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 0xb0f36cf88bca05b604c08c44ab32409a9faf11ac3ec516d549d71ba3fff34729. 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/798ee260-fe13-4794-aa0a-46cb7c8816d4.json and https://artists.proofprofile.net/proofs/artist/798ee260-fe13-4794-aa0a-46cb7c8816d4.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 0x1838c98a6f6c8f7ed6710a3d5e7909e5f9e6d05140db8367517cb544c9c4fe49. 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/HKG732349724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23efaa5e1ffd7091ddfdd7ec4587935fe683f39335250fb66fc70204a6b9daf. 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/HKG732349725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f5ca27889c2ba14abe1ad1197fd861ffe961162f43d8b172be59484a1757bc. 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/HKG731682101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1737c8075e95e6bee4e8426ed94a2f1371849f675116f7a25ce8adc56398ed0c. 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/HKG731682102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac41c2095072942853d6d5a5261daa5b897412bc352f508bfadbb355a31efce6. 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/HKG731682108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19040c920a7cf9144a6e6f998712e739c05023a40b647967303f7605d2b18e1b. 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/HKG731682106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cefe696f4719060d28e56d084e7af66a1354b7cdfde31d1b1b757fdf889374. 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/HKG731682103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58c4740d9c6a6c6cb176b0c8b9096524d9d16a7188da59b4967b39a54326fe8. 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/HKG731682107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33bc5b7eac52060739e7d54918a1072dd07286eec59e1182d471f7a59f0e0ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG731682104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef8ed121f445f2cfdc8b87add1df3dab949a01659769e9e7890989e2acd5985. 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/HKG732445609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4265b6ab48e6d82d597c15558fe4f68a8bf8a0b399da921efd74ac06e381f6f7. 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/HKG732445611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcdf468bc9a5689e3974dc10ce4b39014e794131afbc5bbe2430c3ab36ca2aa. 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/CNZ682300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5859278d2541d5a3a19ed3a083147ce5fee7359bdf6adca08a8745e0e86dfcb4. 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/CNZ682300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea42f16b427063862f6949f4af462a7ab048c41aa1e51f27630ca1cb1f767da0. 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/HKG732467448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0c2dbf186969a9eda2dbdea020b367e7dd0747a5977060db3360fe5a7daf46. 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/QZJPM2482125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe547802fbd7ddeb7114636d8c2b44d306c7847301369466d8603f75d8ac38268. 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/QZJPM2482129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6685f5ecb165fe2c678ce3e5ff6d6a74e524a499ee907c870261314ebff816. 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/QZJPM2482137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfdfafd1bee47256ab72a7320c7f122edff4d10f1a19463893a612cea20459d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZJPM2482140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd869187da806d4c039d51fce0d9c48231c3faa9be57feb78f73a1fa087d178cf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZJPM2482281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c06b84faee0c09bf56964c8b7641975efa3d0af526efb3d994b313a0ec3138d. 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/QZJPM2482296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2378ff4466f0782ebd1d4ad8c841c2c96d000dde335afa3841350dbaf6bca486. 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/QZJPM2482324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e407bc8f33bf7d4cbefd0cfb68edb170bf8098b171f566db5727775b045abe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZJPM2482366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ca920751a9617e9e2a1972165a9371a483aa9cc501c432123a1bf33d87a697. 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/QZJPM2482423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb2144ea42a97d6a521fe2841c7973b553c07ee823ca9ed3da6da42db6a0158. 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/QZJPM2482514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac108061bdc5ccf9d7d6b038459235747ea1945cccb4084993d59d472ca6a26. 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/CNUM72400495.