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 0xc955cde89e140217ae35c29b74c8615ebbb0cb9e25a0beec9e7436554ce99c8a. 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/def9558c-8add-4fd0-9759-e6351056e291.json and https://artists.proofprofile.net/proofs/artist/def9558c-8add-4fd0-9759-e6351056e291.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 0xbb05eb031ee39002779756229b76d24b852e26599a0032fcfea75b8640967f0c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR6V80902609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66245b3b7463f1b16e24b974811e2c53a064a70deb2af8d545fa7c09c390b09. 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/FR6V81639788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b849130f52020f4f75e9003c01bea5fe7e74de00f41e78114dfea6c5184fae9. 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/FR6V81639792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb15f1253b543baaca93d6fb03e7515e9c01aea0fa6c339e7c7b55e4ae5159d. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/FR6V81639794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc05922299db778192043fc427dca71dd3a3b564e10ea54e5cf4b693de7babb2. 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/USCO91667001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7392d545c80214a25352460495d6674253d6e83ef62c4dad2c38e5f3471f52. 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/USCO91667002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfe5a2e17d99853fba38909cc7a2af26d2bff0c4428ba6e7c1b0b10c7427345. 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/USCO91667003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527e0ad8f0980a5bd2f736f2aa1ddacfd7be40dd0122ce2252217687cb24f9e0. 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/USCO91667005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab013cca0ebd05dcba9f935bc294abcfa55387ab985ca800596b053a260cf8b. 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/USCO91667006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc05922299db778192043fc427dca71dd3a3b564e10ea54e5cf4b693de7babb2. 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/USCO91667001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7392d545c80214a25352460495d6674253d6e83ef62c4dad2c38e5f3471f52. 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/USCO91667002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfe5a2e17d99853fba38909cc7a2af26d2bff0c4428ba6e7c1b0b10c7427345. 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/USCO91667003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527e0ad8f0980a5bd2f736f2aa1ddacfd7be40dd0122ce2252217687cb24f9e0. 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/USCO91667005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab013cca0ebd05dcba9f935bc294abcfa55387ab985ca800596b053a260cf8b. 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/USCO91667006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb14fc90329d5a062bbc75e8ba3696ea99dd82f474ad9af9991ceb04df59ca5. 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/USCO91667008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4cd236a499067c9bce5bb5856cdd100aeaa7f5a674dd9592f8e7c964d775a2. 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/USCO91667010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a4f15b9d8320f0315636f18b1f42d71b42fe4ca35ef46732b76c123b20c313. 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/USCO91667013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22b422079c1e233f03662ccafeb704af222274d614f1e6687034616f5959cb3. 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/FR9W02000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416240969fe8759f3fe554cfe72e52855d2174eb686f8bb4ea6d6d2f7a243899. 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/FR9W02000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778297bfd9c7f0c5292884f7bbd73989e4133c26515ccf29cb1b0c1e7e7b0655. 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/FR9W02000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb01aee82f9a0eb2d04edb5948e25625e95ae396a2d3db29c016f8203820e87. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR9W02000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc43d49a84f1e3d9930a1d49f7764c31a3686f47c0eede3a5b09d739940b379e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:37:23Z), 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/FR9W02000039.