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 0x50d56567bcd3ea1f98ecf2f02febe8815741fcea2885cdd8ecb98c43c0f8405b. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8b728d5-268c-456c-9010-71b774e90fdf.json and https://artists.proofprofile.net/proofs/artist/e8b728d5-268c-456c-9010-71b774e90fdf.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 0xe1d8ace086dee3bd3ddd716f246ca8476af089941fef7cb6e1ef4ae95198e8cf. 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/DEZN82498152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0228cb670e9ea19a66671fc37ce047163a4969a1c7c72d0803232f491a8380. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZN82498149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4137aa973594c9830fd1807e08b7678212a9e8e89a0e8a4f71e07ed904429490. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEZN82498082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5e8abfb333eb16dbad7ed00f23a2d0c04881879889f7d4d1bddf2dc3e91b7. 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/DEZN82498157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fab8e7afa4ad5e73c66c8d795ca9a24f0019e20b003564ac716b88427d0016. 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/DEZN82498122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc0c466ca41f80f33f3973ec78607ec5cf99f02937acb0fef9fbae43ce8b321. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:28:34Z), 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/DEZN82498086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab285f05b4035896b5d24556fdabf893c76443bfe1e35d7a188067e194f9b9b. 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/DEZN82498078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2921565873e52d10598d1d796d53e3b9879a304cee54cca59e8f7c79ecc553d. 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/DEZN82498147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051f60a9253d56850cfb00fd612794e55be383c3c1ae911c84fcbb03f1662d4e. 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/DEZN82498109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521f571dcca3b7a34ff1c0db398af09e48a1ac9d97bd7c3f7e2b68f3e94429de. 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/DEZN82498146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd12e19faac67e4e4e1abaee6f2048e62efcd19a9bb50c470d96a6b5be410f16. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DEZN82498113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dac4cbe4af34ad39dec618d8288ce895fde5cb7b0b77b86e087cc406369244. 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/DEZN82498150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8f492a885b79153a9dfd5a0b7e05f6c55b48fbeb4e875d514063b409a6a385. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEZN82498117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bdf3a83a03bf5e07fd937f21728b669fa0d779709a3debf9b0363bcd7aa570. 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/DEZN82498114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8735b4bbc09f3233cb390d86eccbefadec9724b96ebc5c7b1355e9ee1857c404. 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/DEZN82498116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ddb5b1a7015ccdf532a32fc0fc1e58d4c6e5939199483d462399f67d335a48. 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/DEZN82498085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3368b855360e2f5145f98689573a1129d26b3eb509fe4767bc9f0a71fb76fa67. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEZN82498130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd425e6c1d9fd0e0c8302c9c5c7dfedb2be835924270b7f15133cb5798da121a8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEZN82498128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b269aff1d2270f242eb9069c344a0bce5a801d994704dfb6fc22908499ee88. 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/DEZN82498108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1087a9d3402c868d13e94c763cbcc0dd53758ad048f94ef1ec51154776f581. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZN82498081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05065d0759b81fb4d36c6c935e104c2ed6d739f991dab2b9ffb6eedb5e334a4. 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/DEZN82498079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ff307000b70fbd512f7bcb6a84943db561842cadc8dd7afb5ddfc275346714. 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/DEZN82498129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ae97f442b124d23f9690dfc6f41fdb2f43c2d4a85c03c0be55e9f5d29673bf. 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/DEZN82498120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907bb5de6cf7e8654635e987934b7a36e75a7dfb401730c602ad8558c8595457. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEZN82498088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2404c1ecd134d0e0d9a7edcc11fa20b28d177941fc7a179d25deb729b02d2eb. 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/DEZN82498089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44176b0f778ffa9d5aced387d36101482af79af33820b3965091409e5e2556af. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:22Z), 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/DEZN82498112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5854d7929214fa801ae25522a295328350c868b4c5e616a763c80cebeb46a7. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZN82498111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb0449de0e73a3029c523bc35f814655bb0b655629e55ed1ae57333fa872e94. 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/DEZN82498080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd21c745069e414c58411a96ce11c0c409f540949b4782c88c30e9439d7b2be. 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/DEZN82498126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aaf14a8eea7d1cfa2677c6217a5de42dc13769beed9202631fdec426145d81. 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/DEZN82498115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb389606940e5e721a2ac9e340b67df429f465a8391a226907551ee1a6aaf432. 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/DEZN82498091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e882291b9d2f8c2531d7f6058882d6802652e749cb83e4b57d08a2411cc4d4. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/DEZN82498156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84e8825f22c3c29a602012d6be2eb00f301df63e54958decf7598409c1d5558. 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/DEZN82498154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9644cb53a612f2efbbd70ec65af95e2251ef729ef32b6f2302d370f82187b3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZN82498148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691152151987137e889912da6be6e4cd20e7a1dbcb273c89fdf012611d262043. 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/DEZN82498118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba96e95ec1b78c5c7ca41a41f818fa8d2ae62e1859c9c388394ac4c02eca102. 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/DEZN82498087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e16fefe5a9bfa56bf4a640d02494e8fa9d28226061ce4cd34bb3c2c51d4dc21. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEZN82498125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14ea8e636fd2a2a9b5753f37342a3206b6a41722f8e56cf1ca4ad3171d81da6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZN82498119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94bda31ce88897bb89e3605af0db90145ac0a7b8f107dee6f95861ccbfa1ce9. 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/DEZN82498155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6886bde84079ffea8065cd4f75510eb01ff4644062f7af522d872c10d7f5699. 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/DEZN82498127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88706a6356c393c4fd9061d11430ebad40e4cc1a814b382d7254d9d51e625688. 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/DEZN82498083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380b888926e16d3e906cf9519f072a37d087b3e02d490be481f1248eece54fe7. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/DEZN82498124.