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 0x615c8fe27628571e34678acc8e470ebe6a02ef6931c05bbebd19e6f2868dc414. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5279106-19e5-4c40-8b20-a5e3404f0a40.json and https://artists.proofprofile.net/proofs/artist/f5279106-19e5-4c40-8b20-a5e3404f0a40.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 0xb7a371ce5c6c60fba8db86f18d176d780d9a087766912e44e74ce15b48afc4bc. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:46:50Z), 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/CALVP2598217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f905656e5c3fc20ecbcbaa18068ab4c876f4351522139e89e50a981abeb39e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:07:05Z), 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/CALVP2598218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbb7a5516ce5a630543983f103a7a775dec2287486df62eb5acd5e0e50997d6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CALVP2598219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20953eaf80d437217ac806d821c66bc0e566bfc5a297043787f7c92f02633e0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:04Z), 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/CALVP2598220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a77fd6e1fae3243ee489216dd559c97a6f159500fda01fbd98c6001dca5fc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CALVP2598221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb28e4aa0395272ddd5fdbcbacc1a686fe001aea4b38ed35f6ba669aa420ccdb. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/CALVP2598222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d5cd5d0ee9096277eb9bdcc3edc23a31baf2184d4f42f35ea41e0d6ba9a711. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CALVP2598206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d917220ce8a42dc5f211eeab14b975ce57d27259d1ad47830a9f956f2139670. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CALVP2598207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60683774a46139d44289cc43960e524c90ed8ef927593a75f3b93b1af2323377. 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/CALVP2598208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abf1769ca365576acd0f41f736812b0f754aba5a888c3e51e52f761d285ec2e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CALVP2598209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ab0ea03106f9598577f99d724407319ad1a5b18f621efc5e07619ad50050d1. 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/CALVP2598210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af08296b7aaf7b39306a5afd5c70b8fe6f1656496dee12754941acf61e672a4. 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/CALVP2598211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aaf2795c053110c66ec7049c1cd5f73f8c77ab0b588dfb1325369b8fbf41bb. 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/CALVP2598212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72ea62bfc0895647f63e803ea7d7dd1bdbe54dad7db18925d95a70d60ac23b6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CALVP2598213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b295952874fed271f2110de15831c15e02ee53971ced3d593e3becb41c26d0. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/CALVP2598214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad7d3d442c309b63570aaf779454277118b50650a545da0251928ba0630ef0a. 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/CALVP2598215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ceaffe83be0e21f00e50194499e8ff6fc9731001d6e4f7410146f24f1c8f08. 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/CALVP2598216.