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 0xdc61f7412dafe74fdcdd381ab89f468c59be7178c2f57f4e17e65c086e4d65b7. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2fb6934-bcd9-454f-8325-2644b01b9d28.json and https://artists.proofprofile.net/proofs/artist/e2fb6934-bcd9-454f-8325-2644b01b9d28.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 0x5f17acdaa84967f8899b2cbc5f68c6169d698d47d2e2688c924afecfd22463e0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:43Z), 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/ES26E2515801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c552f4174debf5966bd5f53b7ac85d19edc996abe29d837c07347e4c1b11f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES26E2515802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09169f6de9be9daf75eacc0b6211f1529bbc2d7996ee343d405085b6c03484fe. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES26E2515803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b9521b8a3dca1eecafd1a7f9aab26b55ab0cbf02f97527e5e55a4012ae3cdc. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:42:09Z), 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/ES26E2515804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfc2b758617249cfa050b35e28c5fa1a89fc1a3ab892a8259537fbe1b768335. 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/ES26E2515805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbee1eb3bbe8f7c4df266a414f9a15be9a6f9442c4cb54c8be37d0fd134b28e3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES26E2515806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86c21b07e8d7a91d666c78a00c7a2a1295eb3b4e4c4ca7a23514825b499f173. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/ES26E2515808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f262aef1de452aededf4a19d1c65199f7ac33af1c84ffb83207e1f07fef66e4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES26E2515809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efb54262c780f98509a7e17471e8b7d1a2e771ea5069cd56ee446666d720795. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:00:29Z), 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/ES26E2515810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5275a3695c1bceded10378d89c58e9b99393a991fb14b9c4162a9ad3ffcdcfb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/ES26E2515811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6d0b9cc7c1a12fd5293e82997b9d6d2f0e12ddbc68c0c6fcd449e14cd2d32b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:02Z), 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/ES26E2515812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d252e86de4b81d25172c72a09efaca19e52498fd03874e6dc57a975b8cfb08. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:06:11Z), 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/ES26E2515813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffa4a082b3714bd5fdeb0ae517c56b6c59791326a1c7a6705855ca8eab5cf63. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES26E2515814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa774777929bd1e242523633f8ee585a4ecfbe58ed5aa5e681614b54fbd1e9cc7. 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/ES26E2515901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a49933d35dc00bf168053d1cb59b86325500bc7f6431bdccd674188cc315ff. 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/ES26E2515902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1331a4eba764420bed70db300e54e23ef820cf02d2235e5f8979ce2fd799365b. 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/ES26E2515903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff93c30e0692ce9fc29251a3b4babed56cf016237f5a8b38ed2f0a358488ae4b. 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/ES26E2515904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be19f4299bd05e52ec78cad9689bd2a9694f74141058cdea0b4cad465dc515f. 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/ES26E2515905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0289a9875c23895ae9f5c48da7a635906a3ef23070410ba8de1fdb60d1ad4077. 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/ES26E2515906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d4f21d61a8e842e802a6532e58fa87776578219e72f671c474f6fbc4d58128. 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/ES26E2515907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928ecc2e97eea5061e0b99396bb62946b033b79e835ce03241c8349baf92683b. 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/ES26E2515908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0247b3183519a33e3771988b1106708706b4497af8d55a43d0ccd7da45e086. 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/ES26E2515909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bca21b1935dcc2124d03d4506a11601ec6aaa2b514945f49a72fb583d63083. 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/ES26E2515910.