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 0x9c25055464006cc6be8435e3d63b0ad71d9b786efc4224ce7287b76a09fc2038. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a50d84fb-d81f-42fd-b248-7327e7cd6785.json and https://artists.proofprofile.net/proofs/artist/a50d84fb-d81f-42fd-b248-7327e7cd6785.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 0x37404c52621d613e6fe844b0c2f62076204937a639847f999025c74db11bf68c. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BGA261575323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad4ec2563cffe7632c3b157f7f10b2055e5c4decc42b6a91d45225fa16da7ce. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA261575325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a61148241e26ee12561e1d456de57389fa4546eede6ed1311ecdfd1091fb086. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BGA261575330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39185981f5b612f3ae74d7f8b61db3c9217bfb76814b016540db5e001edc8326. 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/BGA261575317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d355c5e071a634724f4c8f64aeca3f82b74546434e7ab2e090bf4649afbd3f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:57:04Z), 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/BGA261575429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe657b3e3c1f94b85eb64565549b302168975a28d9242bf6678eafde07d72afc8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BGA261579392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d19ab1f2a093177bc8cd037bca09b3307f1816b9749841cdedb0d13970203b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BGA261580681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a28aba62ed89bc3cd6cd38b0dd80b8fb8286856058d4808592d598d049cfec. 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/BGA261580684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d28d4714704e47cedd827e5763bb99e311a30a8a8f6cff79187295aa3124756. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/BGA261580162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd15eb113a41abfae5e68327a242a69da6806e4b3c669d460840d417158f42e. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/BGA261580689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd470aa684aa69750d233de54fec860f9bf70e2a8caed936397ff2a184435e9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BGA261580690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e360145d70a44c6d61aca9d563f455d7e5052915b90c94ad4c622740b5a2c2. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:52:31Z), 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/BGA261580692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1c4c886d015407447ce21d99f4d15b549586911317627408cd35ab553acded. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/BGA261581474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5650e9ef8e7843e64e543aac3b17f1637254897c12b0ae6b40d8d3967e5658d. 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/BGA261575320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0f5767401de90fb5a6c3b8b498973c90bb1c90d319bfe7e0161743de1c9c5f. 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/BGA671848401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f462490ae8b464f1bfebd523529c012a8c9fd29c74211a25b7b6c95c8db4b5f. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/BGA261579759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f616eef9b6a0fa74f349f36bcae0977dc38d31f722f2a27d0d454e0f469e30. 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/BGAA82300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2480b37cc58dfbbc56bf83010f91352ab1ec46bc15c7828f44d5c87d4a2433e9. 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/BGA262400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b28c219cceca33de7d02000b0288cb89992b02cf241311c21546136d82c8804. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:31Z), 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/BGA262400005.