Valence or valency may refer to: Science Valence (chemistry), a measure of an element's combining power with other atoms Valence electron, electrons in the outer shell of an atom's energy levels Vale
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe630ae08250d204446fdc802d1577b7a88528be6098c32ae21e6fdd6998161a2. 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/9aa6ee50-9b6d-43dd-8edc-defb86e29567.json and https://artists.proofprofile.net/proofs/artist/9aa6ee50-9b6d-43dd-8edc-defb86e29567.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43870c856a23a2d0e6b29883030d63e21629f4254ee84f63814619050c6ceb72. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/CAY9M1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd92f0af6fdda6b18da736cc770243bf1c48330d9039d09186fbc7d8bb1d6c1. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/CAY9M2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3f2ba0d93aeaacd9aade899018bc7c1ee226423163ddb34b904df9b38b4749. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/CAY9M2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc827f3b071259b095235a98ad0b2877ca938e48ff3aedd3ac717524f30c4fe73. 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/CAY9M2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11ba40fb539fe67a6cc3085245ac3f2ed4f979be3e322f0bd273365b1465253. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CAY9M2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1572055a279cfce1e8f4757d066a45f0666a731bda4965790709c3a5a6a355. 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/CAY9M2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2738e62e9066dd1a3db21c115648770b2b9c92c327a0f53d68088a1b0b41ac7. 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/CAY9M2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3618090c93cc0afb5b7baa76b8d427bbb62ee153fb6f7ef529eb17e90c248eae. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/CAY9M2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce02734388e6d254f0b0d7a070b2b3441dea53178b3c3c8f2201aa9fe109153. 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/CAY9M2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cac4ac8c91c2658d5d9ce069bad7a65dde40e649f0328d19b8c4d896ffde91a. 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/CAY9M2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593535d60a9d54716e799c2596e1012e813fbb1b717a0f4795525566aad5287d. 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/CAY9M2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710a39e8a914236e96a2e128a4660a01efc57538bcbb973ea2ed3f658f5555ab. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/CAY9M2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6094c4f1e1c9bc849aecc68477ffb1e4b3e1aacc747a98aec2895b1713e57e. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZDA62484133.
Un simple vol d'après-midi (Napkey Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac2dfb695be7caae6f2c109c9f09e3f4afe8a3603e7670423cba820b2d069b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAAQ12100399.