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 0x923b707193d9f93d27f0f7f2564079a992aecc00b5b58fb45f21b8c44e66bb05. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c78444db-d6ed-4f45-8156-dc69c66c855d.json and https://artists.proofprofile.net/proofs/artist/c78444db-d6ed-4f45-8156-dc69c66c855d.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 0xaa66c932d26046682be7893d1049b4a555e26219428e7db28eb63456445f96f0. 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/TCAJC2411051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c5700fd8fc6164d57215b170a7806805447c56e28b5199d373d95d58b3695. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:29Z), 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/TCAJC2467114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5769a5673b4e8eae89e5543c0cc373d2176fca375f1b66ed966918867fc78c12. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJD2478046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfece426be81d3c76c47a846628233765d1fb9bbf6fc9e34930251f551871cb. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAJC2474379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21a9a5315e8bd3c794cdd8c4f45f87d2bb294a3b61b708285d6aaf7a521e439. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJD2482560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b228ef742d4709e129883c712b1acc47a59344f8bbe1e45f2fca79b69f2d6b5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:16Z), 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/TCAJD2405798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fc1381dd50ce5ae06b01f36464df37e15aea6311a5d6207ee5e3206766a1bb. 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/TCAJE2406137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f951b387bde227287d9da680529c3d3d8031510c0ed1a9d7ebc2811eb2d681. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:13:14Z), 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/TCAJD2406184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6d8ed724fcf5868cc3cfaacd43f50f9868fd98b872d4154f4b443b5479c5dd. 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/TCAJD2405849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde691afcfd010d6cff85cbd7a89708d4faef6c523cbe245273209c38738f6c3c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJD2451928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dbb03c93a6cf62b31b03f0d56df2ff182f7ed7567ebf9b191862c677ea1006. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJD2452791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302af4150eb5c4effc05d21b7f35ad6114d7e42f34adb6b2aff029a6bcb81572. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:14Z), 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/TCAJD2451840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5218f9818e8b59e0afacf01e4f735ceae65127ad4201a13258cc24702c3141ab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJD2451619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3986ede506585604b8c072da8dfaf8d7cb7521bdefa187a60a6a286bc7ecf0. 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/TCAJE2471610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f102d62f2ac4a7acc94118fbc565c4b4f8eef0e32aba5c2f9e99f40b32b9a7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:07:07Z), 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/TCAJD2583266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23980c10cc4c1ea93cb890bae62efe511f00fed0139f8c6a932ce24a53c779ed. 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/TCAJD2583139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a57dfa35d237cd2d30d35d9af146d71a84df2b082316bf0c4a26aa46980888. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCAJD2583297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ca9698c3864731ce3c44111ee07490183bcfb10d675ae655724860847f99de. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJD2583081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146c2d0fb81e131fd490aba67f78e9569f946f87225c7aefb64708e02e5352ec. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:38Z), 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/TCAJN2525672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcc3f10eac12d4df8228efb050e7001ddafc15d02de1abd21ad4fa75480cf00. 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/TCAJN2525756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba3ad402b09cb78fecd5cc8499c800c17c9f0f042232a20c4ec560448f9473d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJN2525732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e51464aa52c9218fdaf9e9acbe0b16d5dde0bbd9691f7f47d65dc137c574d04. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:44:42Z), 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/TCAJX2565934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33722cb8bfb6bedd3ad361fe7525c19ca06d0995ea87b435f32da6a5252c5319. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJX2565849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62be16175d2ffab62f8cd633911729a5ca9982b93f5c0702e3c4d1403a415c0c. 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/TCAJX2565794.