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 0x529b442bf422270fa94ad82b430442d55c2fce036192505584ec0b681d103194. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c59f4b0-1437-48ae-b00c-ca1004149c38.json and https://artists.proofprofile.net/proofs/artist/8c59f4b0-1437-48ae-b00c-ca1004149c38.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 0x21df690159d46acb8b471cd5a523a1558e564f88f0b686c34acd89e7498017e3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARQIW2406018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e3f9816001d99ecfb8509abc12cb8e4425643f4762dae4ad86e3b8d68cac5. 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/SE5IB1600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab7e71a4933cebc9c8a67e86fa6f8323defbacd750fa6aa201305b46ca1ef8. 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/SE5IB1600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4f2ca73a7e65fcf7ddde94ba794dc6a7c13db1287a7e38374f7e970cc01f8. 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/SE5IB1600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf082494d70043ce2c341f89872f78b2888ea7d0ebfeda93dd4151237353fbe1. 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/SE5IB1600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f23b52c7f66c8829f756c389ee29ea4d1bbfe1d347ea7f7ab98896b40cd59. 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/SE5IB1600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab7e71a4933cebc9c8a67e86fa6f8323defbacd750fa6aa201305b46ca1ef8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE5IB1600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf082494d70043ce2c341f89872f78b2888ea7d0ebfeda93dd4151237353fbe1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB1600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e3f9816001d99ecfb8509abc12cb8e4425643f4762dae4ad86e3b8d68cac5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB1600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab7e71a4933cebc9c8a67e86fa6f8323defbacd750fa6aa201305b46ca1ef8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE5IB1600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f23b52c7f66c8829f756c389ee29ea4d1bbfe1d347ea7f7ab98896b40cd59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE5IB1600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4f2ca73a7e65fcf7ddde94ba794dc6a7c13db1287a7e38374f7e970cc01f8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE5IB1600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf082494d70043ce2c341f89872f78b2888ea7d0ebfeda93dd4151237353fbe1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5IB1600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab7e71a4933cebc9c8a67e86fa6f8323defbacd750fa6aa201305b46ca1ef8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5IB1600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab7e71a4933cebc9c8a67e86fa6f8323defbacd750fa6aa201305b46ca1ef8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB1600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e3f9816001d99ecfb8509abc12cb8e4425643f4762dae4ad86e3b8d68cac5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB1600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f23b52c7f66c8829f756c389ee29ea4d1bbfe1d347ea7f7ab98896b40cd59. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE5IB1600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f23b52c7f66c8829f756c389ee29ea4d1bbfe1d347ea7f7ab98896b40cd59. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB1600304.