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 0x45dc80736c408c7ed169b763f7d9068e333281713459bb3d1ca22654608e2fb5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/722c885b-7adc-4be2-9921-386e104e5ba9.json and https://artists.proofprofile.net/proofs/artist/722c885b-7adc-4be2-9921-386e104e5ba9.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 0x223bad75cd6735c6952982dd0bd487a971c4208ad3d1ac1727fab272a724f427. 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/TCAJE2573363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c8af48578af0357e90808bb8728118b965d14940d23489c06de79795877f27. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJE2573366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01269bc321d78486b3fbfd97cda478dde7fd8fd770156a1c93afe80ee7efa112. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:02Z), 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/TCAJE2573375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305f128dd23f9244828bfed196d1827ff9f8eb77002ecb629a47e6149d726810. 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/TCAJE2573381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dd4129242f515c274424793546ed7859ee34cda13eb8b5508e18097d2947b1. 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/TCAJE2573387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491ef16c17842cd9bba22a7c1924be91564711859d972b45847f72e2f064f759. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:05:31Z), 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/TCAJE2573395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91ebc8171adca531151aeaa375650b81bd45e475e9bd6dbe61c1c0de91a6d04. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:48Z), 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/TCAJE2573402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dfa4e61af9f663742b5d31d63ee18223673be5759ac8abd2369ec37f778695. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:25Z), 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/TCAJE2573410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6d5768467ee206518d70bd237a78d4749f5f145637c717edeebb3c4f1d9bc2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:55Z), 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/TCAJE2573415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545c881aeda6b84cc83b9326c82e110209cace87832bcb9448b73476e964b92e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:22Z), 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/TCAJE2573419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43d62eea19b0c77254251d3f70575308c3dbf60457194474c96d03b17447ce7. 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/TCAJE2573423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92d63ddd6006771ed552c7e5b8a1d97aed7a62a99b6338d053e1fdd11ddfad5. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:18Z), 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/TCAJE2573431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69561c1defc699caaddd612982c67c0a924ee968903f7f20fbbcb569fed56584. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:23Z), 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/TCAJE2573445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef5182f0969f4de7a243365ec6b3155aa1598f6fbf2304ab0ca2cdf99e16a2c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:44:52Z), 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/TCAJH2531991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f60c92f2a5a3db81a2cc77fff6e3bc38d77974109e147da4597f16b4a7bcea. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJH2531994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eefeffa2365b22f157d4b006c40f00c0f4f333b11b652ebbd8e5926890cf2b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJH2532001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b06d2ff13b2104105d0ee81375972e291ebabadc39afc98050316d7bc05a345. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJH2532008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb18a66f715e0fcf4883ab9a823b11522034c6d8eb5bdcf69c104e7449e2dae. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:08Z), 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/TCAJH2532009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb80eb8d6413b2c66ec67d154863f23fa40bad752ca9f0927b32a66b79bc90bf. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJH2532012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91c5983eede06aed11562eb39138524f0c89c51a2b11e4343c8a48d2a03c177. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:18:26Z), 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/TCAJH2532017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf220dc615bf5607f42911894cee989099b582f005c8e87cd23dd87dda7650d0f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJH2532024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c2140976d89103b5c2ad785eb5b27e96d73f38818f8b2a8b5125c193f05754. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJI2532031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef532654f0f48b2dcb3c363a6b04e7b15e90acb15ed7e54fa4ab16051c5d9df8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJH2532037.