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 0x578820efeafc3bb74f794709c1a34eb8f6fb9ea819735963526dc7611e4523b7. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fa7cb62-5768-402a-850d-0c526f5cbe28.json and https://artists.proofprofile.net/proofs/artist/9fa7cb62-5768-402a-850d-0c526f5cbe28.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 0x085e810926db6d3ddba9c4b11fe5ac2ffe7c2c2e31cc8f099d7a4855024b7f6d. 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/JPW462414360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcdd36e725a702ce917c9e34841ae1bd9ec8834bd0ab34667f8c7d4868c852a. 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/JPW462414361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6dd958914fe0a7cfff58eb9a202f8bc1f80f2cdcb668ab0e2db36b499afc92. 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/JPW462414362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edcac131bfaf05b734cfd89bb3519511959a0c3a3a5c45a9982a00d185f9d91. 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/JPW462414363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48245afd9dd03abd6dc1d16996e437e963f4e6b54f6ccea4de73f8593f4f5c5f. 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/JPW462414364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daed4d57b9689349420de32a8f421ff7f00bedc9d89bc6827eccde8db7d06db. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPW462414365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd374eac0e3ba97ce27b3618d24539cad098d5c15ec870784f467903905cf98da. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPW462414366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4590484f658ecc807b73b2c258c6d96f004ce7b2aa883a68c42e5854a0f29376. 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/JPW462414367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7caee4fc98ed7ad0bd45cd17fa49004cc92e36642966f75e408c4caa514152. 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/JPW462414368.
Our daily life together (Instrumental. Ver)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4db710ea1cc2ae2cd6161a9d6b865ecbf6a50901305e2dd60213b6a19c9758. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/JPW462414369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a5088114df6a3c7ec1c812147bdd60611d6c459dc3a293dc934bb4376b5831. 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/JPW462415964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca31fa569ee81ea2d66dc89d2da4ffe634dd68b010ba2ecccb98667d3c0b85d6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462415965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11f4dd8460ad49fd7578986f41fcfbe0000a4d2ee52fbd22ef98ef16eb9189a. 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/JPW462415966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0458d57056f6dc173b3ea193fdef0cc826b903a829a1f5ae163463f48217a2. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/JPW462415967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2089b9f49379bd83ac8fa4fd1a5a03fb03b5e9a26ae293d652f34b109a3b4d6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462415968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4475f4b5d32eb0fcf6eb6dddf610f0303607e2dbafbdb6a0010555e5af80c5. 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/JPW462415969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5f3cd1c8944da1d334496b25882e2d7de0c7de4c7fde14ce07ec0320a37f52. 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/JPW462415970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc37b97e51967f24f48bf057acb47b38e6de3c02d9714d5ab286e0f8abfd99ab. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPW462415971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fa419e2b6bd2ebc00f94dc27fd29fb4e693220f44b8e768af7b4f44e1fd06e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462415972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac7bbe45d66e896bd8bc1216e5ec12e532817eb63b8bc5b316fce347e09ad0. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/JPW462415973.