Blay () is a commune in the Calvados department in the Normandy region in northwestern France. Population See also Communes of the Calvados department References Category:Communes of Calvados (dep
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 0x10e6e706d19802f7c54d2e729408e0bd99919558ff24bebb2ebf4e658a428228. 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/3eec1612-08a6-48f0-8763-9115c0c0e3c5.json and https://artists.proofprofile.net/proofs/artist/3eec1612-08a6-48f0-8763-9115c0c0e3c5.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 0x2ee777c80bb4c23ad0d72d6a1a2b0e93ba644772ee21922f559010c505ea7847. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHE862200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde09f747f92c3097d8d37b8d0fc287e159e8e07e209597c819f027d48ba36e75. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHE862200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7734c6fe43259b1225a27e8278922a0f23efedd445dd4a4bd00cbfd2ab35a77. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHE862200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7705479e11e1adcf7c6c19371d0c325abd83f9d4c4a0651181236eb6719262. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHE862200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551e151ef6721ec37a3da06dcb41be48977279bffaf7133c30b02918bdefc7cf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHE862100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e73e790bcfa59a9b647ac15d83f7ccfdd28c45391d925076972f4e1a2b5eb3b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CHE862200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1c3b066d835585c6220eb6ba2f26cce3bef9796355ca3e789ac5d2b8f700a5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHE862200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb80072958da7d850fac87d08dfab575e52a4e58bd37b603ad559b856522e66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0012100280.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d002d4f8fd53c7fde3f3c8a0f1738f33380ae091852099800f4d25af6e75724. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0012100281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf21cad081fd2e73d132e44851b94ac5c4b41cbf3a993ed0f61c350060309cff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0012100284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549586b3719cf86845cfc3b31a27d88f37231e4820550b25bf0efb27cf409deb. 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/CHE862100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b66dab5e0fcac49ebe8e1464478ab52b09d186c868fd786b2e44176de15dc12. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CHE862100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e19d2e1f65928186d5752517e474538f2bfd23e6c2d8207bed48ae111d3680d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHE862100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491b79136013d4d92742e2a54529367d7087384c005fa0fd422b054ca9577fb9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CHE862100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a8d86e5a0da89ea55316b49295f050e1b5beab6c1a64c7e9082021b7dfe624. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CHE862100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf719da3aedab9319bd62a740c2c5f714616b71ca652cf6ac4e8d1fe145dd56a2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHE862100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0c742050a0b367460208f989b0d1a6295f3f928fd50dc8c2b712526d6b9b46. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHE862100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46b1753f374c8331ae2b4375d707c98356b325d5ec511efb5dcb0d9a1927668. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHE862100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd35bd5b7a49ba77bb4c0a11dd4b7dacb24f9b6ed05eb4f2ee744bc85ddec01. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHE862100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7734c6fe43259b1225a27e8278922a0f23efedd445dd4a4bd00cbfd2ab35a77. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHE862200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee777c80bb4c23ad0d72d6a1a2b0e93ba644772ee21922f559010c505ea7847. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CHE862200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde09f747f92c3097d8d37b8d0fc287e159e8e07e209597c819f027d48ba36e75. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHE862200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b66dab5e0fcac49ebe8e1464478ab52b09d186c868fd786b2e44176de15dc12. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHE862100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf719da3aedab9319bd62a740c2c5f714616b71ca652cf6ac4e8d1fe145dd56a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHE862100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40095a730140db8b25da742553160966c54a606b59c92bc87dc8b582f31eda52. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CHE862100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549586b3719cf86845cfc3b31a27d88f37231e4820550b25bf0efb27cf409deb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CHE862100001.