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 0x21caba21a6d22f8ba69d36b9934393ce22bc85d4136c4e547efbb7c35af325a7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65f42753-77ee-4ac5-b406-f441c68b367c.json and https://artists.proofprofile.net/proofs/artist/65f42753-77ee-4ac5-b406-f441c68b367c.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 0x8962cc2bc58fdb0fd32e5491cf6304f3011305f4d12f7a260ba37181d200b3e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:33:40Z), 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/QZN882250069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5874526bb1047c437050ab83bfc27208713a60e61239066180718f26114e6842. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SKP592300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21110d27666829400c70b9f7ba93a7ca665f956af86edc833340739e2175ec38. 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/USDHM2210713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb735a83a92ff0f3a094a3d04502eccbe692d1aea6ad05d367910927c8ac3e57. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USDHM2210719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bddb727dc4c33d42c960af08e597b01d4f1c213f3d07f7cdcd44ff06b35ef7f. 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/USDHM2210722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda80e3fbecfaae4d869415edd86ea743ac27dd05f30b31c74fea060309f72f4c. 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/USDHM2210724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c513430018a4e87e17b3b2669f0986af3fa6f19196a7fd026f50274e26be41c. 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/USDHM2210726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e207482115e45f27fe4c1af519c698611233a9d62fff00ef2070023b6c348a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDHM2210727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bba85610d7ebf4372e83fcdc9bee9ed129739de11b5967236d170172ac70842. 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/USDHM2210728.
Zmes Hitov - Toto Sme Tu Ešte Nemali ...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44818e3a5378ba779ba43a357fdc52329a31fadca8eb5d495b4c3204681570bc. 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/QZYFZ2439454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fa71068768370f659f8cd31716e40518bea5dcd5ad228c3a4f2b5ab3e5ffcc. 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/QZYFZ2439446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1736f09c138fc0e304c0a64b6dcc18db8b1fd5438f1fe38721daccef30ae3eb9. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:11:19Z), 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/QZYFZ2439447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426a90b960ca2774d397d2ce438523fe039c46b7fbba6e389eaa83d66ad63ce7. 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/QZYFZ2439449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcd2665fad0d7a5749a155186aafa230e834b743d045f24ba12b4f24509aa61. 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/QZYFZ2439451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940148ef53e9757aa23f72054cd22e38979321a129a904e2fa89050fa9f2daf0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZYFZ2439455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e691f946d1d0a265ff82973461f41630e80bea5573e3cbffd50828d514315ff. 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/QZYFZ2439456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc12b8e549ad69f1615ab7ad9b636faec4e2c2cb1404f049f94dc349d95f270. 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/QZN882521248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7264bbfca0e1104c9cec8ff4bcb71f930efa9a1b8916cd0114e4fc5025d8d480. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZN882541083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf970538717807fab785ef6477e02733f0d968853bd4050beb04cb1a99251bf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWDW2568092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e278e796bd2f06931a2b008c7efd69b6db4bbd1556bf3edb999a904bb688d9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZYFZ2506758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4956544dbcdfeb4f1afeed459b2634596f355172507bbfea51b1016a082aea1b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZYFZ2521729.