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 0xd2839c2db1cf090a2b77002942373d85458919349e118e5c3976e1362b878884. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c62435c-3640-40ba-959d-b88547313bf1.json and https://artists.proofprofile.net/proofs/artist/2c62435c-3640-40ba-959d-b88547313bf1.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 0x850274818778621b7e71f68edbbd5606ab1c895b5ca43a37bdd3840c4c45ea2c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USL4Q1768075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03929cd61694d00df51baf7b18e2f8c8696ad3af2e768a562186fc5310dfbd6b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USL4Q1768065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327ff01fa6c87b5a067430365a345bb08e5980025a3a0506716247183f969707. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USL4Q1768067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a1cd935da986d484927766a069e4986d7adf42990cc8202a603c0a3019f33a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHR2303572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00b6c5fb7677de9e145c160252c20f1652d28d301ddb4bda56adb90d252b2e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4Q1888633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1829d7da694b9504f5004a02d24fa564182f18149cb3ff57972b288f35ecc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM81896047.
Spacetime and the Twilight (2024 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed6de90cc017e425e404ddecb86b18df7cdacdda1118e122ce0ad21597e2eb5. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USHM81896049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dd019f0c6feee1ee717c73d276da7be1614c9c84885ec89701c2ed19975e4a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USCGH1485565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d455ae5b3a3deb0b59cc1dc978649ac0f41bc1e07c621b1f97b2c48c527f81c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGH1485567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23328fa042fbb36eacbb9e7bd21aa5497937d0ca16be8caa793e5eb17016a1ee. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAFU2123182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828f7964f2f2e7c220c5ed940850e9ef4969327b9e83d1000a2679a7486cdb8a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAEJ1969860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e289392a5ad065ce2f6fade52dc439a066bff6b98232288a20c75138723cf8. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAGH2252565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09702ba454efe0f160aadf69024e5d8ae515e92f960ad46f5b4f13b5ae7d2c7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAGB2238478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbe0ed677a6c6792364aa997da43262a386ada97d2f4077e88219c8c830e028. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGH2252311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdad4b4b8562585edce6906e3db1f357634b5f25cec03f119c47869006971ab. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAGH2252330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c794c61fde867c569e7936a0d7cfab81a47d3679d23279707505d36f3413e91. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAFA2030099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e817b9d62947027689c75dd3878b843005b864f679b8bb4cdad6409083706b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAFN2191773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed80b1e2cff99ef499b307a5579ff5c43e270b020dad608af52415643f59aa9. 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/TCAGC2219686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac01ee90bcef823ca1035851b56e534ba6bbdb9a9ab2408f905e807dc12b2ffa. 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/TCAHQ2380685.