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 0xb00a27bceeb2c82e10095357adba00dbb4c00f7c668ddd39fd2d58b7a16b8186. 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/8f85ac0b-8724-416e-b6d6-2361fde49d27.json and https://artists.proofprofile.net/proofs/artist/8f85ac0b-8724-416e-b6d6-2361fde49d27.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 0xfe9ceb94754c3f014b05b04d45b3090ca3e33c75ee3a85f242a142f82ae44738. 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/QZGLS2124916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f498ec8a6a94dc6a652f1faea210fa188e7518329290ba76ec31eb6c54eef5e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZGLS2124912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e843e5c3d315e2fd63035e5cb24cc4a56cf77178e3c41f724bbe4c3c0593b9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZGLS2124914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee202e7d615ea549032ee71552bd060212d91aea5f71e8df340ac3f869af293. 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/QZGLS2124913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac719df34f39927ab901fe693e3d5fc5b4d7721d7f666ba0e212e54f2f6bcc70. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZGLS2124915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca25a689b44110d08bfaedb71fd14af7b3f74e04518df4308598a89cfe46809b. 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/QZGLS2124741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d0f36a23dddbb56b50d5c9bbe988ffb0c36fddc95e4809aa47104593b5dbb9. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZGLS2124742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa987a82f7a1c21af9c79bef62288cb534bc72103483b9a528a45841b29890537. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZGLS2124752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87115db74cafddeebadf6cfdde3321c0d0f2bc07bdcfbaa47cabd42f590d6ff. 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/QZGLS2124753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280912e3c06ff0a51c9b2a2ae008610b671794505c80ebb6c1f91e40c7b49ac5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZGLS2124745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa287c94fc71b889fe24d1830da07a66616bd59a136b47b1bd58ddfbea04bfe79. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZGLS2124751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3877f0a7d7cd2022fe877f07c251bb8ec698311edce086b86b67e948b3a7a8ef. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZGLS2124750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ff3126c2dbb1432299b3e3a9cbf40c4c59dda7d28b82a81189c0ac3544d1c3. 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/QZGLS2124755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894405f7a1bc7d90f91887c6a2c3d9925b2887ee148fdebfb15b808937a1e7e0. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:35:54Z), 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/QZGLS2136250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42ba5ed40c1514281456dbf6b28776b5399ed64bfe2e8d87083b7459b4d1e37. 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/QZGLS2136249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d09b6915ad390190870c9013741ffba561163ad3f1d7923dd6fcdd2dfbd54d. 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/QZGLS2136248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80cfa3087a4e93787d97e9f0e75875a8d4551e2c78d7a816b50dbacc15e5f35. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZGLS2136251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1cdcf096da3fd44e4647c2d4481c8882f111e76dffa484f6a748b55e4c7f0b. 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/QZGLS2136252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf485281be477aa554cf18eb984907113b3d95a1fcec874c521d57cfec4e63bb7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNJW2143642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa036f861237499fc21612e0ed111719ae3f5bbadf677ee5dae54dcfdeb8e75b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNJW2143647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bc514f149bc91da808cf65262639b02d29901c8f98b433ca98ad630ad82a2b. 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/QZNJW2143651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7f47dabe89a0bfaf2ab0458cb5c09818982cd7c75f850c49e64089afcdae3e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:05:00Z), 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/QZTPX2422622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1b69d1b23df20700e058c35652e311222e0331f45657ae0fb376f8fa09da9d. 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/QZTPX2422623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088d8180bf7a9062dec301ff8bc31141bc600d7d8973c65c880f63332384417a. 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/QZTPX2422624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fafd0ab7408caf74f4e4d8159e28c6d0305d4a0d83330e14d8fffd850301246. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:25Z), 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/QZTPX2422625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2722c86ccce6176c73ca31d9f239235fb0b4e89ead739f21202d0ab1f058213e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTPX2422626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25655e84a0059eb3cca21f885769e04d7099e96ca4210cbbcd738db5555d38bf. 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/QZTPX2422627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35659edb7b939028156db82fc5573f60145e3ccd07da2d699e262ee2532cea2e. 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/QZTPX2422628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27c8325a2a5f0576cfc5b6197bc5153d9306d6f0d62ea6971361e56de852f74. 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/QZTPX2422629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8acf9bb87ca1bc94228894f1259e3998c1577caa5763d1dce20ae0bfce6cc0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTPX2422630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051ba03dc4e0122bca15acc4231f74f37a224b39119f42d99c7e97ffb787ac72. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTPX2422631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f68df6daab006dcece66327720dfa63d76e781ce4ecf5235c87bacd3a78be9. 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/QZTPX2422632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305a71037a3dfb377a938677ccef0594fba7a0da6d5eaa7ccb301be5bb746a98. 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/QZTPX2422633.