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 0xbddade959c5ab83e87818a57aab78bc0b4ea7170f17d186bd6242fd5db9469e4. 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/7cf44ed8-8cdf-45f0-b2fc-e3c2bcce4bf8.json and https://artists.proofprofile.net/proofs/artist/7cf44ed8-8cdf-45f0-b2fc-e3c2bcce4bf8.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 0xace159c2977ffb2cb304effbbe08f7779ef4dc4bf80ab2507dbde290a37a2cbf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBAAQ5830004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa64d4c236384f85a9982a15c0316e70cb37018bf052c95a4f7dcae3fbc2947. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:43:47Z), 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/GBAAQ5830003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320206cb9d193f8e65da88fb4525593b20afde5919be51e3e64695b9e955eca6. 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/USHM90437962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b735ab65997573e04c89eb2778bc7a62286745f3d610ba7aa05f1ec51f4cfe. 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/USHM90437963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239d50235dd9ea80cde642acb1f5649d232d01494e1593f952953c25d870a6c3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USHM90437979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae7bbf8ad08663882c5707ca73656a0497c9fc1d6d6c94f6cb79f6df5f54102. 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/USHM90437980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc74763c85c86c7ba79b9e0d205c2c547e2c3b6fc3cbebe1e896292868240e4. 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/USHM90437981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63713f4a41fff7a55533e73b0b56c599ad1cfc06041767c3ce97a1b22bb23e83. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USHM90437982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd41474708d42c3ab59e65cb96e58b9fea48ec8ffa47615df1c6339d94cbc97. 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/USHM90437983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5433ce2d2bc7e91ebade28324bf4b9c7341371af6361ffc89fafbd667c8f84ab. 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/USHM90437984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8fa8051875d6e9a86ee2dc063ce740838bfa2216a02e5b05c1b7696217a126. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM90437985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f464c1630094d83d2b99fc61106a19dc3b92a2569a69e4cee84b24ac2735ce4. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:27Z), 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/USHM90437986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7810dc26ac7c58daeb4b888cd38c3cc5623d2efa72ff6340fe1c3221fe2224b8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:09:25Z), 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/USHM90437987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b00ba40b3c12bcaf4293f8239a7ad7f2fb237ba90dee08125b8fa2ee25b3330. 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/USHM90437988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5438419943fe3d1e5acd0eeaa1c0877d3cb5579cf602bd7e40674a16b93a2910. 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/USHM90437951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe964238b1e44ea0c88bd04182065e3af2d50fe8946df63aac4e535b6dfe79f0a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM90437952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374da0411c0fc8fc8321fd96811348f07bfde67e4c13d67c67b77046998f6137. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM90437953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5427567bbdf06f233b228929007299ca1d65db222d35e04c83162d2f374e313d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USHM90437954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3590554c7e98d22daf9d9a4088d84816095fbab755cf34c6ba765a7d03726ee5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USHM90437955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa248909e520f4c13d8a2dd5d7463515a6b71df32367ded27f5eed043791b58. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:36:23Z), 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/USHM90437956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64d10d3bf628e52c5902bd185e03e3e0e001522e94d9702e00d015a1a94f4e0. 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/USHM90437957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d1ce73427f9d6a094bbd77c542243bca269822a4947753b74f177105f32bc6. 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/USHM90437958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d67fd7725ad3c56248f56e95b01493cf5597e8b785237a85ca3243621443226. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM90437959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56ccfe34ea0fe527f618ad3fe39719cf9f4cf307c4e4b3d1c90000bbc1b96ae. 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/USHM90437960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0a2b38eda53cf729417ebcb725a230addbd64c8380d2c496064416829b744a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USHM20860445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f7aef77a36f9d73f8e10e9a3928821aaa5210bb497a4475df3e43be0e609cd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:55Z), 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/USCGH0601727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfe150694ccb28c49c3c57a92a41620db8d5d1d48adef6074d3fab44be128ad. 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/USHM80528509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf39f1dd32d4898f6c26fb44088f939dda32d488267b4db3feb06171f67c754. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USHM80528510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126d7cafdc63e71a9787f14b400ca7e2bafeaea3be4ef3575f765fcbf42bd547. 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/USHM80528511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f58237ded89394c7cebde18714d9965d2cde42295eed1d98bb980b9c827c5f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USHM80528513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60dba34b5e705dd830e3f3f122867217404936f54865475523fd15d6f3d24c0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:55:00Z), 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/USHM80528514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3f711dbbde3281b884980ba7f754d491588f19524924207762297998a95efd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USHM80528515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3decd908c5c6c2535117c7b3d3ec63347c7595037b9a825662112724ccc2ff57. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:23Z), 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/USHM80528517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512d40698adf7bc5b7e1e98eaa9935f6ed7dc09f3f6819d9ac3361d8e1be0c91. 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/USHM80528518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf26bc0bfa691d2b614c646119bc8eca0317ef9f4e12889fea1b07f453c6644. 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/USHM80528519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52744cc5e7e504fc700622a7de9fa6c5cfc4033d3578f0a20637088f9f09eeeb. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USHM80528521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf17d754bf5ae90480d8660ef1293a424f27347c3fb208789794a6dd1a22429. 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/USHM80528522.
Tropical Thunderstorms - Sounds of Nature Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595752047de5d125944f78331074441812c0b3c112cc46489c6632e29c4fe3eb. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USHM20924208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9c2b5ee4c0cc7d4b112a92b3e65de23f8f8dcc648bc95fa010e2e9631496db. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUAUI0910017.
Sounds of Nature Series: Enchanted Rainforest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06db11ed2ec13df5a8dc2def4ef55879bbd38e912397fb328fae598816b1b173. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUAUI0910076.
Sounds of Nature Series: Reflections of the Outback
Ken Davis (Live at the Sydney Opera House)