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 0x3e53f34dc314faf755b07113562c9ecd78dfe93bbac6a188538794f8839cf16f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5697ed7-fe3b-49dd-807e-0e162ef5c43a.json and https://artists.proofprofile.net/proofs/artist/f5697ed7-fe3b-49dd-807e-0e162ef5c43a.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 0x679cff8eef8ed4bfdbb5539be6ab0d2c38557ff31e60ddd658d2752355f571f0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ5FN1995459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754482834ce095948932081f9667db8b203ec52f9d3d47067f742d43669ef905. 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/GB2LD2110181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420c6d63772a39d7c2898b6b7a0aefc614e0c27b162e0c970266fc97e7ca9bdd. 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/NLCK41062573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216cd20c5ddad1894d3d71f0b854f083e4bd3f8b977dff7b12476c24f7cb16dd. 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/NLCK41087667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ae2dbfa0eb7a322a56cb9443c492ac92567ede2e43cb9f4afa4ddd69bb1abd. 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/NLCK41066896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430548b3949d3e469f8ee40889859cf2a09aea826f30d608e421a2bf635b5bb4. 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/NLCK41087668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22806eb84beddeb876d646a83480d36086eafb54b4ea491a4636211b80a2295. 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/NLCK41078919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d7def419dd7b20f2c355f3d49da1aeb4c0b37522f9cb5dfd93b74f184739bb. 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/NLCK41087669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba097c77860330ac6d562a9652a9ac2a96329bd58013e796e7964e9a146e8023. 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/NLCK41084460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca96378235f44579a0b9a6596bd78f2288d6ccddfdf4785642581f14ef2cf65. 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/NLCK41091099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf947536f01a7481bb546b4243e3ca85abdc4987f607e864d557f2555fc6083. 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/NLCK41090429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a26e0dc1747e839c8a3946b3904901dfa2ce69bf338710935aa38e6e4c63ec6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK41084010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7798643fe1ce4ac7ac19ddb8fa4e41cc7edb51071acd218efbaf43f19c9cfa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK41082391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d7def419dd7b20f2c355f3d49da1aeb4c0b37522f9cb5dfd93b74f184739bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK41087669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134c69470aee8f7c6cd955b4744e82ca1d6e72ee1cd9fc4f1daf6eeef55571f6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41085924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4daff8e080a600051df95b1893d6dfde1da5b28071da87e36453a52026deb9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK41087071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea46b0ac3056db8f44fa5eeebecb5e471fee5c82e2b9f46cd50f6cf22aabfbb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41087580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958d77d249411fe42472d76d25f53a4634328f94d79b63ded13cb337e0da513e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK41085711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff45e49b00db8aef654e34c7296643168a512ada8c95690a8af69991a0865f1. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:51:37Z), 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/NLBW52000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea4aaa488f035635d313ce624c3bfce0557a1205ea8e94ea5d0e673ca8de4f9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKPL1967576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fb98cdc04ca1f85f444b23161429b9f0c3737ef72e6d789ba210921dab2bc3. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QM24S1802668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1495617753025747f083d53e3baca9c10d8d7988b262d6a890ea767b16de4b4e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMREU2014001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d6e81924090deaff2e975686670a4d5050025d1c67f0d52c9cca39f6c8138. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMREU2014002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d0f53eadd3eee00eda15f6666cbbac661e75fa2504a74faa30c847a06d22d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMREU2014005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba47f9126617653b23873d054c55d4d05bcb3ca0a5d3f78ceef1969dc8c4d0bf. 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/QMREU2014007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aff0201aa4b2b4417cae8e673af1041a4917adbd5ee2a95414383b207535a17. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMREU2014008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc3b48a2c203013ef2a70bc55995953a9a3766162c8e9787da2bfe2169fcbf2. 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/QMREU2014011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391ee2ca58fcbc6f1b979d3b301d379ac2866b6ac1f9e4b2f3f48cb989efde07. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2033510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458454770ba7c117542f6c5616cf85a7c86dc71f4a5935f090f126e9424d7269. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2033501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d464a23a8fbbee812e9f6aac1c3e04d9b9f8df123912ceab8dd2e5a2f0e742. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2033525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0564e2fbc8079a6d1cf2424bf29713a223d90b56103097dfccc25a96d520eb1. 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/QM42K1937468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24fd578e88d5505de61906abf81305533104e8a292241b1fe38d12dc8d22a46. 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/QM42K1972829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a72254e302aaef898a44b24dbb5da997baeeef1155adc155de8edc53ac6886c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM42K1992602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4348ec31878e598c1a4fb86965d8b6aacb86e830f0488b771b128020f368cf6. 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/QM42K1903710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94424adb28c8cb76af0ca0cea753e27c81eedf50c58a7af44c7e6592bd398c86. 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/QM42K1901838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb652968bb5990686a0e72f81d7486144b65d083ff0a4bf77b8203819bb074ac1. 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/QM42K1921979.