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 0xc9620998b26be7b2d190651e55d55dbbe5b4b3aadfc6a66e5b89552259695177. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/106dd494-773a-44fb-a992-2a0e9c500958.json and https://artists.proofprofile.net/proofs/artist/106dd494-773a-44fb-a992-2a0e9c500958.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 0x3b27ded7d723050820425cf8b0a1be56ec8d73093745f66a3eb16ed702e539bb. 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/ES21A2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dde2a6f815733c1a2b975fc96e4763bd07bfea02d5aaab917d9490604de5f8. 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/ES21A2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5f2bcb639ab27ce5adf963fb45ab6c4ca660df911367be02d15ef00c845c3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES21A2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8769981ca66fcebaa031c59a63967cca4251d399eb8ca270ca956e2adcac7540. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES21A2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b0955b776d50a5e659fdb87342d061277c757ef87a7a12206baa924a333538. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES21A2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b390b736d000426923137c87e3990cdff5da91bed4bc9937405ee9a4c1e60d8. 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/ES21A2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365e0d7d49af6b223f5c60ef462dd55aaef3cb0bd49f002abe7427f0039afb03. 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/ES21A2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4949be31657e29edb45212d6de600b44aea34dc1bc2c346d72bc1e67b557a0b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES21A2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d061edee5d40ba399934e0248c8032fa3f83c7fea211f88a5f77915356f5f94. 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/ES21A2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e322710da1595ea379976a79dd7ac86bdd0d7e7511b966d8f84cb705297d94. 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/ES21A2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c4a49a51cc1584176a94d08232875f04d4932676e3be96b7be57b077324ae6. 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/ES21A2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd900eac36503516695fe968d6ec6723ed60c6c01a251ba832deab31292284bd. 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/ES21A2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d9536412606fde843ab2960eec5e40a38dd853e5190c22e6ae7aaa9d33ca6a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ES21A2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b9133ab28a40612b5a1e23f044bc41c38fbfd5dd4930702b1b5cab49ac093b. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ES21A2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ce9f62dbceae6b8d3e4b292ffae441cc3127c8a871da3fc0189e66ed9a0601. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES21A2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689c1582b18a3fc174ba692fd5fde6733d6976c84b245f04ced3709837af9402. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ES21A2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727904c1bd49fe62b2084f17226b185f00d3b47a011435b2a497084d49b73419. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES21A2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d77accd9d4f49a8455e0b8de4da98b80cddcc73942d3e82ed59302cb440a2a. 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/ES21A1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffb57a36b21491c4b6a45ef68e78fd8710c681558725398a47ff9cb61a115ea. 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/ES21A1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24da8d089911278c0ef2d5a0513d0aab03c1a7092a24c583dfc93fce50eb2c78. 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/ES21A1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c159737c52f540b48346ab0649464048ce2fc793e99f69cbd1bca213defff5. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ES21A1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6949faa0af13ca5465d4d8bc102c405405705692a57337cc668b979702ea6e2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ES21A1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9076e38a4a507dec3f58e9475e506fdb933ffaa9279baa92a72c59e850be9a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES21A1900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0801be2f35624eb4ca92b692dbe2aff845d46f5d07944d1628f1dceb1ef7f5a4. 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/ES21A1700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1128d803867f82af104abaee33c4808293d85782b520ed42ea4004d962ab87e9. 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/ES21A1700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0446a02114640ee1cca6ebbe7b99142aabded6420ce81a61fbc835df45c6c8. 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/ES21A1700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504162252f3deb9a71283396e5904748bc970ed19863d888a158315d18d390f6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ES21A1700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01380f9ff7bb10a14a1e1913373f3554837abe71df1b03f743fb5bd1258ce23b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES21A1700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e322710da1595ea379976a79dd7ac86bdd0d7e7511b966d8f84cb705297d94. 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/ES21A2400034.