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 0xc189c43e2705b70754515209a147c14a3c4033d40ed17c48516708f968929159. 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/6855b562-6464-4ad2-91ff-db1cba1f9de8.json and https://artists.proofprofile.net/proofs/artist/6855b562-6464-4ad2-91ff-db1cba1f9de8.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 0xfd75d030e5827f201111aaa27cc87aac8c95b578cdf31232f0d7c33018e90e91. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:31:31Z), 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/QZHZ52043826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6d68deae3f88564f14dbf2c9ac4196c2d9149170177ebb4e498ee0d39ed367. 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/QZHZ32055705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b04ec0ca2898dbf42e9f5bced88dd614a7c0673901f1ff1730bac786c56a5c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:21:50Z), 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/SE62M2123124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374aea820aef68ac1faf1418c859801ed5c9a894689e3f9d6c51fe47c61a35e8. 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/SE62M2123125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020e4948215a927ad5d5f27200312110806779ad059b4b5cddf90c1e188a7c53. 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/SE62M2123129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dabffcfbacb9ba926157b9df63c94437dad62dce0634345643355f60e61b3e1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE6XW2160519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759580c3760b61cd4ae50395f2dbfd72f47e5222ccc2fae96a0b594efbcdb86c. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:51:58Z), 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/SE6XW2160520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde30045125f95e750a7d978ef690b1fce01788fb574da317e9466246b769d951. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:34:03Z), 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/SE6XW2160522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb4c4d3a3ee57345a88dccbc615180a2a04a4fd0e001203b171a95fd82a685. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE6XW2160523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0fe6c3ab47e35a3721e0c7f1a43b09fc6957b5f8f807e939447e3826325ce0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:50Z), 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/SE6XW2160524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1d0deb54fa83ab0ee35f69997e5bb5acba3d1f76546ffa95cf3581296d1a06. 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/SE6XW2160525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083cd5e14f83fa8a02de308ccd8a9440f95bfd2d2218d02e4aa657b8917dce43. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:40Z), 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/SE6XW2160526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d11c3a2baa4d20d2b5f91e32616d7dd6e02849d21a95d63cf81786e254b6c8. 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/SE6XW2160534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd921ad86f0e3665476921a84ba951503f30d86931b54ca1983fcbfaa57e476f3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE6XW2160538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad042dd68047f48040d14234848f6be8934da04396a3828470468ed34f7edf33. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6XW2160540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535365df3ce85200c8b5d793b04bcbfabcb5cc104a1f313288b8943a640b7ed2. 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/SE6XW2160542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5984a840ef564614430170802c3346390af3b11828e510709ae84bcc7d5dca8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZTPX2247115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1a0aed555bf7a3ef068111538e4368a5247c00b0f239c7227b41d93ad6b3cb. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/SE6SA2229187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04f3693b341c1f103723e58aa16df3f3c89b8650c09d7491dec854c15bfab09. 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/TCAHF2371979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f176ee12f5ee46eeef7c90eea30f9e2dd4c251d70586048fe608ad8ea67ce1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIB2449467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4df43a1fbeecd07e05ff65d39a48b7b83a98baf6f3b2331d902454597b76ff. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCAID2433864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cc76e1cff75db01725d4fc9d54776c2471f2ffa7eec2bbaa16e2b841d0b0c2. 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/TCAIE2433952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7f21519f6b9006a4a435953fde16d4d007b6d68d61be5d0526a8190fc18e25. 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/TCAID2433957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8807e0fc779e9fe92585fd6ea7ae9c4b29e8a77c828026c5e660e3434a33500f. 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/TCAIE2433960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b51225ed6e8a3a98d960029844492616976736d38c679777f82dc0f7542ff8c. 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/TCAID2433964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dbdecf761cdbf9afa0419439c341a96160318c31a720f44c3d07e733e56220. 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/TCAID2433976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f77250f46d6d4e7b6e4262d616cc01c898b2d2686985927abc55799d1abc56. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAJC2475556.