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 0x4748cfae57551daefc5bddb87de8f4a1083865fbb6d12084b5e956030f557319. 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/bea45f04-a55d-4089-8558-23874d69297a.json and https://artists.proofprofile.net/proofs/artist/bea45f04-a55d-4089-8558-23874d69297a.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 0xe40c77ab151b5c3770c0c464f19cb123e52d55c82971b45b6dacc45974b03e0d. 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/ATN269804109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bf9eef97ee6aca7b1daf61b5f0174ad055b90b8e1b33514e5722ec88b95fff. 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/ATN269907007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cab5caf3116e5ef83ba9480fa61c7e192d4ae3233344ecfaab2c906654620eb. 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/ATN269907010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b232660f5f5b241a05e8f5b3de4857d0b1b85c02662203efc7d18b81d08d5f8. 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/ATN260109507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcdc0cdb3ac18c77bc9dce476e9e2a769cd261ea5cf1c3fd91b719c6b892e9d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ATN260516809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb205b81dc0c98ba306e1ccabbdac66201dfb90fa7792489d11a507c87cbae1f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ATN260516802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4377ebc31b909ff0afdc24221b5f62276ee0e92444faa7194838e521679f7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ATN260516803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d5f5fbaee4c71cf16cab4d3bd5f1dacc19646e5414f3be653b79d9fc388089. 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/ATN260516804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116c43cc32ec889430b35ba5f1b6331e4b2e9e30dbd334f68034c4d708825530. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:23Z), 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/ATN260516805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d9fe07d7ba54cdf29563f4716e37a2304668c0dbe4df719a5781dbd65d4634. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ATN261034403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cef4790da0522b0943d62b4fb3e785eb355fd7b93591dec2ff34ea7e389674f. 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/ATN261034404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60bab9cb8ae83887307f6b7b8f7ecb10864f60e2819d347a195d1cdbb12f51b. 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/ATN261034405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b09ea130c241c13aa5e9f27bd702ebf37636d61d0e74143cb66f6beca603575. 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/ATN261034406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c46da87449eea1b3fd4601106769abdad79e3e870773be303f6357c83b3674. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/ATN261034407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f48b9bc3ba4fd2762ced4c2252e25ac9f71e8ba119b0cdcb676471845c68ef. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:24Z), 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/ATN261034408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33accc1aa1774a687cb2935a9a5c7f9eff38fd44d8d5d13409bd590d20bc37e. 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/ATN261034409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e685e85d65fd1ead23466c529a8d37bce9ca8dc45d585bb3bacc555dc2fb5b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:23:40Z), 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/ATN261034410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a641dbe2c2143c87589889b322de56d487763ea7a8b8e7f5f38fe067a19e5e. 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/ATN261348801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e479bbaabf72d2b340f2b4107b54a2444967d200fd6d386f0322e22e086a22d. 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/ATN261348802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe719c9508ce4dd852c859f237b90a221dc25238bd1d71eb5e18a2a17cace0410. 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/ATN261348803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf420f089897dd0ec4d85d055be0e6978b497e079aabb4a754c325a4bf9b3f1ba. 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/ATN261348804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe723bb50eae4f404360b59c82d2e3b8f84dc6d352820e4d196e37de7aae41cf8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ATN261348805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe6b0f66a9ed7f74f834d49544acc42693fab1d7d0a32fb477a68b17610c486. 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/ATN261348808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef821d2d4d08898a9693e47503f201aee3830ecded25215617e3e98e6388471. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:11Z), 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/ATN261348809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b7cf5a4466a73ce90ba7efc84a8813a38c69b41eed6fafee0b0b41902aec69. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:54Z), 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/ATN261348811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e269c6ae2bd688de149d8b9dcdffcc23cfa557e55a7971c228c0407a59cd25. 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/ATN260109510.