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 0x2bd802f83c1bf0d94a443df1a3e7bdfff7c15a45b8c8c471f5507dc20e270b0a. 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/0e38d299-0297-4030-8692-b224279fa77d.json and https://artists.proofprofile.net/proofs/artist/0e38d299-0297-4030-8692-b224279fa77d.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 0x6ab07e68a29a91dd8a563985cbe5a557d70068fcf041889e09734bc44d72ea00. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GX6KC2401448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681671f5ef75b809e40575c79ef3a4492c870ac4002eb60535a0ede806078bad. 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/GX6KC2401473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697396962fcb66f07b5b2578f999f1a557cccc425ea2e6e6ec5dfe292a27cbe3. 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/GX6KC2401485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7295cc72147ee2c66c0978aa8d6f8f2ad47535162b692a346701425a15ea81d. 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/GX6KC2401540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9579edc8dbd32f2db4465d662fa297afb8b578302b1b525e7a7f98e4531a4423. 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/GX6KC2401652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea412bbda21311e428d92db5c6503205a75f646107e8871a1b0011f0d082107b. 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/GX6KC2401654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883329e78a05b665057fc34659b1630c6a5bddee44a83baf9efe9ffdcd05d527. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX6KC2401674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa43d819c01fec603893b2ce88a28c4a5c7c08f161cd41a7da224c70bf01fc1e. 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/GX6KC2401690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f544670dece2526f13cf32b817e7db4cf04b0ab38ab7713c7bd1bf01d5b14ae. 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/GX6KC2401771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06b7b1c1debce1ec8de41a96e0d14a3ba8915207c110f7c562e7e299127088d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZPZC2450591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53ccefb06a8223e681b3d7e27bd86e813677354ddf26514212dc7fccc497d2e. 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/QZPZC2450674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502117e71d9da964945496b45a247d436a670463b5cacacada1e79685bb13bb5. 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/QZPZC2450595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d1ddb277fab2a527f90ae88edc660a6ab90875ec7f6f629239c5bfd7b846c5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZPZC2450596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3856c9b08c55ae32324b8e43989db295ea746c0deab0ca6edb688ff125825c6. 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/QZPZC2450597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12de22f640414ccc9bd3700db9ffe1b9f6a987faa913f5324e954e84e369779. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZPZC2450616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3ac1f67b82e4a041da51e023ec95d7079bba1efa5f15e0ab02e30102890603. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZPZC2450607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d6a62607d2ac3484f62a489282ef5e3bd5e964281ff57e91bebdddc9f4733a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZPZC2450611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6643a403b121a9d6aafe0921e47f668dc216a2d19d6dc099f209948b9c31516c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:33:59Z), 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/QZPZC2450725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129ba3ef4c407dfd064fb9e54b5420c30672fda9b9939262e2392d1efd88b3ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZPZC2450797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c517589a90244d063cd330948cf8f5501b24643d32e17c7ebfce1b567d3ebce. 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/QZPZC2450807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feada22c6f1f6bf682e389d5ed13800df22b2e0b0cf0f8be48bdaba04dfdc12. 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/QZPZC2450809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0facd7d4664f57c6cc6bc46604d41743f23d396d4f56ca514764c294286a3c75. 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/QZPZC2450875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebf3a5309ed9b583ed0ef79254f6d643e6dfa42411f1ae7a3919766a6f60a8b. 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/QZPZC2450916.