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 0xa7497c9a5770afcfee7b9dde2552ba7fd1db2b838d2138f90be5e3cdf8304f21. 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/2b5235fa-51f1-4d69-9043-2c5ee6ad098e.json and https://artists.proofprofile.net/proofs/artist/2b5235fa-51f1-4d69-9043-2c5ee6ad098e.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 0xb06f39c9c48322ca1af9ab4dd518b76dfbbd0b2e7684c21457bdb5df90cd847e. 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/AUJGI1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98479b04c60a4a7cc9aac44e5f3bf99a1d48b708892305edbcad37ebdbea218. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/AUTEL1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c85ace0308f94eea669e4ce0bca2723abc950ed7af66b84f8b010ac5f3fba9a. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:09:56Z), 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/AUTEL1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877f205838e0b21ea75242f09fb478f00e68483b2fa2cfaee0a42f4df15e1ba3. 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/AUTEL1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c01fb2b0312e54dffc6f914c4925cbdaf134aeaf45a138bf02ca460c2dacf. 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/FRS182014696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d26ff7b9a2bfb97d9832bb12bf44dbbcc3f3c9d59664686fb02cc093f9be06. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FR59R2101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edc4894f3760bed3f0ce4ec65e4cfe559ff45517b924a5363dfdea6fa3d5071. 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/FRX872204822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f7e504a48e09ab7fc09246a6a6aa06e2883a8469157c6fa35818ff2c61b645. 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/FRX872204823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbd734dbba4b7d7c1feeb009cf86c773aa4cb99b3829f8aa57e4b4fb8a802b7. 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/FRX872204826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999ee30e2aaa82eff3e6d4c65791a6bb75e389f1b46eb797f1d8e87256753644. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:29:43Z), 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/FRX872204827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe102fdbdd51c77f1cfcaa78cc99a103343bb7716f070b732d129479402e46011. 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/FR10S2445232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29efabb890c470706627179bfdfc19716a3814c783360aac069936eeed34f10c. 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/FR10S2445234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc913ce88116629830ad42c0c2f43b67e8d100daca6d4faf39c8297a5142f8eab. 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/FR10S2445233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a32d11c65af956bdb8d6d1d4cfc051ff660cf1db5c342b189e03716823ce42. 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/FR10S2445235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c01fb2b0312e54dffc6f914c4925cbdaf134aeaf45a138bf02ca460c2dacf. 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/FRS182014696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974008fbf5349ad8a46b0ce43133fc555ec1c2129e58a5eb36749b1d2b201b9b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FRX762125195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c461ce12103428bfb2198c008438cdc2ab413d74cf896322fb2db4d50f9311. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/FR10S2445236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6322ebcde9cca3ad5d3811021ec0aab5cc306d58f5bc3da4933a62ffdda0c00c. 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/FRX282598976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c6d7d7c37def536471184043967b6add63afb5c05e4103d22bb730100bc596. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:53Z), 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/FRX202545447.