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 0x1ad6b0c2d6e902fb5f27b33d6751bbeb2bb7afc851e455cef6ee6f3e0672aa48. 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/626c1582-e35e-4441-b023-8ede3db2308e.json and https://artists.proofprofile.net/proofs/artist/626c1582-e35e-4441-b023-8ede3db2308e.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 0xc7bc010e1233125df92c84deab0bbffca451e4561f20a0c3cbdd1bc6a30af437. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/TCAHM2310080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00263f146cae7f3bfef2a24162400ebef323a48c586591d674d8cab940311769. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHZ2450567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2fe243808a200e171659c455dfe9c79a1741e0a65281a04108fe9079cbc9f2. 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/TCAHZ2450572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3c170944915ff16699733f23a5f69ba7cbfaefe1e7634a89532016fbe85a52. 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/TCAHZ2450576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24a33a8f532dc6275141c1a9a63e065fde6debafa52d20a153b240189fac279. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAHZ2450583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67fe8694702f34951b4642f54c8c02998734045adffff0afb45fdb4b0bf98d8. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:07:45Z), 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/TCAHZ2450589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471caa31770defb55fa1f7304bcd0c9fe5f0f4f19b56752d51fe78d0694f3aa. 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/TCAHZ2450607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cd30c4345df018cbc033eaa6bce4700d9bf1852da45a87c941f20600c70de5. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAHZ2450613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4573cec672fad49ed92986a3e44bd42747f4026ae95bd9dc8d506ecc6bfc82d1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAHZ2450620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4e5713acbeb87098e29672907fb7e22bfd0d4064f2ee91cce855224a6d6fce. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHZ2450630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f18c991ac1d4f5e911f974c039d97e3f93fc35737b96fc6e2e8eacb5d809ad. 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/TCAHZ2450643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd9d87f1562f5f5db6d656533f2988e4102bea57c60fa5f7172ab9dcf29a521. 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/TCAHZ2450649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2363884293e5bcdaaa8e45708d889c563cfc43b80d93e3ea73947203f54f13. 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/TCAHZ2450656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ed1520db564245f5009559cd81f91289dcb4aadf7773c03eb2d8f7b34d0afb. 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/TCAIH2422360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b09a1b9b79a4fb3548916897e2890ef858199bb3eceeb641d07c283a01e1c9. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TCAII2422583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b134c3ad160f4413ba0b39d758e65447065dc2b70541385eb6cc21d3795033. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAIH2422592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c50c15a2fe030010ee68b83a32dd8df62c3d20921831475a54c278766b6c577. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIH2422601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5391f1ef5f984d50c1192397b506b8fb55189a7ef1168d83c2039d97e6955857. 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/TCAIH2422690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6cdec7c60f51b417f2a211feac905a6337dff079b8b74b8dbb08bff3590499. 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/TCAIH2422701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f86affe403c9d79a9bdbbd75898edcc715299ebeb3820688c2aadf46f74202. 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/TCAII2422730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b25016cfc129b997273a8ddc6b4643f2ca49509796d49723fb3e85df546acf1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAIH2422746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3f9f352ceac80a9dea03207bdd6d927fe3aea6ef75bdaacd44fa0b4f774509. 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/TCAIH2422753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76a38c992b36a31e701b889b7bd43db7f1af3a100bec33f8058094350bba8aa. 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/TCAIH2422766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742d802370a0d031e237c2d049d4d8901c82db4dabec55de1c6a30701521bd90. 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/TCAIH2422777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feae5278ffda3e50dba0cb2694e41c6cec827df5da0ccbd35e696f7edc9c006. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAIH2422784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b91779a4df6222d7cf34bad063b2754648c942395cd35061efab368276df30. 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/TCAIH2422795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371483ffdb43824164ba8d3b07a6cec99d3510cb6611b833f61e7d3302f2aee9. 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/ZAEI72500406.