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 0x133cb35e0c860218d4829c43b5d2e9f5f21bc6794188c7b322e6e1696c7d8584. 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/26d85b05-d30d-4545-a680-88ca8adcd16b.json and https://artists.proofprofile.net/proofs/artist/26d85b05-d30d-4545-a680-88ca8adcd16b.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 0xabce2362ba90c4c9d585166abafe15bc450b6988084ba67b3831e9decc070eb1. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNWY2538519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7f2a4f1da06ea9a9b9d35805e191b1aea8841aeb7732fa78b93fded6924b6b. 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/GX4R52576564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a930cadf8888449f4425c36eade5bba615b7d843ec7163b7b45be64368454dd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWY2536986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a28f7c6544db63b4d44ef3265553c031f2d06229fef114fec9961623895894. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GX4R52598239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3b3dbf3011e11b7409c4c881821683c6ad2ceba51e228d2bb6c5f393ed6573. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GXBAV2115065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60685d767056075cfbe5e0fabee7cc231919fd7b07dbd061a3309774d2db1cd3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXBAV2182729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa940bc7e61c0d1901e268f7e4e9357cb3d406cc37e81b1c5a4c2420c1c5462. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GXBAV2125339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78db9276a0c24192e437d93e578a5a626e8bbfc8e396513ad5307c50acdc3be6. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GXBAV2164050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455b0739334de6e6dfd95d89d5dac7cf25e389b8b50906266d7eedc293ec1116. 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/GXBAV2147593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6a0ac72ef16edcdd9a50f3f24682814b3f319f17b31762b5a74f69de2f7bde. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:53:22Z), 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/GXBAV2142842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8ebd06bd8ab3c1a981c4824805f7148a32755584a72b6ea42f7b11a46b6182. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXBAV2100245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf660338e079ed0b2e63872ae3d3ff457db4466261416d3129ec7a04cf010a703. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXBAV2145636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f8e5a58724e18f0a3914ab25085ab91cf39403eac838246531647bb4a2659c. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GXBAV2173671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968a09c4f25d4c9bfd30ef8de9cdb8152dbff263ca1ec6780b63681106657100. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXBAV2156006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec92eea5a0a03430b3d93d959f4aef48f622317fad2334238d307adcc58981a0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXBAV2019441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe6a1be24fc655aad0e5580b44fc3a99a32c8ae70305d1f8b3582ae1e74b5bd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:07Z), 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/GXBAV2094035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028f045177c8c4b356da6a70541aa42c4bdd8fefc8910e6f3d8351c64232499f. 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/GXBAV2039973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890ab6320e7089aae83ad5083a21fc90f1f6091036a5c970c5c9753e5d160bf9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GXBAV2018110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9053ed3e86e4cf21dcf05b9ec315518a161794c89f8536781ac02fff02ecdbcd. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GXBAV2017078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6db6b2d31f61bf3bcf7b4ca56bd3f337c23be6513ad71b4a419feea34a07200. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:54Z), 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/GXBAV2098076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42b3bafa596b9cad5fc1f2760cb7bc95e328274e6f0c049d3f1820e218cda37. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXBAV2011248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ea851a7ae58d19775be4c4ba039af8731f7feb22838d940d5784c37605f9f8. 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/GXBAV2135595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff569c86750d3fe8a0be64238254a2f3d89e37a022012325f9638ce32cda4673. 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/GXBAV2139127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee5448145bd5fb4365a1b1d2411c0ae0149c1b8cefd89b383f304f60e1a0aa. 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/GXBAV2185759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd8834c45698ece864963ccf214ca1d7230921f9e708a862ad2a6e1b70dd994. 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/GXBAV2197571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab17e64cbf840ffb84e4a2ad830b3b825e977150c53dfc0fc126ca92eb76ad. 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/GXBAV2106144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810cf8ac8c9255ab2d68ff06ae8f229f9667480cd004dbde96f98d09176e31a4. 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/GXBAV2170813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b93d7ee053b473466710b3f42d8b969d8d44f80e57808fb19ec674cc13f8b. 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/GXBAV2164217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201b9ef993dcfb4e86ebac6d2900187dadaf695ea14b9b46ec4351190f66305f. 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/GXBAV2197516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91354b492a55c155068ac9aadf4c2dd9857f49db1033e7716c70cf3731cce13. 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/GXBAV2108404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1b92bf50fcc27730e8c8a64a181de61797771f860d998be4cab82a359b3694. 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/GXBAV2104683.