1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xfd29d0abd0c3f4d7818a41c8616769aa0defefd35a2218eb9ff71b653f9feb88. 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/545bef28-1e75-4fc4-91d6-5f3cc950106a.json and https://artists.proofprofile.net/proofs/artist/545bef28-1e75-4fc4-91d6-5f3cc950106a.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 → block OTSBitcoinBlock must exist at that height 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 0x8241ea45e0b29701186a0d0817f16a2d3ae42e1d85e4beb7becaa68d4b66924b. 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/UKMGU1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe170691feaaec1845eed8083a87bccd0d0ed8f26e0173e4892233eb3b307f747. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/UKMGU1700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9f83de4b260af97a447f3463b76f1c7d5c0f63856abdc13d91470028760215. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/UKMGU1700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0286ead70b0fe9e57bc37a979d9d7141daaec15272b60856430ca5dbf1c2e4e1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:53:10Z), 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/GBMJG1818262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072f24f3f60821b1277b2955017a375b4144252550eb12c35bbfa95834d03e9e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMJG1818263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a31993c69193eb24298bb8738df3870d970d8c355f4814143617edc22803f3. 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/GBMJG1904200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e464919beff379a69aada3fac7c9c3436db95d9f28b850ad85bb6c36e44f38. 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/UKMGU2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0878da8ebeea6f706dee231bcc305f0de5b1c6145b3c1a211146e1c226f463. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/UKMGU2000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd35ba75dd2912d5be93e2477dfc7f985c1f50bc7456987f7aa20db08dbefd12. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKMGU2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fda85078718f51c7a8dd1b2372f82e66668bb27e1e5d278d448d6d244821711. 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/UKMGU2000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36705982b15f2ab3a089e4055f713912c86618fd17796b2d40a51362310e4690. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBMJG2111393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3d3dfc2d6fa561fbec1678ee4753c62a4d505a4ac519d7154aa7cc120bdcb8. 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/GBMJG2111394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d5064b145135d7b8b7d35d211d293be22bbbcf045d6d184ed175e338bfb7c2. 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/GBMJG2111395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afa40f3f04f24bd42223ae8d81098a21166db2533abc83f658f8e2caa0b5e35. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:19:07Z), 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/UKMGU2300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a350006d2ef0d822e44d258575cbb1aad9aca781c3594d9b4ef0ff11b9dd4b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKMGU2300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b13fbfd5a7a8db23bddf92b50c4f192f648dbcdd942d82d87a1b12afa860d58. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UKMGU2300309.