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 0xa340db00850dc75b2fbe103f3eb80a0b22c404b9daaf12dfb92eeb414da327a0. 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/98bd39a6-4b94-4c09-a9b2-fdd82cde5bd0.json and https://artists.proofprofile.net/proofs/artist/98bd39a6-4b94-4c09-a9b2-fdd82cde5bd0.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 0x97f4c54857ac9542ce2159a8cd0f0ad3e802df0804b1be7d43f5e4836016263f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZMWW2296950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0bd559948c1add79146f587709d73970b86cc1dcb378e2abebc5879fdd145e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZNB82233246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342a8caffb71250cb4e2ed53707f3eaedf082de12ab5a6f4ab5e68e79af8914e. 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/TCAGN2287670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe883677a0a9aed553db8f57534f44af1547646e9f3e345accfbda6daae51fb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNMX2286767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bd5dc81c0d3d66157df4f88668fc0decb91ff7d9fc330a39c0795b48ae3c6d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZNMY2272069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f8c36bc0f581e62bac8730c3b7d6f1848af1e6ca0e77145832c39f81d18af1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZL382347827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2570bee6fb4fb2aa692f161512c4e16c11f01f8e2f484ed486097f8931c05e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:13Z), 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/USLD91747797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d375b7cb4c6a1018ef83132aaf497b11abd308841cb90c231cf2f49d059427. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:18:11Z), 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/USLD91748635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc1b7ab4fc63d1ee46f5cfb52b075c47364917e93605de5801bcf348e4ea1c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USLD91751380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9e08934402200d95895fa16f9320ffc8703a15efb99ad800ebe584032ac20c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USLD91751577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb874503d8d04ee052d20c0588eed76d51fc8a96f84d914b94911135f90e92d37. 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/USLD91751581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7054701181757c5c751fe8bea6b862c19246818fc922f6aba3db619027767067. 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/USLD91751583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec36c017ad2e2a653450c47a64d810920b7c3ae51073e12986b9051cd1264aa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USLD91751585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48d73d7767702b6a630af846bc32b09c7d78ff172380b52b41bf474e1774ab0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USLD91753033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89234542b343cd86f71bb6db659e05f8cbc003b5f4588c39c1d14f3a399ccc1. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:02Z), 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/USLD91753788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b3308394561700be224e47aca5fe9eff3ee385648ff49a4cf416015784ec03. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USLD91754796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efb1ee99203d3f1b40f51214ebb5e14ec474fb0f7f9be694afe9c2ee9c1791d. 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/USLD91754804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71065db8069b013606251cb8adc46d3ce83925c51dafc4b2ff9c180fbc2b3d86. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:54Z), 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/USLD91754805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e46f67b5ad1760430744adcfc0dd30c84041e76d6302641d61f2adad329648d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USLD91754806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adda899fdfa8542ca27ca68291a1a2725c6e319142785a298d3ded9fe479e08. 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/USLD91754807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf105937cbc1045c1c26c25bdde97c4f2a0e468be553267820b87b4b4ee8aab6a. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:38Z), 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/USLD91756230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ad602339cb8a04c7bd3f9118cae27af8dee7235563dd5b5156258f03c4810. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USLD91756868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982803a7d1ca20ce76b2a997a073932cf7be5b5cf1ab4a3a0231934436de97c2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USLD91759827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039f5443fab41efac7779634f61d01207e9f3b2a697662cb4ae3339be5e2ad8f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USLD91761775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a622c8e242a99599f00070773fb5fe8ac14bebff4aef00277d7869c88e7f41e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USLD91761777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1122f8abeccf35cd5e1f927a001d3577996e068b4d7f22274aa2442c04a67d2. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USLD91761781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cef5d13375b85c22587eb0653aec5d24bfcd402ab9ef2b88b8063effb2e7260. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USLD91761783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccbf5cbf24bf57f975386c0a2c9174ab750b56a393ff662047eeb60bc796d36. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USLD91761784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822e1e0f6b06e93c3a79b822a112a8a7ed7ea2303e7422fa5adaad1517dbbf23. 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/USLD91761785.