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 0x0492772a61ef032fdb779f72a4d1679078b81b712c3baa808920794ed6aa5cfa. 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/2f8cef10-a213-46b1-a5b5-ca309cdcaad1.json and https://artists.proofprofile.net/proofs/artist/2f8cef10-a213-46b1-a5b5-ca309cdcaad1.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 0xfd0ed042de3106d61b8e56bb8069219810557ca1107e94e12328ccf754c04054. 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/TCACY1720740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e9ded84a93f8fc7b083e51718c6ac2f1d5ccc7ab46cc1d736d75c0d949e323. 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/TCACY1720741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9e185b5de24a120e6e97c6414fb0fc32cf55bd57ea36af081594e750925324. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:52:16Z), 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/TCACY1720743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3005b53821d2480ab909addb8336392bf2b74281746e92ccbfa780ff28c01d35. 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/TCACY1720747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6448fbd0889e4a75b109128cbcd4744c73429d651d4c3917c89d7f255c259997. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TCACN1670270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1738158e5809200e3a66940248dd2e700a3cb36c5df1f5ec0254a4365fce659e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCACN1670273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ebf3a08764dba0627601294d99ba86928a85be781f0f4da4636d5273e68e80. 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/TCACN1670276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fefdd95088c8b67ea63d1c8681ca0dc14af8cd17fc1aa5b85ea45a632b7c28. 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/TCACN1670278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75575a0803f9f82bc9d61fe358998f9c9a792e8e3ac80c91b9251fd8a53822e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZ5AB2044958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b42a514f76dfb57b6402f74b8f6200f95fee782074ccfe0daa16e94ef47a3c. 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/QZGLS1978422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ae9ce773c86527fbd329a97c6143df50e310f19d674c06d15532e5d6f4e001. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:52:44Z), 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/QZHZ41931628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71977f30ce25d73d931f0d8ed52f000d66e905695cbb0cb9886f3ca6aed49d3. 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/AR1HI2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51d7db9daa442c9cb2758fb14dc11306cb9595dddcb5514571214730cb2ef25. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMA22129975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf13246d95e3c1666daa925219403149d08bb8b20ee91e6aa95f731e96a7afbc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92401778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91155a5707a46e24db236d519950916f424e00204722e0b63003d1e7ec443a6a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX3Q92401779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcd1507d306be34dcd28e72ab481bbce6986f4f0e6a0e146e43d1380e74bef6. 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/GX3Q92401773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39116bdb8cb16b35d98b17818c006c0a973625581fac0b76e0e896a877fb419e. 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/GX3Q92401774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75390bafb6a6b426b96b781f1e2a761f9df30f0185bf68fe2fa99567d2154bd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92401771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554bed25d06bac5452864d9cb7efef8cbc039f8209135f9a7c6d8756cdfcf9d3. 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/GX3Q92401776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47309036e6259685ffe81d908a44274ab09a2cd7efb08cfe1afd2969bbe3b48. 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/GX3Q92401770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cabda6676b5c570cac3ab9ed861eead11723c9564a73782a97e25a0edc5eea2. 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/GX3Q92401772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf214e18bba29792306ff747a5731c16a7bbb64b16fe5bf2a09215a08d488dfcb. 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/GX3Q92401781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a568d6926f057ca26da25f5ecd888ed117d395104656ddef9a157d13ef5c399. 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/GX3Q92401777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3182f460269898c63e886884e14aa503c1155b465c403fa885b503a9ccdae8. 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/GX3Q92401775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1115a666701f239e01bccfa47af21cbd54445e4da9bef2540e9c1a19fb8c332. 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/GX3Q92401780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439031dc085fe2e65c65a50865b02a7d26540a4d14bce833615257bba74f55f. 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/GX3Q92401769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf13246d95e3c1666daa925219403149d08bb8b20ee91e6aa95f731e96a7afbc. 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/GX3Q92401778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91155a5707a46e24db236d519950916f424e00204722e0b63003d1e7ec443a6a. 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/GX3Q92401779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcd1507d306be34dcd28e72ab481bbce6986f4f0e6a0e146e43d1380e74bef6. 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/GX3Q92401773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39116bdb8cb16b35d98b17818c006c0a973625581fac0b76e0e896a877fb419e. 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/GX3Q92401774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75390bafb6a6b426b96b781f1e2a761f9df30f0185bf68fe2fa99567d2154bd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX3Q92401771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554bed25d06bac5452864d9cb7efef8cbc039f8209135f9a7c6d8756cdfcf9d3. 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/GX3Q92401776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47309036e6259685ffe81d908a44274ab09a2cd7efb08cfe1afd2969bbe3b48. 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/GX3Q92401770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cabda6676b5c570cac3ab9ed861eead11723c9564a73782a97e25a0edc5eea2. 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/GX3Q92401772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf214e18bba29792306ff747a5731c16a7bbb64b16fe5bf2a09215a08d488dfcb. 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/GX3Q92401781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a568d6926f057ca26da25f5ecd888ed117d395104656ddef9a157d13ef5c399. 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/GX3Q92401777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3182f460269898c63e886884e14aa503c1155b465c403fa885b503a9ccdae8. 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/GX3Q92401775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1115a666701f239e01bccfa47af21cbd54445e4da9bef2540e9c1a19fb8c332. 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/GX3Q92401780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439031dc085fe2e65c65a50865b02a7d26540a4d14bce833615257bba74f55f. 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/GX3Q92401769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9271ddf6512bc632859412af9013719aa8061b9ea9fffb4314d912c89c89a09e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX3Q92496499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274bc706c8dd1af03db216c6ab3fd2552baef89851b2501e04dd20e85e7e114b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLS2442190.