4b471e1d4b801c951. 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/QZTPX2299085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a6af80b51859e174bc71d37a7325d8a58307d1b29715477772a09e241a5d4d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZAKB2434348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9b35cb22c49cc64374e362d094a237422cca4897935e57ea27bed1ceb1ae4a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZAKB2434349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baaf856fd368f45b38e66a8d612a1a53573f7819108e93273d3796f5dafa29f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZAKB2434352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1093ec40f8e737016012a030f1ffcb2ac27a8b1d33fc536637c50f272a3c1f. 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/QZAKB2379555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08da7096fc9ab7260b5a6333aae7feff26e2b194e501538fbb503f894dd2de8. 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/QZNJY2155221.