1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x860be37112684d1ee723b4f66d14028ffd6ef1f337c6ee4a69b1cc5efc8ab25a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ce2e6a8-93be-4ecc-9b56-45d0dc3ab0fb.json and https://artists.proofprofile.net/proofs/artist/8ce2e6a8-93be-4ecc-9b56-45d0dc3ab0fb.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 → block OTSBitcoinBlock must exist at that height 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 0xa5ddb4638ac54475b80f9f69ae649fc9ae6cd5a618d527bb66a0244e3e37c7a7. 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/QZNWU2363260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49e8db8cac12e21d8fbffa8372d2b6b5e8cb6d29270c900a53e7fc866964cec. 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/QZNWU2363263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef264eb4fe3d6cae301a6b8d81500ae4561fdbdc29d615dfe99cb9ffbf39b788. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:16Z), 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/QZNWU2363267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69eee90eacc59928599994a8f2eef415a5545ea9b0f177de5613156720d8695c. 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/QZNWU2363268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acc13c4ea5bd6ace630357e3b6fb5fc2e062a30a2033b62cd73fb4d233434b3. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZNWV2368897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5d4c10257f8e8af377137817747e968b75f7c59b6eb92e31ce80bb3f89f840. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZNWV2366631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa30fb0da5b30ff3cf76fadd7090090cb6433196bf9fa62dc1a14ca24a6587b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNWV2368917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcabb1c679a68aab77b692e5b65feff6caf612e40a3e900b2da04334de54d11. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZNWW2368871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7307dce9af5941b864086d681c8fc8e912a5163ccc95829ac74c2adb009fce69. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZNWY2379870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3b18f6aef7316fcdb15325fd56dd93d6496c62626357e8d11250d77a523c16. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:11Z), 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/QZNWY2379874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b050f3e5dea5a532beaf63e2c1ba4d0c2bde2bdfbd9a201bf133ab52d15372. 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/QZNWY2379876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae2ba1255fb9554f2f810e10eae3352ac4b0fce390cd05fe72d65654555381a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNWY2379879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582c2a70c1df27374ae9f2838ea5052946d13dec38e7cffa47742b728acedf74. 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/QZNWZ2382817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95bd2b8ad34a091669319b1f14219bfb296ae48c4394c28ad166ef987ce82d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNWZ2382821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04468efa47ffa14b2bc3b12dbf533b903fc9dcab17edfb6e634a70d9196d02d6. 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/QZNWZ2382823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfaa5fb6cea7d9b0c7f6a634a3da6b7181f925d540967e217440b7e3f145d60. 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/QZPLR2334579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3197ae1319685130c585b8ba5502af930e9cc80631fbfa414a26ec45388cf0. 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/QZPLR2334586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006975c89e77e553931a93340af4f6f9fad0939778d4ca76d1b7b7799066c9f7. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:16:50Z), 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/QZPLR2317156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38893b2179675d005792c24cc55aa1daa926e5b7609c7b22d2d48229b3a8b792. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZPLR2317159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f782958e5a5baba9f763dda667a4512c3ba533c3d4cfab347f0a89830eda8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZPLR2367740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2365ea6b127e41bb3029bfe0ffc041c0901eee14cba3675c3c9bada57b97448. 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/QZPLR2367746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fad336140104fd89b1036b6280d2e20b39738bca351d0bf6ef554351460c08. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZPLR2367748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47cd64da9ecd76198c6fb590349b5e2a78ef803781c82655f7a5ce6e8e9a023. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZTAU2314212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df1d3c51c6b12995521de1b7a28014c74c18e6863e749ce983a38a2bf95c15b. 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/QZTAU2314213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cab181fa597ccb19a9a5b2f97b75b68cba456b4be8d0852daebe234364d0fb5. 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/QZTAU2314215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d799a2142d4d9e5bb3dd5d1dc2e9d13e5acd126bf30b94a4c332a99daa6ef92. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:51:48Z), 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/QZTAU2314216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5c794b55e2d143b907947387bba2d60f53cf3bb939cd5d0ca1b8f7d7fa31cf. 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/QZTAU2314217.