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 0x28cdc879f085b16008c57b07e85a0092a0afac413b40fa1f21c54eddde23229a. 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/236ae7b5-d605-4994-9d35-e7100f6aee06.json and https://artists.proofprofile.net/proofs/artist/236ae7b5-d605-4994-9d35-e7100f6aee06.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 0x0726260db9ec30ccfa6ca58050f2a076bd0dfabaa70d2df110cea311846d87df. 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/QZTAS2489629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f23895f9129b1d45ea7f961cac6b634ae0eb7bf15ac996c5108aa0e73e2aa8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCJPA2444292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5984d5f483fce74df03500b246eba9be5934cb0af9c5f966637079a153df852d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCJPA2422517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a8635e3a41ec5b9b63af72257bfb49d3feec26761c65d2059221e5771d5809. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCJPZ2460761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0c062fe2e73f6ab8107952c97c54ee8465659d3ec725fe1b8cddb3fcd72315. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES52491000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f55573e512f751c833cdfa8faf20107c8ae5a4172e9b463d48eec2ff7ac571d. 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/TCJPY2492263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6034fc4e83e0bc999b4b1d87b5bbb80439add9cf07415becdcb2d38374d12e9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012293215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373d8f74def6546fc895995fa51df9781197ef56d57099d576525a9f6ce74c95. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWFG2329302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b375a90d80eae3eb3d2407615213cd3e1b1f707c305afaa19a429a94188e53c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTBA2362797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1908bd52c630cf48e162a1cf0452be35417a72828cf690f80ad2044110a0f8a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAHL2393841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f8ebc531a412c41ce1639438483c88415938220e2603b361cfbec3b0030dbf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAT2303323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277c860cfc22923347b9c0e7fd9bc901f2276d2f8ccd98c607e12da8b5cd1679. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWY2366584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07613347ca082de9583ac6a9b8747ff2fdeae6d14c9379680c5453149c72c5c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCJPW2357462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0071cf8312a45d11537aa4f0bae999c5e9b06257ee40455858355b8be2ede2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCJPW2333122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089a0082aed831afdd65c0b50fbbe2ce92c0e3e42af5da5c7b0420837157c24d. 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/TCJPV2386843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d2a675ea2a37d4a38351655306f5768c191f70aaf589f3d27d4f57e33fb304. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPV2316690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd7e8026a58c598cb82f2a6dfcb030675b0ffc4d9d70e27947e5febb6bd165b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPV2336036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d71cb79f5b30a0342a771a892e725d6a5a0f56ecc3dd615b593b90e6d0c2ab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPU2397826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53627c79693ade36aac12b844acdbf1a0b8c12ebf6b0eb88ae0c4839fcdc8d0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPU2344778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da925065176ba7e8dace696e84fb33c58460d6c69ec13f03ba26e49a11956a0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCJPT2298939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31b08d4d9559cdefdde280be24e5e65ccf4033d2d7f1422fb0d8a8026266e28. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPT2296292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652609573843617f279354de600dc4167beaaf5e37809f21ecdb0a0b0a1d1f90. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPT2277819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f90c579ce171fa7a2949f25db083f8ab9a6146ffcf26fce5412740cf5aa3a6e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCJPT2268618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc61f5b905b2ca3bd1e13626e1414e9d846d954fcddcaa0b231027fe38382dc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPT2256778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c9dc38d5298137ec1a0f532300a734148087c5d24bffcc2d5c2149490798e2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPT2215413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85fec3f81e72e7ce5d2292f2a85b7f29068013d0b446165ba61fe268fae7dc4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCJPS2275990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6e6ca51478475ef91faf52d9071de2f9184d8ef6f5cf6f5847007bb1bab56f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUBEC2207169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab713be174fc63aeab8db19ee638a980b1b874a8a75ad55e356e907758998a9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPS2245248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad73ec2cf9844f3d4b80372b3c74e34fc1b769904d8652012ca27cc365a1314. 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/TCJPS2218136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab06b25147826a37fd23c203e39d77735ad067cc5e6961c8077bd5c753738be4. 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/TCJPS2295554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a7ff28929afe27ca48b3476d9bb680b669ef273bf67c7d8eafc624e7aaa4d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPR2261965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ddd5083c6a7a59bc7f869022169ed04fdfaff16e3b81412432760e7439b536. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPR2261962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfb86420331a929b48fe610f505b34f74f632f2a8d0a985adc5672ce4ddf559. 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/TCJPR2256549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1d3dac74d8374ddcd7517bfe5a24bb0ca2507f8f0570647908a9cc88f5f2de. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPR2231703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dede414bafdd9b33b7015a0d6ca21bfa3d40e5cf78dd13304a5b9fddce68b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUBEC2172934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28b75f15dd005c1af92ae76d0692fc4070e30288c929289f64cd950d43264cb. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TCJPQ2299580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3a85adcda673d26e50bf79bd4824d93f91b7592ab027736453ffeffe2e9ba6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPQ2289862.