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 0x14e7e30845757111e4fcd665d12d6e0411aefcd70374eb59819603f1afa3875f. 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/dea92ed5-6c08-403e-b2fb-ed7ecb7740a2.json and https://artists.proofprofile.net/proofs/artist/dea92ed5-6c08-403e-b2fb-ed7ecb7740a2.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 0x1e68e8efd969c24e692d2a90afcac8d4339abeef428a52e5340581877f282068. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:31Z), 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/USTC80981266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fb2d830eea2acb31ac9c4120c954885821318e0c8cae3559fcdae0d144e808. 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/USTC80981268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d858431e4f34236c29a9143cadff6dd09b67245cd65359b6533c566def956f7. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USTC80981269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f917c8d67578f1fb009ef5c977d86d4e11b993235de716be20dc4726b86106f. 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/USTC80981271.
Endless Dreamless (feat. Haruka Nakamura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268744d4a8cf1c1e8bf57b12d3250f82987abdf6bc6a4470a3b0c5ea5d536716. 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/USTC80981273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770de03bdf22f5836d070d19caa2fb4eac0fc33edf75b220409883ecbf14033e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:22:03Z), 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/JPB671101258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08511bf3d42ac13242913f12949d90ce9d31d2d8bbcdd46bc80ffd8f8265e30. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:37Z), 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/TCABH1258287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898297433d4d793488341834db78c41286dbe4aaa7f5cc3e2d905f77f4b1223a. 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/TCABH1258290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a47f59309be065dd6c404a7370a1eb4080d93e449f8c5cda092a6c299dbb59. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:00Z), 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/TCABH1258291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3c05665576c4b1e18d65d7c4ea49456863605079de7d7b246adf0b308decc3. 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/TCABH1258294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00433c7f0054449df46807fdfaeb32e707b607b801d8298058497d7003f91bb2. 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/TCABH1258295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf287dfef914b4fe26b36b4bf8e7a7234ab1d0c0787ce2e42a1297063fe43598. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCABH1258296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c976379adef9ba41a238f5b399141d6bff791b0c2a9ae3b8ac92771d9ebeef. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:27:01Z), 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/TCABH1258297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b46e05415bced3a55c342ba45cb51821d078861c18c9876a92bfc3432e80ea. 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/TCABH1258298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc486cb9bfc195d73dffc27fb4aeebef52b96c366ebe9762e8035a9d3e87e22ff. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/TCABH1258300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400d9f7c15defa741401ed44bb32e1397472ebcb51c7ef46d06cc7b9120e81b5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCABH1258301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3c05665576c4b1e18d65d7c4ea49456863605079de7d7b246adf0b308decc3. 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/TCABH1258294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dc99bbfe403c17882077bb5b73fff5b0413c775883b4959cf4180bc8705610. 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/TCABH1258299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65602e37aaabd5d6f403dd3d0dd7e409bd5d79ea42b7936bac3f5b4fbda73ffc. 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/FR10S2275352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3779e646156a67e18ab91e61524aa255794e45e79e1def9071028d8969e12dc. 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/FR10S2275353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e093e86c46c5394a060a9bb57507cd350664669b4e349628ea2d50d64354ab. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR10S2275354.