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 0x77d45684e56506762b9dbbe80518cbcc0726697b66bdc6c0d3d8af3355e6c8bd. 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/1a75847a-e9bc-4d76-8f5a-9afdfc914148.json and https://artists.proofprofile.net/proofs/artist/1a75847a-e9bc-4d76-8f5a-9afdfc914148.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 0xd78e626260c82843ccc0307eafb95a13721db0cb99c25c4c785bc0ebbe75f007. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CA5KR1828629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1709a0326470f62dd3fd760da371665898285b4b44dfec7036f87edc55a792. 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/MXD782100778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b7025161d8607a70c43609dc8eb30d5f852770daed734b6424224e45f80d39. 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/CA5KR0017965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d43cfd9283ae6a3f3c46aeee8f18817343c44692ce7cd2064288a3816b68ac. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX872465945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a56effb20c00c57f362bec24f01f95cd7f9d485b8de048c57ff28123b68f30. 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/DGA062481516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d43cfd9283ae6a3f3c46aeee8f18817343c44692ce7cd2064288a3816b68ac. 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/FRX872465945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f26b6ba6ffbde064d0ba6d45d9e98abc1d7f2c64b0271258bf1c5498bdbf70a. 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/DGA062481518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032df725b5cebc34e90be132c9abda41917a7510775b35dafbc787cb2966165a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA062481522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f570e3e3d1eb2201550ac66f89d68457559eb2af2d4afab4e4f933717f67cb6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRX452460249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b216beb0fe25496b18a90ea9fa3206f97aa6298f710c06820628778e5b10efe. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DGA062481517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2505d32900b682ee2325a4f3b58ba603e8b4f11095d38429908adea956437bb5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DGA062481519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcc716bbd8700888d4161acb14a8fdc6c788c332ee6b133286ba3811fd4f13b. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DGA062481520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bab0df12fa633e93e982fec51f44dbf2a7c9695e03fdb5fbb7c0d272e01976. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DGA062481521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66728cbb661295f6d1e8190e787c7333cea9bce9dcbcb69c23002b8a21d1481a. 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/QZG2X2400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c682eea2c4b92edd1968db875014638e48081008f9d1c9942c5925d73ddc2a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX202591394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec732d90d3ed7f4cd2f786ee9208851890ee541aaed8524676bd18f7d3de92e2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NL3M12516187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564f104eae9ece8182db4aad206e1036b12d041e60600f8dd1b8e51e7653eb7a. 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/TCAIK2421134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62844ae8060a0612f6c8f9ef80ec25c325749236048bfe23b51ea5f6db36978a. 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/FRX452466518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49218f94f8e4da519e944e7d30539653125c209f15e78fe9513080f29a892ec6. 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/FRX452432079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdb3808f23a4f75b2586030bebfe8032da395714822a6bfbb74aa9639e0ad97. 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/QZTVM2323105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd539a541ffbf31ac4fcfe39fcbb505ecf729b0f23c8b09e9531571d2d7227c7a. 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/QZNJW2387585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129d5b60cbacdec6d756cbbc17cbbec2075344bb7f2d7fe8accc2d71fae251e7. 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/QZGLM2304356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f45e321afcf04688b5e7965649b15f5630e96e33f6098c48c0cf809c202085. 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/BK4DA2430708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ee7a15f94bdba2be7782b947ed81165f7fa3d2f2570ce9c5d9e47e83f532e7. 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/DGA062489440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650a98de83cd5255cf153d6902d5d68c263833d37f3a6d4bb2c4b1fd9dcd9dcf. 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/DGA0L2442448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32f0d2373626648f3cbc2d8cf52244c2d75dd35180a9f693b531a2da5f7d5db. 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/DGA0L2442449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c42c23a968d55a182b52eb7bc3695d472e38918959fc3a68ea4caf64874f40. 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/DGA0L2442450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca6bcdaddc10a201e12adafad4e508ad92ea059f13baab954727385664baa5f. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZTVM2393602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbce8de206936eee60fb642b32b21ee5089ea0f40b7a56d032baafcddc4e09a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DGA0L2442451.