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 0x99e93b622566e3ec7ac70d737b1e44bece11f762c2468691d4560f29931c14c8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cb6c4f8-4932-48c3-8d79-d5fcae1e7320.json and https://artists.proofprofile.net/proofs/artist/1cb6c4f8-4932-48c3-8d79-d5fcae1e7320.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 0x8b6da8d44d6b273b4f9147b1779223ce320ac9180d2fb0bbd2a991d20920f17c. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:26:47Z), 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/TCAJH2566700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4788465f127e63870bf52c6ea0c4df2586162f9902050b9b29de43716e15538b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAJH2566705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d435eb6dd9acf08930c891b18b83dad8366563548e9b4453b43dce0d87f37ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJH2566711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b520c0766d883eed102c9156316348738cf0764211db903a8eeabaa1d058978. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJH2566720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebd98ffd82bdc0a323359144afe680015bc8993cab7e725f250670647ff0bc8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:22:40Z), 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/TCAJI2554233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d79317436d0072b1e75f5e51cfd2d7f662bc400623c1b8dfce6b9743ff19ad. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:39:20Z), 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/TCAJI2554246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727f6fab382ebcdfdcebce60d868cf5682f6cf57f9c8fd334f19badb94db76e6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJI2554253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa909cb8cf61b64f3423f819d18e6829911458c66a2f7995c97b2f1ddb11de0ab. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJI2554268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa95db755bab5db8bece983f6b8e965a04b2d08403642405f3c2c77e4204350b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:55Z), 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/TCAJI2554274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987ff9a0335362373aa9a56a2f51b6a397bab5f2308da1ab55f12aee6ef0577c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAJI2554293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c2282170558aa18a677c3eae7ccb02f83490bccd7a6fed66000d60c149a0be. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAJK2524902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a875187379d82b33763ca6f9ff5a7512d9ac30ee9d45a952f6a2ba41776f60. 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/TCAJJ2524909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9081caf3a4d99445495d094a1f6e75b9ecb0653abef6f2d1f2f8621d458138. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:42Z), 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/TCAJJ2524917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4cfb60b4963c3e1330bb486c4e723a96982892b91bca063138ba8344ca2cd3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAJJ2524923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2354f24de1840389ce0da19a22d450a00fa1a686fa0049c946690e8637a2a79. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJJ2524998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae52c56b510d28dfac3d9abc1fc6001bcc4baa5480e88c02f8bf686084b4ac3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAJJ2525003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650f02441a71c7216e018c75b65fbfad5063417fd9c67ad0d049dc9eb72db805. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJJ2542374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f03d29485107e926ea66002e5b1eb3e92959e609b8053aae8f337a2a78e005. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJJ2542380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6da80043fe7c7a5eb96690e3e8a6c7c6c6b3c8ee6f0319c317004c20e6475c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:38:08Z), 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/TCAJJ2542385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21123baeea492fd40d4957b62833cdda59994c2ae770f129952809b8ad51d204. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:28:40Z), 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/TCAJJ2542402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610d9577d622a37024a2f259122bedfc30bf23d5ad9a1b9e3d2b80b7350a4a3c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJJ2542408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2845f48961168dfff8450dc724cae9d2f865af5cba5801f60a2f5003b0f7bbbc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJJ2542417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31737a4ca06f52ccf24b5e246ed97d00f885c7ff75b362a9a93f7faedbe29d26. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJJ2542421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eba2f9df5fcb8663e1ffe54639cd3caec34d9fd06476c9a0b09e3332dff551. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJJ2542426.