frame|right|Artist's conception of a white dwarf, right, accreting hydrogen from the Roche lobe of its larger companion star A nova is a transient astronomical event that causes the sudden appearance
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 0xe0616db649726a6c9e45d47cbe9b5f331a9ff61fa0d00ca5e898a80a456a3984. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9341e23-8aef-4a17-85c2-3dd725c2b05f.json and https://artists.proofprofile.net/proofs/artist/c9341e23-8aef-4a17-85c2-3dd725c2b05f.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 0xbc00243371b4736590556bcc6ae0d72e5f2a79cc5e3c1964c258dd8310f2615c. 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/GX53U2469674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244aea77256d8f08e53d922d84dafe02f4e80fe8d6c23364d38bc2cf19a573cf. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX53U2464856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce054972a7bd90210356fae4aefa9e52d5a75b225fcc07fb8fd33603d08f5d3d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GX53U2464857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a74bd59d865f67f1d0dc38bbaf64b6bfc662408a958ed867156f18d522dea80. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GX53U2464858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3999307c0daeab688663d4bd96e131679d09164158567103185d9df9dad347. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX53U2469824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe736d92ca3508b38b68af3701e131def88f39d5c2b183087ae95a5a362bcc60e. 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/GX53U2469825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f6b175668b7470d27241ad7ae2a58a094433dc6c6360dee6e4322bfffd7b1b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:55Z), 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/GX53U2469826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00623430a986754f4abb6fdd08d878bf1315a3440d71c44ea364711d4aa1e76. 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/GX53U2469827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c58ce98114c84fcc779028effb352470dc49431b63827d7658690a9977929e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GX53U2469828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9814b9a4c95df6dab19d6292735a7fad0def37af73c5f54940a873acb350369e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GX53U2469849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e75937f9880439c974231919bd5d393534d6726db5c7d40bff61092c9b783a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GX53U2469850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017f2658dcd9434a34a8a181b124b104ce0ffadbf8c8bd780c355ab8185f0bc8. 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/GX53U2469851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc482971dd2f06fe4ac394c2b657bb9b084d3300ef83bb1b193085d4e2ad5c511. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/GX53U2469852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f702ecb30e490b2b7db73965a83daec9fdcc3b8b2d91a76969087da12015609. 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/GX53U2469853.