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 0xb0c3e8a1ee86d1a134e181b1ea0ae5c77b430cea3dea95082f6ec5d6ad886dc8. 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/64600074-81e0-4304-8ea6-3128dc358ce0.json and https://artists.proofprofile.net/proofs/artist/64600074-81e0-4304-8ea6-3128dc358ce0.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 0xa333c912cb5889832732e1000181971d44c2c29ab57f2eb96d90b014821f0f8c. 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/TCAHM2319561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910a3285426b0bd34bc0268054dc2eebeac2d95027d0b8a46c366a5a20e6a78. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:57:06Z), 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/TCAHQ2323549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2278432caf848c90529640b25bb356b1fccd943ef25068f797264e108c6f0133. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHQ2323579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87e052c89b8e93af4d10ed943a0af465084f61be7f7b36e7d0b8e5891ed0c33. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHU2466233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491ff75ccee993d980fb1ae70b9d757702366cb2d0f337cd83fb33bbc4b5d9a0. 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/TCAHU2466147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ec4d2fd0b81adf47402df6004b9b04eb1bfb306f1c13355f7d382361f54ad7. 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/TCAHX2456707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba04788f6cd113dd6933a8b6b52e1036491c9f450443bdca934abef8a327ff1f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:05:50Z), 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/TCAID2464259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb2708e9b8a10d5bdb23cbfe10d9b3c0c57a16abeda2a029a685b4a24d4ef37. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAID2464356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a2315b3fc0b8f82be99ce22a7a613339601d53d726c208f4b09d77fdeca268. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAIC2408752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4d072f083004e0975cb385a94a02ad03ec6a94be4fb4a3caf4986266360de7. 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/TCAID2408682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96931b5e9afb874002453643ff532fedea5a611855d6c31ee824d42e9323c53. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BK4DA2416981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9953189e2efa9e2d8ff199d0c2d914ccbeb5c1869b38c4c7c82e2c52df9cc171. 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/BK4DA2427052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdba8431ea25a24fdca98d512b1323582c3ff5677209eca8e97826b56f0637c9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:58Z), 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/BK4DA2427053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf922af33334cc8d1661fe4193246521edcf516afc70d600a4aec1a5141753f96. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:39Z), 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/BK4DA2427055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853846f23a58594565d791aa270a1321266570a5cb99fc0ef03a4de7111ec166. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BK4DA2427056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b89b6e903234a484bb68f4e07390bdfb58534006b19188ce697b5fe6554f705. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BK4DA2427057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f92fe68d4a66761ed868cbfdfd365275aab72274e1f53637e413af1ad4c63f. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/BK4DA2436709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf791edb75945421ae9ba7f8ff378b0600d1321481848f9e09f01b1265f42d1bc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJX2576107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3f0cc0bb611b16e7648adc13f7a621b23cc12c73adb2ceb56779351c902292. 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/BK4DA2544896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb4af186305217174b4054663d48a439c8f447fdfea83a9e8de746d0da626e9. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BK4DA2544899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89722f05df347dd6a30595519c19e023f4cb54de603bfc8a0d5bfad13603cfb. 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/BK4DA2544904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c5c7e9bc83b3a51510f1c4027616cf158916d769a7530617b6844c504e41d2. 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/BK4DA2544889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924f5b54b88a5b1d40d60a79931b855161287faeac607afaa5b3e11ac36639cf. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/BK4DA2544892.