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 0xd5e81b61bb6bbda347b6faa31f554c857d66a38211527cd8cc878f306bfc8c15. 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/06cf317e-6d43-4463-a816-c6bb73835364.json and https://artists.proofprofile.net/proofs/artist/06cf317e-6d43-4463-a816-c6bb73835364.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 0x9c806da8c9ab141c879bc7a7504a71d1e644948bd92bea812db21edb4faec5cf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES5590601929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbef75a8210899139b04626a3a09308c7989ced9150a53b21a29cfa10e14b41. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5590601931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28c2ef5f7ab551bee368036fb5cf0859ac007a2e6b3d9a460ceb8327588494b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:31Z), 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/ES5590601933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46093242e61c1c6f8ac6b360824ee2fd031d4f57dd4e419907dd28a5ba2051bf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ES5590601935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b8f208ca0904f92a4bf52de0dd72d74204de593642d228d78c2a6b5feb5406. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ES5590601936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4fe8d0b03b0d72e321273272a2eddd23eac6fab2a15882919d51d6f7bfab99. 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/ES5590602135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e2e87c9863a3a59af74f283699f9ba0691167668ed3fca81e60758396ed674. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES5590602138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec24381986da3914d9731344ac5adc9628ca636905139806ed60e15c5031271f. 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/ES5590602140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f1f52d5f9f9dccde8eeb1704b27afbc34da2b1d97a4175595813d6b667464e. 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/ES5590603097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3bf3a16fd33cb26bd6ef8c2628bc5f0f6e6c7922275a6cee489b0c46b7f2ad. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5590603098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e21373434350e9208d16cec6659ddc4358512766feef0316ded0dfa3410e86. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5590603100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b049afe3a6a3722f68e0886c596159c2941e7d417ee93e70add491353c6218. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/ES5590603102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee57b644e597e61aa49d0cd1b75236c094291518d0a0a97b378bcb64a1eb9961. 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/ES5590603105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bf827758238a793c5397d08c17b4afb800340e227065110bde62d715e9a0fb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:36Z), 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/ES5590601937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f401912eca752f37a3fb6e76fe675b20f0d2ab3625779af3a9ef2e67010519. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5590601952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a015f5f9ab5d682f57a3a964137bdb95b120f30c317d0b3b9f352b154dd6604. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5590800750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8110752925cf351eaf7b597d5a6c42f54cff4764803807823dc955d8b915d6d0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ES5590800753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe713fe137b8f3b803cbb38064c178e15da16335455a53b72dbf1f5552989545e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ES5590800759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b2cd0a334173dacf569b76ead87b7272ff50e07f76f9fd8167f8f7cf6289d9. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/ES5590800760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ede2b8d29e70d8efc53a12d81b2b564c7bf2334ab8798fb51213d2ff70cb53. 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/ES5590602801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a603dc6dc95decca4b83c7bb88f7a6fa209efd974a557604d69140b9e217d2. 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/ES5590603110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf62bc28a3a43f1aa1913ec068b16eec87bd732ac6a156ba452a2d1f61505fd. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ES5590603112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f7caaca7e1dbc67c4d1d6be16554fec09afa44ade7d8f08de60cc4402b03cc. 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/ES5590601927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7cf7b19f9178958c4be162276a0852dd80c2a52caa3e2b592d46226baa02c7. 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/ES5591400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9871df834b69955561e122abc9b5985a24d7c8f735a9b5d91ad2b8ad0618eea. 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/ESA082050495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dccb87c9f4e614539f4d0f001b3b31ee06f8faf783287620b99327976c6ef76. 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/QZHN32406691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb740c3a15129e1097e16aed9a5c17d79d40a149b43b02305928dda8d5fc7c2be. 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/ESA012557362.