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 0x8cb1b95833839a020c6010c70498306b8b9073d01c1e71a6aaf5529ec82c5e93. 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/9d371c53-5417-4d75-8826-4bb5203c3a01.json and https://artists.proofprofile.net/proofs/artist/9d371c53-5417-4d75-8826-4bb5203c3a01.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 0x22849ca8d640f1eba5aa687bc4813ad41da5b894a4919214a3530377df82e678. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:20:07Z), 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/RUA1D2173476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb644adb8de4b05421a5f7650c71a4c4e5c761a4fa88956f74c8a0661c72d64. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUA1D2205322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cb1cf495ef90d960773b877ac9acdc82d4ba0da5e435733333f59b16a2a3ac. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/RUA1D2205325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1bdc699d8baa7922be614816001992b4d62b8e181bbd3fb66d3951a5711496. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUA1D2249154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a7c3b8c730799686299ad8dcb26083d545ccd20476d24363b12fba19f158fd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUA1D2284572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c59215bf76ec68e5e69e0d013cbe59c3c08669fefebb04dd6b8461a5189201. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/RUA1D2299110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc1f50853879973534feeff1d33aadb2a561ee4c9ac1d347cfea66dbab2d37. 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/RUAGT2209610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7b3b31f7166ef11d5a5680a843df3ae4c90fc980058aa8fa122a0daccb505a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/RUA1D2313659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398fa80697560b130594655d6a4c439b517a432557727fda481a3a12a9c1806b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUA1D2341410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf402b87fcd304eb4683f57a6c2873519c0e078abb2a0aa165e4607306004718d. 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/RUA1D2359751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285c1d9020979e0ebfce2efb0327fefb58b2b2cd4917902721c1ef0c4f9e7b69. 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/RUA1D2359753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb78f7aacd97c0786647f9b7a8004a63653f58e0f64e4586d055b4e63d2895. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/RUA1D2359755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3453f9ac107f963190600edcbe08976519805bd7f67c2959a8d7021ca5323e9d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:37Z), 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/RUA1D2359757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f500cb488c99daa252f987789bf539ee43e9453e00e85f258203752944d2427. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA1D2359759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f62052b5de2b12a151df451fa832b6bb1c6fd6f915b200db1c86fbb8ccbc15. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:58:52Z), 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/RUA1D2359763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7befc3a464f23cc57f551a484cd77fa86c249688fb54ab472adf2d3de9b3b413. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/RUA1D2359764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7fd67a4b08ddf777a9cedbccfb71d2aafda372c2e4911b0148d6873074720a. 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/RUA1D2355716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bcdbbfc0eb567e49d081351341deb7673673b7b0b75a9c3ed0a95df3602c99. 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/RUAGT2360976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026287168961b5e78e2532b7348917ebd6acfdb88f9a8dd522e7db775e5f56b6. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:27:46Z), 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/RUA1D2412047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17843b448bbeaf6aea44d1d2a1117da1aa14698a6e492f79882885de506a81d6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUA1D2434127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ff45f361da20dbddd47c4f04fb9c6bdcec3bc60ef7add486dbf46f9ed221df. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUAGT2536436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7611583718f752af9f65ae4a6dcb15bcbefe3f4d21e791f71dadd1e5db1d266. 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/RUAGT2566942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0503e43919f7d567ab887fd1a0bba13f6631a00acfbc6156b615c570e7afbf8f. 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/RUAGT2566944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e68296b4fcfbfe1d8c09d56b595ff61cf3916d7684d9d5a1a7e11c2962991d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUAGT2551777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f3fdb661bb6d7485a4e798b9e6c464eb0c74f4a52c9821c785b59615c8c64d. 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/RUAGT2566947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4067b1ccd237482b7904dc6873f367f42a5a634800f9fc43f0aa4f1a5f9027a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUAGT2566949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b06dc12607c4f83475fc38216d2ccf56735dc476ea5bc48656cf00a4161b21. 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/RUAGT2566951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42d214a9cdd5d10fa0eda8eaf0c3e943255eceba2daf51a37bdc4e9833abe00. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUAGT2566953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834e202a2f1cf8a92e3010f6bee1a3e26ce17750e50c0a4b92f90e3e123c014b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUAGT2566955.