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 0x899d02948292c90fd8680c34359bd22bfd42f00b691947a7d0a572dae6da2d22. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/691cd8af-10f8-492b-85ff-4faad252ef10.json and https://artists.proofprofile.net/proofs/artist/691cd8af-10f8-492b-85ff-4faad252ef10.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 0x67e66bc3403eed045827156cd1aec24c02063116abd7e0c609cf67ce84a15104. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:14:33Z), 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/GBLFP2410103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214117dbbf6555c857542d165b4fd7c7f44a49ddadfcc327f4d82cace668c2bb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:26Z), 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/NL8RL2448315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2ef31c7cb4613492a1fcfa2709a18b982d85c21604dbbe48f36a552c0d23c7. 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/NL8RL2448319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2bdd68203984006285e0d0ee0a0b347a02294c16854a4da96982f40d510f1b. 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/NL8RL2448322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7c0e96713e8d9dd3f2177aedec646256623f9a2b857fd20a32d0c1fade03c2. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:27:34Z), 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/NL8RL2448332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbf3b674b7dc5934136ca6e88657c48f007401b1b3daa10b1c3432b9cee7935. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/NL8RL2530521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0937784c2308f003ba21f777fa08f85a5423cf664a476ea9a07c0135a9b8a26b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NL8RL2530522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7773ac6300e0aa9ddf6cd202ff3008155f3744c34524fe70877bd82c09bd87e4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:09:18Z), 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/NL8RL2530525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d3fd90f271a0337800a32d9695ebaaaa94dac2d78af7b83afb45d2071f6fdd. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/NL8RL2530526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118fb44bccc0c8eedcd5e57a9034d9dbe382cf1f98bda17543eeebdc473e17c9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NL8RL2530527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9758b32ce4da7574847a46b6ca826fd891c99be9bb99b33060d335c90cb82a. 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/NL8RL2530528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0266c62bdeaf4efaffdfc830a5e7b18ed429cdacc1f06b13f9195e53b06c2667. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NL8RL2530529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88ad424076a8bef185764a14a3d7ef11bf8ef66d2b005e1501f477905e3183b. 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/NL8RL2530530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da37570eb19f1e81a44de1b0e640351047c20bce48bce1ebc756761bfd2ba60. 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/NL8RL2530531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89e2e62cf59f3d19ae5e40d2b36bcf6f27705bc3faa391be0e40a59b57aad95. 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/NL8RL2530532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69901ab344f363698ea62a033c8247207d39bfe3b8f2db784fa07b0423040ebd. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/NL8RL2530533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ef88fb6bad07314f1ae000cffe3214f57ace9a031704815d04e8016f06f5ed. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NL8RL2530534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3d13cea3ee8764c571f7f60934ca1ff73be0b4459970a5418772ab56e3a56e. 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/NL8RL2530535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41621171f54120daff5c28676146ca746348129196ff726769ec20ed996153f1. 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/NL8RL2530536.