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 0x28e2027978737f6c6b7bbf4083c7b7195245b19d360d66ef4ddd5472f2439b10. 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/e7dabe24-f658-404e-b8ef-ece23438f23c.json and https://artists.proofprofile.net/proofs/artist/e7dabe24-f658-404e-b8ef-ece23438f23c.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 0x4a2b5ed61683eb9ed8ce70775699fa6cfd8c26759790a1117c841ffd749ef644. 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/DEPI82202125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4de8c538a5f7a3db5c5221a22a04e64dea0d7cbbaca53f622f8e1e9c5b8653a. 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/DEPI82202403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140e2dca6d5d3bb635250f001bca327b2e7690efbe30513c4fffac0461554b8b. 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/DEPI82206379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38934cc7c51c39553827561eaab1d4687fb2bf0cab42b82e9283ad952a3bfb2. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEPI82211186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa230db0479b79d2d6fb9a34fe2b98fc92f364f2d2430c56974901898a618934. 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/DEPI82212873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06282d444e143b71db0d1d9867ab0993767cb7a0269a01b5586208b21a6787c3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:06:59Z), 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/DEPI82216151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549f200dd36b5bf1e19f8f32956ae507e10af137b5437aa627f18a6001627ca. 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/DEPI82301525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0f8795eeb8209194e2556a65237d23e45bee75d730390960660e3f2a254fc1. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEPI82304489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b875f995aa3caaba8540a7ca4e4e1174414bd2534be3db82547728252f1bc0. 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/DEPI82307624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7cac0d6ce1202b494018079e62b6d5ba83baeb9154fb3138c4e6b31476da03. 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/DEPI82308229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc251697d06fd4da613fabce22f82ba0fc114a28616a37cc3c04fece5784d88e. 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/QM7282500618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677456124117bcc899f044f5f0dd76229931b8a49ba45213f75fabd7a55298eb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEPI82311456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c635ad5c2999eda4d5d0c47780211b9ef67ebbd92b0aabd0bf26aa3378fcbc9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEPI82318815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf458ff859cd315aa8ff31a6c55eaefc4894267a57b03e9da395b12ba2626b58. 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/DEPI82320508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ca7c2abb3cac7815387e2446c0610bc860e252c223c51fe23b3311b354656b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:04:07Z), 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/DEPI82320515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677456124117bcc899f044f5f0dd76229931b8a49ba45213f75fabd7a55298eb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:08Z), 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/DEPI82311456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e993964ca9b544fa17ba40fc648fea5b7c4318bb3e50d003248109395d302. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DEPI82320520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c635ad5c2999eda4d5d0c47780211b9ef67ebbd92b0aabd0bf26aa3378fcbc9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEPI82318815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57344e0c6565d49feaf018628cc7b2c871ebea029d7efcd82948d6d4ac72ebb. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:55:16Z), 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/DEPI82320525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8701cc53345a1ce512c326bc26a6b40d0478050ed44ca83de5e44c002a7ef62b. 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/DEPI82321507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd053cbd086500e1fe6e6139fb1d0e7aba827ba945a054491db4345c71b1987. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEPI82320518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12df560140b340a9215c897d91882d2ddd69026d53a1b053c08db783a5bcb03. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEPI82320522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ca236637fd445ecd2976a05bacf387c94d018c271054dfabd82eb0dfec7f51. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/DEPI82322092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f62d0929497c1c80e740da53dc7c4b332e6cc17b83b4288c7b8588e856678f. 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/DEPI82322094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9651c42a7d6a471394fc91aed6522926be11a78915044f2fa501daa034834a48. 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/DEPI82324434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8754bb307ccafcc895f3c5bc7b66302ebd9ce74572e62d2554c24a4a46de7e66. 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/DEPI82411710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab385e1fcec2a82610d3bb4691d012c76487bb1c7e76f231b829f635ff4ea8a. 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/DEPI82431471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb4fed4c08117b04ebce588c919b4dbef124339e94343458bc868b4c0dc2ebe. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:53:35Z), 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/DEPI82449625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab385e1fcec2a82610d3bb4691d012c76487bb1c7e76f231b829f635ff4ea8a. 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/DEPI82431471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2008fe7dd70fb617bfe9dedecae1ec0cfc7f75680a26e36b1f09c5c06da4d6a. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:37:57Z), 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/DEPI82449627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdcc2a2c734b62db4b2bc2b705d43c8eb3905e6fe4e1ad9c4b9a9cc030648b9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEPI82449628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aac81f2da4f9384fd570cd3fabd6daaeff6097f3e48c3b101aa8d8b76f1346. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/DEPI82449634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f76b76ec2aeea178a11a9bb22619d0f7c517ed01b3a41bfe2fb525abe7c6ae. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEPI82449635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b4370af5e47fab17db0e312319924a8c3de0b28f37979901d2af576f6d8025. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DEPI82449636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3a6cd6e2a4276d79350c35ed0d0d302322c112e8d6efb9d7c0102d1f2bf444. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEPI82454079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf477e4eff7ad057b2e0ced911c6995544b3f25d3c07978307b98fa9b575c1111. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEPI82556769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fefdb2182aa243947aa40923bd99107c5836bb8adfc033aae9a4647664fc60. 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/QMFMF2523050.