The Hollywood Symphony Orchestra and Voices
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 0xb977fb711632c2d3f0e2a5690198e1d57a0cfa66b0a8a074ab09687c730dc20e. 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/95ebc9d5-8bf0-4a33-b219-5e70c0e055f2.json and https://artists.proofprofile.net/proofs/artist/95ebc9d5-8bf0-4a33-b219-5e70c0e055f2.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 0xb3e7ed14d49e55a5fba5b26698f7667ce3439c6f4024cb71688e8688aee7a99d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DK5C50142183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f436977a230a67cb5a52e832751fb27930e5ad5d7dba9b3b409c42dee162239. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DK5C50142188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a4cd9fe130f00afe3ba39a2c4f54f8c2f0dce22976de5da70acf71ac9e8f92. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DK5C50142189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f507bcbba542f35766e7ae92fcb9cba7b6b458009e41fccc4cdd7a7d6d3a40. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DK5C50142192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b97e543727610d44a43c59f15e1141e04ecd71eea76a82ae76eb8fa8efc8ac. 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/DK5C50142193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dde74d6697c78aa7a86e8c70ecf2ac6fdcdc36ddbcd72b403f1fb039302dcb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DK5C50142194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1069f66fe91f9ca7e0011ada11ce67a211ced85809653105b84f1864e7a175bb. 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/DK5C50142127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ada18d8437806d2d07c2e9b2ce800d7fe45a54ceef633f9f037241c11bbb76c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:35:08Z), 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/DK5C50142128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03948b2ce609eef31bf822faa1ed1a34245eaff4e214aa2958ad1cd13de1f474. 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/DK5C50142134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83015dc7f68a692fccd9361f5297b7c6d96efc5ab5444921795198db6aa0af4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DK5C50142146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67043ef2778c3344782d4f49c8288c381e6211c86ef2eb96f5d15be9a85ea48e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DK5C50142531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8b022a8da39d9208f766616c0001479d5f37f536dc719e43224c0bd1960cbe. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/DK5C50142163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a2328c85a54947b81f82878af4f8ae2abcf818a2367934e96349f5570eb697. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DK5C50142166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e372468119f019bb5db2911fa72937a0afbf988793f1975ead2f86c3c9863. 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/DK5C50142106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978b34255a67941c119878735a568e0aeb72e05bce7c18def4617e1de0994006. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/DK5C50142550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2225e0bf55285370092ecae09eb4bbd8d145d12072c63413576ec1475d8c8cd7. 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/DK5C50142330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c185237c06a38f9e16fb084945c2c817a63f1fd5ba90469f1256d2722b1488. 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/DK5C50142339.