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 0x31003023c6871bc8da248f487c4f9c4082b5696c90284922bdb19dc0cc87b9e1. 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/5a148d86-21cd-4d0d-ad3c-180a0ac8f24d.json and https://artists.proofprofile.net/proofs/artist/5a148d86-21cd-4d0d-ad3c-180a0ac8f24d.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 0xd10f92c2ee8ad3aea1bbc273caf21733da3087353eb1a94fc6ef6ee1d2f95112. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:22Z), 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/GBSMU4454901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b18afb8ae5493f592be9a6e74dfa0df500e9b54da1f8cb168d5699cc428d9f. 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/GBSMU4454903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd560c63e2e985919c0f87f57e58781e26fee4662267cf0a9f1ff3960ced35584. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:25:14Z), 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/GBSMU4499356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233ae58e071757942ad6c202ce87a3562cb9171869e26d231f4d71e942bb0c5f. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/GBSMU4499358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a4ff0e0df86f37fb092c2e3ddd0db80efc525f17a3c9dff87545556b69145d. 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/GBSMU4499361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8313649e4c1d5b27c1bf845c1649b03d3633aa4ecad5ea2198b1a01f04a8e7. 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/GBSMU4499362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03d8f8583150ffce868f7c58c2d023b0958aef4360667b19be4b05bfe1a97bf. 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/GBSMU4499363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc891a052f1a9ce6975ca2bc4cb908a38517a561eb084957afd5fd7c2cde24576. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBSMU4499364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c458aa9c4e5da1bd6e8d7c691b97e5fced87f256f4e48753c62a7af895c783. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU4499603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3578edd109099c8a499ea32d491b984dc8a29d495917343e78690ce7beb58282. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GBSMU4499593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657a501364d5149affdf4ff6bf3212f9d250e2e8914445da1af4681fb9b3f6a1. 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/GBSMU4499594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e6743c295a4f652642ef29344df66e8846467f8d50c9a444bb61a1de0a7004. 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/GBSMU4499596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99799cb24595947f3f29d18ee4db97926f12eb4856fb7755419a5e3f915ebef2. 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/GBSMU4499597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ba059be1768b50f899e446094f27cfa636bbb38794425fb00e79bb5dc12327. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBSMU4499599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12d8b21f1e22fc16e14653e02c33cf43bd789210d2e8b49ce43305799237992. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBSMU4499600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465bcc5a3469e1a629e2be049a32e7158cb155379fc3777598393979110a945f. 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/GBSMU4499601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9366e43c10850881ea9e6160026d8aa44b8075f7a414db183b4b7d6126112702. 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/GBSMU4499553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ab8928ae637caf8863fb87981cfdc9efc12978f73751bd1723afbd29037969. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/GBSMU4499552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51931b37289c55cbef07e05cde165a5ad86f34e49f258ff43ea4b6bb1215e5f. 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/GBSMU4499554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1715b84c9f1c9ae615f2fbfe85e3d48bbdc9db2b4eeac0414a4fc98d6b121b38. 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/GBSMU4499555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b03b6589b26a1c49f9c0f74196620fa42171ba923966dcf8680a6fb2cb87671. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBSMU4499650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae3547c787d423387bea92b56fc2c2c2148a67b1c1b60040e041ede920e76d3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:18Z), 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/GBSMU4499651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb2a6765846e044a3d5c7c2d0d1be493981636ca37d28ff78cf332f5cd0a5b3. 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/GBSMU8537070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19ffd4e159a203af2bc78619a19046b1cee708bef5840b283dc9c690ccc7f97. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBSMU8537071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774a7b716b6a4d80b96d04c471a88fcc32543b86c49f9e10456ee5dfb3ca5b52. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBSMU8537073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1991aec3433cefc8d5d4d9c4fce55558ec7b429ccf4165fb75d9799ede18cad8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBSMU8537075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025a856d10975c72af15055c09ce1fc9e595ead1ff49818ae7810469b4817707. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBSMU8537076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb8541fe296857d6e5de9a78db31a52d5022e70c33c5f4c9287a1ceada0d29e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBSMU8537078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe945f412087b2689ec1d9ff6e486958c17f28295b4dd88939676f6541b3277fc. 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/GX38U2146017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01159126cd4fd6113d7469425e446c30faae70e04f099a87df8996274eb9ff3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:33Z), 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/GX38U2146021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb3ab4ee986ef782ac0bba4395b1acc2006e14ae378521a66ae6e0ff1834f1d. 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/GX38U2146023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e3a1de858660047fa0c28820268a6844077c007758026b29c3e1383c2d89af. 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/GX38U2146024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc207b66dd161e5984e65965ae1fa9d308badb562e4968de2423c87d89968b234. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:55:25Z), 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/GX38U2294128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9aa187e9ebf1251f4d1520483ef4ef3d535ebcb6b116f84293cd8bb5d9c11b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX38U2294129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9919a2d89acd43dad4932f7a84c9d4e9c892237e7ff11e377a2c67f65ffeda33. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/GX8LD2386521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eaba2fb8c41fa809fe411102e1a4b64ab753ac0e8eee1c68b1593a2af9f735. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX8LD2427705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c2b31e31f19f4e456eef3a562e63b9b743f05e9ec6a4be453bdd5b694c3902. 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/GX8LD2463450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe496b45d15cfe91d4c79ced2b20d3f4dee7f7e16cbf3cf078028b4eb7990bfc4. 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/GX8LD2452342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c4b5cca694cba210a933e24d0e1eabdcc77219edee3cd3b7ab5fcab49f95a3. 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/GX8LD2445454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b10750bb232dfb1678491edc2c78adc305ae7c940d7df9b06088183ce52c426. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:56Z), 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/GX8LD2419306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468bc4e6be9b25f004c1330419910745e882fec2b467b85e857d4d0946d275ff. 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/GX8LD2403261.