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 0x18653a1b9778ee887f81a80066a7545972181b558ccd648a892465be76be32cb. 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/42e3e29c-70f5-42b1-a2f0-7cc042082a40.json and https://artists.proofprofile.net/proofs/artist/42e3e29c-70f5-42b1-a2f0-7cc042082a40.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 0xa03a442d5f3c38dde0be89b3afc5638722393d7db983634c37466ab94feec18c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:56Z), 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/QZHZ32227016.
La Esencia Del Aire (Remasterizado 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda85996d07dc9b804ff11a56554eb2d9da2afacc7640946255c0075526a629d1. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:22:28Z), 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/QZHZ32227020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d105b3faf58be7a8ea59f3e077a7959e3f824a6e99eca93a795ca07b65dc7f2. 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/QZHZ32227023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc903e73530463903db04c7aff56afc4f6e8ce07555d30d14b0470dcac12dafe. 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/QZHZ32227024.
Querido Frankie - Remix (Remasterizado 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809bb52604d6164cfa7278bc469a8bda9e7d9526c41ae616786ad97f14da46f8. 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/QZHZ32227026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694c9fdadd83cddd39adeb35fc36a92a1eed4e7dc10b2339424b472cb74dd8fe. 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/QZW9N2219536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10099437d65ba5392b8b45bcf420e61f5d93aacaa4d6fac0d205da5f900d1a62. 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/TCAIA2445935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079780081bcb740f527708e798c16be5ed3357eabc8dfe602b171e29f18c96ac. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFME1977974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b23ca58321a469859f4e082080a4b68ff89736b97740c8ef313df2530f99b7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIB2417223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a8d305e070eb870d69a54ef5460c6574495d580dd4f1a3ffbd89aee8fbbdea. 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/QZW9K2282783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad859ab724ad4f5785c594fd4b8e94f1815a6d9a064b4c8568b949d3320015. 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/TCAIB2430840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f4862028d7017728fdd6f4c0336be19ac0e98ab07355a1a1d0b709b07e97e4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIB2430887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10099437d65ba5392b8b45bcf420e61f5d93aacaa4d6fac0d205da5f900d1a62. 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/TCAIA2445935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504a5d43410773339501464dcbc852c95828905da24a010d29b43e150e7e699f. 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/TCAIB2431005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63657d77b391e876c64aff43079cde4445d9d3f3ed31bb04453d50cb6dd29191. 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/TCAIB2431068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c021484c3bb7753460345c7d7294b0cedc76fe3214bd7104d74f0b674b49265. 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/TCAIB2431186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079780081bcb740f527708e798c16be5ed3357eabc8dfe602b171e29f18c96ac. 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/QMFME1977974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c909bca1aca460c7d064972fee494b19dac47759e72b0024011f33082e586bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJZ2274978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab535b718a09feb42d22baffe19bf684886d2fec85f6b5d4fe652f17f301a31e. 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/TCAIB2431235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378479a7e39916ea166caa6a1d632095848f5c9e82ace32a58bd0a8d56cf1f41. 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/TCAIB2431293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b692811d39fb61f4f89f1d40f75895be60cdfef251627530e72847b48245a95. 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/TCAIB2431305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ccc29c11dd0f8bbd13e42bba9a51187564bc75ec64aa0b5ad1590f73b870be. 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/TCAIB2431347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4a81bc6c6b928d5f385cd5985ff381633bc09d36d8424166c6b4e3f476bf78. 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/TCAIB2431360.