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 0x023a23f3adfd906812c461af0304d9f767dd64471b24560fbcd55080ea8f25e9. 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/0a367847-b200-4292-9bd6-c74654e0ee89.json and https://artists.proofprofile.net/proofs/artist/0a367847-b200-4292-9bd6-c74654e0ee89.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 0xf172fdb81f2767adec9e178ccc6089442b63a2bf363b04f5183cd2f1313c505c. 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/TCAEJ1946077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153ce12580fd91179b72ac005956acf880605b8f9afcfefcd539d84e6d3f7940. 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/QZHN71959363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf474b9012df73fdf54f5479bdf1164d99ee6153a5d224a060c96963741e34799. 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/TCAFQ2119294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde4bfb09babc52591c737318370f7433a622ce4e4d36cb4ebd701840224356a. 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/FR59R2242543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc7e2db06e23f5b70485582d0057802a5b53916e4275c42d39c1263a390093b. 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/FRX452381766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7297b29cfd44f44194e68d5eb89ba4f55dbd56baf40ab65e5e0208bf725690cf. 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/FRX452381767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09973e57fa6fc1481bf0067288384a6e98d96d2ec9dd2f335df93122a0a11984. 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/FRX452381768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988589a038b48a7b956cd55b54c61f1ea87cca7f0b097c4f305bf2c5f12797fc. 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/FRX872234948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3164e665bb40f5665e20e910601d09056c6cc7b57abdf858c51840f8c54b192. 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/FRX452381769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f84171f19e109f1e9cf1e9765d3e72bac074383dd2e265f43302bd0d4639aef. 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/FRX452205046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94826f4a98f30154f5de29d12793d095a873b66b73482f80d065c977f4534171. 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/FRX452381770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23966432d011b550ace5f4d56dc6ccf2a15f7f1526c734586cefed859d12098. 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/DGA092224725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89af4ef8f33a97cfc5234ac01975391b5cbbe20aaba56313e807d134008c1193. 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/FRX452381771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58682cbc4d10565ce3b3827794b1128c1cca5b2cecc3389b052fe03a22596b9. 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/FRX452381772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad64a0682b788bed2d0c1850a7a9a3d90009253247363f9e181fdac9bf021f78. 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/FRX452381773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630748e94650f81dafe61fdf76f3725b1b4d6544dc6ea8d6f2aa8cab936b5bcc. 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/FRX452381774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b02590b82f507c80c86bed2d0eb8fc7efd3ca24ae888592413d82741f47a6b4. 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/FRX452381775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095a77e077f6723b2a6ebae0a19c87e3181eeb96398c16dbab8ae071ab719b2c. 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/FRX452381776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35746fbdde8e0169914dbe109183edee9e58c34e674fa16ee2f41e33e2c5181. 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/FRX452381777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7433599b0aaa7c3cd8193d526b0623085420b692c38e108cfca32ea11eae207. 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/FRX202302732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f126598cdc85670d3d7bf35d43e8b5fadd99d2378236e323435d1d36308e5e. 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/FRX452381778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5c07119809d38f6150796f179fe2fc73386b36508809e8bed59459f09db368. 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/FRX452381779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf176d9d05b6a2561cb0455bb0dc753352611c10b22e84906cecba34cdbe7d14a. 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/DGA052252685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b149937068d9dd3a1efed379ac9404b848d7d62a188c75df868e8e598f104cb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:10Z), 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/DGA0H2302773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb423f41d54d49ddb02b499e310697f2a501d2ba819b04e1242be022c5734f29e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:12Z), 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/FRX872478086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1e6e49aeb1a38ddf4d99acb8d79a7996159b0cee44b0aae68a6ac0f8572108. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX872478088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6256f8e8bba51bc52576688e7b1c3c44c75a0579f9fbbbd0c3b0e8b85de4861f. 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/FRX872478089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c6b4dc0e315eb1d5ce0df93ec8efcfc168674de7308406861a1bba6d5715c. 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/FRX872478090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041e549ee3a21bffeae391631ddca31382280bd37850ece6746d372ca3ba4146. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX872382071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf3486b04d4871c6a9c87d4894221bf5a97c20e387366d440f31febef1b544a. 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/FR59R2350228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d5f71c652375fcf9762f57ff1b8b1e9e2b1383d6afed53e475e612fc1b9d64. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FRX452480136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c96614e72ad8828db51ed024a9d16c35a2a1998525fa682a2d360049d17f097. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA0M2458997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cb2aa57822e0f1a1f1ad26e067c5e7e181e6dfaa3056847274e8de3784d4a7. 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/FRX452226675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cb2aa57822e0f1a1f1ad26e067c5e7e181e6dfaa3056847274e8de3784d4a7. 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/FRX452226675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1581ec98a94c08fe7fe5c74ecc4ed83871b9da126cb4629889e0906871611fb0. 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/FRX452340776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf176d9d05b6a2561cb0455bb0dc753352611c10b22e84906cecba34cdbe7d14a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA052252685.