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 0x91007aa8e9d6a55ba90c0dde38c471d2a24592bddb45d3abe22496574541d638. 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/299d6a21-5009-44b7-acd9-f99e3351dd63.json and https://artists.proofprofile.net/proofs/artist/299d6a21-5009-44b7-acd9-f99e3351dd63.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 0x8831efbc8bcdaa67409496b01e3e94bd813ebb4848ce8cd13390e6c43dffa956. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:03:01Z), 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/FR96X1907090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4725a49380493e59d4cf9caaf002a8c2671a24c1d7911cd826cd6fbb52f3fa. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FR96X1907095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8799364655c874ec04a22f3b08605d96587d6c9e40a347c9d803927db39f84. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/FR96X1907098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f8f56f8d7109a59312703b7d9fe6240ca152784c86281c2a94dd185d472337. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/FR96X1907080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e3c21bd63f1f08e963c79d87ba5ed62f9a9859fe06f5f0e8b8c797ec8e8607. 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/FR96X1907085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ff847f7b293cbb0e10a1d6143919c1b3e664269649328891884a69445f959a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:59Z), 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/FR96X1907086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a3e6df122999660d2dc52f65e7235ec5eca7050cf46ddd524aa98bb27b7ffa. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:09:23Z), 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/FRX202154734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacf604506179a2870b4454a0618f69e117585fd631a699cac54992936662f14. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZN882175671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e877cbc7fff1004e36adb06b8de6dd233ff23f0b168a71e01f718b4224048e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZN882175672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeead68b5a39f771419c7a29867ef66dc4600079ca3203fedc0bd4b3224858c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:18:11Z), 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/QZN882175673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb885dd04ce040ed0b127916cc3d3d6bc9d0e949294f6eca623d517fc6ad5236. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:30Z), 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/QZN882175674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3795200733cd9a44cd5c60aecef6022737640f8cb1ac6948715d54c43e5849bc. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZN882175675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3306b14882e37502f7bc27b8da81d41a4e47abd9fe3339d690aa8109699380b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:05:09Z), 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/QZN882175676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3594872161ff54635a28954881bfe95f933d47fe88a82e4401c7ba2636ea6d4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:52Z), 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/QZN882175677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb555419dd1c87be91925f1874ba040e8673cf155f9f3be7422779b9a2ba05b20. 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/QZN882175678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563dfd760fc97775ba54e63a860d168bc7e627f390897af5b4c8f69c8f6ea066. 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/QZN882175679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3c214260e399c88edf51bfcecc5072b8b58e9543a6b1a306b06b17c875a691. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:41Z), 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/QZN882176239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a96065cef85af0445a2ccbeb128ad66f4b1dd63822f5befb0facf64dc92186. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZN882176246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d64c3a9ce292eb2e2f190c2263ba53c262fa77c1c553d013313abe5d690837e. 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/QZN882176257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a38aeaae51d3bc99614b9c66e18d295e7e068a07c217955d5868afab8f02f5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX202212051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41641454ff6e0f87ab93e12747b1aced73bd515af90ed25605553785a8a64534. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR59R1992157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd873d5cf32d1abd79955115dc707ada2eb2d0d84d4766b4a87ed0ac832860b. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/DGA0Q2385635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f376b44b678cf2e6e8f22ab8ea3b6110a616f90abc07b6c4173579020b0f6e1. 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/ESA122552666.