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 0xeb4ef7e85969498e10483fb6a10fd08f6888763af6924ef4133914eccc9d5644. 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/0dbd7e40-eaa8-49b7-b858-a99800ed9672.json and https://artists.proofprofile.net/proofs/artist/0dbd7e40-eaa8-49b7-b858-a99800ed9672.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 0x2de1b17efc56d86050a6ceb775ca6ee67334d39252a6467738ae663381b7b2a0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/UST8K1803223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543a96b394e44ad6018c7c2a0df83bd2ab4141a84dce3839f3e5ae7c4766fdb4. 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/QZLUV2000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaace52c670169dcf0ea6cadc623ef08d2a23b331311f2f5ecc9f3fa9064ec107. 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/QZLUV2000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ada509306409c95b6acc28826608b7f78f1106626a05a2ac69d643da3237d0b. 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/QZLUV2000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeac5ee743c258d7cb5983f2d003e68b64f730b307aae3a88463c1d58f686299. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZES52152654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530aeac452d490f4ae94d4ccbca5518cd80022b10e4df3d0ea97b7d0f9396f3b. 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/QZLUV2000235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d4b49aadfcd366aa2c20239944ac2bb187f582bd67f9b6b9268c0199437f10. 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/QZLUV2000244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe804c83e2ce5ce90b68a98acf4f1178eda18f511c3aa45f65f5ddb076a613767. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZLUV2000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa364a4a88b17e809d85e650b311099a8c8261433932cf66ec422f587f286504. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZLUV2300332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa770df0c02d027070ba6ded46548482d481f79ca1e1e374aa1c934be29f8812. 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/QZFZ72458561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadeddc42582ed3048b082817efbe99d52a470cbbdf4f7b5945897e15fcf2884. 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/QZFZ72459792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7619a694eb215899fca3f020c5d9972b151505cac6e5f99f43891a07b3f76798. 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/QZDA72416629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfc7614b487e87344a069da6fa9a91cd25c96c8036a74698a250b2d174c1c78. 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/QZMEM2417260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93eeda3bf7ad4d7d58d55f06379e64186dab076b4281bba9f2d34a2f1c18951c. 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/QZLUV2300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e7a95490733bd2fc5c609a5dac55d48a8c6576c61dd0f77c58c7710f3d09ed. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IL6652511862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadeddc42582ed3048b082817efbe99d52a470cbbdf4f7b5945897e15fcf2884. 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/QZFZ72459792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa770df0c02d027070ba6ded46548482d481f79ca1e1e374aa1c934be29f8812. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ72458561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfc7614b487e87344a069da6fa9a91cd25c96c8036a74698a250b2d174c1c78. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMEM2417260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363678fe218f0d0eb375ff83eeb0c45dcfd4aad699f2450bdf408676475f4f97. 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/QZK6N2524949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a7c752624f3f80050bb123a79cc63f51cc01bf121177697ecf9e1f6190be6d. 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/QZK6N2524950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7619a694eb215899fca3f020c5d9972b151505cac6e5f99f43891a07b3f76798. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDA72416629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcebb3fc7873d4294a193ba5d2b187876d57f09dddf70595df04137c50a0a48. 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/DENQ81500846.