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 0xff23e627c6eb08a3e539c84b96b0e6475761fdc999057c344a0f68a086eea7e2. 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/ffaced78-13cc-4f45-b612-242c9b1bd792.json and https://artists.proofprofile.net/proofs/artist/ffaced78-13cc-4f45-b612-242c9b1bd792.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 0x4db0d9b26d01d87427bfb0269db2141b8e8ae9f74fcb296bae067bc59d58aee2. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/PECR22401052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fc86c6ce694409d56ea0682a8474c45be8ae0dbee09f7cf4c4c8112d089c87. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/PECR22401054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac897c4a550ad4991837205c2df7b0a564147876813111b96fd3532da1b7db4. 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/PECR22401055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa39e2a1f0b933e3527d054ae448c5f8eed7e3a0c9c63ff0f875f97ac1d853. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:31Z), 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/PECR22401056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bb7bb83f4a90f4b8addc552f14effd45f6e1e6f481e1680eca1b6b3f697b89. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:22:51Z), 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/PECR22401058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22459883e55bbc31348ac24b9d83cd45a737611ec775a6247a5b04baca259de6. 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/PECR22401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce169554c7518aed32a6b8646d5f4d03a7728bec06b602ee257715be0d3487c7. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/PECR22401061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdae9330ef4c6566508c9f8b538254a44374b8c35ecb6679abfded61b0ae05d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PECR22401065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b019e8927565e1aef5711311f99228becd5efbd4604fd7926808ec41859b9a7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PECR22401067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eceedf40182269460aea7f981482a60e2d40c0b14672c51bf1a22e4c32342e6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PECR22401086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6948950bed3033241193d3a9252a5fc2557444379d79c0a7c2449a632eaf3654. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/PECR22401088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e48c187aa8be1b029b121cd7842630a608152db1e223d1f8a024e767ac3a7e4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PECR22401089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ef4bcf3c73420367f259becc07ce261561fef6828b3bced784ed6ef0158530. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/PECR22401091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e269ed1efb2fbf0ada84c9849640cbb34e0cd8a050cc9d03f9b6c0bb33add3d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:59:51Z), 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/PECR22401093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451c9b2851c42ef3c3191a8d41584129629f4f9bbe99ec16dc8c87a99366fa38. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/PECR22401094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ead23f2b2b5b922aec1d9c03cd57213dcd3583f701558bccbdc43acb59a62ee. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PECR22401095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd5e98d4b5ffb8ab24dbdd06ce3487732b1aafa641d02c2772c0f1b21cc28bf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PECR22401097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42467ef2cd06cfb253f16629f5ca0f4a39fde5ad13ae759cd0871555e057e21a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:12Z), 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/PECR22401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b8f103bec1c9d9809617edd46e3fb2fe89c97bf2389d5595b9fc4cfd701bc7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PECR22401076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860782a5837f819552592d27de1c94740cccdddb5a6f52bc40223bda80dd66a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:18Z), 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/PECR22401077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900bcaaf940b475a9a2973f740547f1cf0b59f00a56a7e519dd7406e15d37764. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PECR22401078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d1f083146b24923a53315a0eeac5eb43148739ae7515b8eccf282f6ac924fa. 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/PECR22401079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe42b235d52bc1d62dadef8e425e599c71b31d98c461b37f3f42a8456f5e555. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:12Z), 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/PECR22402148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c70e1818508ec9bc30c00e4578f29878480e2d4fa2569265f71c6331352354. 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/PECR22402149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0ffcd1f5957cc10e67f386d79f5a7f1d7fb0e744581845ef6dafc479bf7ddb. 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/PECR22501028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05758e237475e5642a35a7a81b59fad0925f20e2384b4e419b5c4eff87a6050e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PECR22501625.