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 0x199a4a58ed6d021a9f7fbddf8baf70937cb18853cbee2944b1f11969ebdb727a. 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/39b1b763-67e9-47da-93c4-ebacf06a65b4.json and https://artists.proofprofile.net/proofs/artist/39b1b763-67e9-47da-93c4-ebacf06a65b4.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 0x8cd543970b3464cf32cf9b56732985eb24e0d0e7cdefb72cde5ad921419fa66b. 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/QMBZ92331215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3bc9fd0b176bab063feab6593e63f45ffc9acd1d2acbe8f40327fa5bec2702. 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/QZTPX2274100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d99a213eed072ee12e26bf0fa67b6dd6afd2fe8fa08f5dea468e6e36fc54c7. 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/ES71G2138461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbcde09ef7222e5305858531033521be384af53da469da4c527657c70011125. 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/QM6MZ2163711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2bf774e7b6f0b4041e17d17a39636cf23c89040790038d38949c6772a6f25. 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/ES71G2115374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0201f65eb187cba80a35242165ea777f57fa20a8b2259787521caa3c8093c0dd. 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/ES71G2052629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e603dd68b8709c1d534975f59a46a73588b42673b1337495aa0905626c2ebc. 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/ES71G2030897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f14ed3f95b2bec3d3cef7d0ee77e30c1ec0be2feb8fcbde731a8da1267d895c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QM6N22025043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7735b31648de62bdc6ef89af0dd5d558dfab9e32e0168911f332e7c23a5418. 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/TCAEL1911609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca29a282c09b0f3795d61d19d4a6980fc363a95d66c71443bfc5778723f661e2. 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/QZFZ41969272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01671ee1c44b584ce262835d882b1b583bf4cc3c2dd39b8e97014de7c4cd55c. 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/ES8621900604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcea52941e9fd8b150d21a871103a184b29673f576c12c4d82b5e0f4b0b9d9b9. 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/TCADZ1874440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70138ce1ecde6a49c3b520b86e8f59c604c09330b60aff294aebeaa29c7f0ec3. 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/ES5701700207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99791d84536217a9686923dbd53afd00bad704c69b415e7cb3a0f4190e81518a. 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/ES71G2201745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67364759a65a47068b5de0e7e2c30a3f1f74201951892930abbe619ea571af5. 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/ES71G2201746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9274f43c3443f1aa480fbff56487f254088dc9f2233d7e8e9033043fd7dca7bb. 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/ES71G2201747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166f7961cf6ca2bacc5e221c37d9e378894cea951f46382b9a64c625eb6da630. 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/ES71G2201750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc9caaeb0c53c72d0bb01162b181b822ed58f1c9e63daed72434437fe6e59fd. 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/ES71G2201754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cded9e8e6ddd556d6e4f1b98d52be11b43f13c0c7d58751926f40d861462c55. 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/ES71G2201748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090b0f74666f3c0b5a60060449f02bba4f46245b078c67f54df0dbc9a0d4c8f3. 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/ES71G2201749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7c737d1b9a1b15697194b9c9144497a81e89857d0615949fb1a9cf93eee83b. 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/ES71G2201752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a27208686a5bce5a7306ccde2fb3010e8698245a1e6aa73fd4b5cabc0b7eabb. 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/ES71G2201751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91b05a0a97db7a98b68bbe5b730954ec5d5ccb381eb7e9efc2d1c09b6c47800. 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/ES71G2201753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0201f65eb187cba80a35242165ea777f57fa20a8b2259787521caa3c8093c0dd. 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/ES71G2052629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467305f6ae1671ba91c649a073ae375ba11c014a06ef1a795e8285da1ca14b70. 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/ES71G2153480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d99a213eed072ee12e26bf0fa67b6dd6afd2fe8fa08f5dea468e6e36fc54c7. 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/ES71G2138461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f32e2dc8c67d4d6a743c53abd2627399ffcfe9515cc31681d155f19e6170c4. 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/ES71G2127839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abebaf9b2262983114ca5d32d6fa0d43f086d457070f56e1fd95e40f6afe282. 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/ES71G2243960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5014b9466e320a058a569b380d1cc54b3e1ac9f7100e741a3f15ed791289cf5e. 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/ES71G2243280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cbd9a52b2c3ddb52ccc2984b0d44ad2f6a367da8fec224d928e964d4def3f6. 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/ES71G2243279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abebaf9b2262983114ca5d32d6fa0d43f086d457070f56e1fd95e40f6afe282. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G2243960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54bdba2c57450a678c8104c5d787745f82f5a43ed75c8ba813518dd213d97b7. 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/ES71G2243281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bebf102f1ef67fdcc09557c7456ef1844f1296e4be8934d47ce7004fa157837. 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/ES71G2244122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bebf102f1ef67fdcc09557c7456ef1844f1296e4be8934d47ce7004fa157837. 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/ES71G2244122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54bdba2c57450a678c8104c5d787745f82f5a43ed75c8ba813518dd213d97b7. 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/ES71G2243281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bebf102f1ef67fdcc09557c7456ef1844f1296e4be8934d47ce7004fa157837. 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/ES71G2244122.