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 0x7908972b42609f6f09debf4fa2155957e0bf3b97837bd1a67b1fc09952205350. 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/d966a16e-2825-4af7-a876-b535088e1fff.json and https://artists.proofprofile.net/proofs/artist/d966a16e-2825-4af7-a876-b535088e1fff.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 0x805b706886dce9d420f98ae7478491033a2593e483291923e02fede0f3a48546. 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/QZDA62317493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c240d940a9a470af385294d663c2e1ec1d7cf63d9fe9c7f7eec51774ecfe94. 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/QZDA62317496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5d9249deca4d612e6211f5ae2c147dd7b5c1d28adc0b50dd5346ded2b495f7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZDA62317499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0723fff07429deae547d78c34e63f3d68f9ec4c8e50866932bd102849cb50ce1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA62317505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3273bcecf869dde3538b693c06a26d90433ebefa892cd93d897c6c3e5ba0b370. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZES92322807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02efb2c244f499743eb8312025f628f6ffd4a416f5648258132b322b22ba48b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES92322808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6279be10566e549ea0cdd04649d1f73c2471f4816345c36ff695001eb5c2f6. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZES92322809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576bc04194624cac34c744b78a64546ef6d980c46d0c888554bd99f77ce2815b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:04Z), 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/QZES92322811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec2140f0ae1d55ef29b20740bffa8833f9fb62b8e47ae93f9337b2007ad533e. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:03:01Z), 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/QZES92322812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff73e0d3e8522e46d1190defd70736b7a34afbf69d0f6e68adb52c5281cfd33d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZES92322813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacac0576bd62897e0c7bbf38ce549c2c97cd9a251ef76a03e236c54be5d27bb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:45Z), 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/QZES92322815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628ac3d688eaa85090a452ab5e9e59c28829e0621049e975b08880c2ae651f1d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZES92322817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118aa9cb616d30abcc4de8e8ef169ed80e23962f3fb95a69dff3f897715a1dc4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/NL8RL2505138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc249d897a2f36e61b234a0948791ec31f3c11f4fcc600e89b10f305c4389072. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL8RL2505139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17dca811e92c65a852b7ece9f0ed30f6562760428df65a09625c76c6802ae1e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/NL8RL2505140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c969004bf3227a1c30af7c6789d409a74fe6a0fe63c29cb1310f7c3cbc983. 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/NL8RL2505142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d2778fe0cbc06458a3ac72851c57954de163c47e596b4cd96c4941c6212915. 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/NL8RL2505145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f9750004b1dd70c69be1a2bb72825fe226a180be3fe2e2905c7ffea63b46f3. 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/NL8RL2505147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd3ecdcf564c8e7b5d4543f498612714439efe4b0972ccbcf505f2932f694bd. 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/NL8RL2562799.