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 0x81320fbfaf62a61461aa0d998baff0a58d665f996b8becf5b360d96e7fd7c0c6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93d36d00-60e9-4ace-b048-5f9ecf56f796.json and https://artists.proofprofile.net/proofs/artist/93d36d00-60e9-4ace-b048-5f9ecf56f796.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 0x37b9788b073b699f7750556afe3e6c79a197edb0440ccc633fa68109356d2a85. 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/USHM91857296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba38439a96eb3324152b2ba6f337bd26f0701c57945b6263446d2d935fdfc5b1. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USHM81944970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec21dee4a4de8f7a4da29a672b56f82bdb2772ed5d755297099cc99cabc2baa. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QM24S1922824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6817a91ccc196b5913ad48b784a90ea896372bd716defba7cc5b2b6402a126d6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USCGJ2052624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f44f8ed7531de80b5a7eaaea542503d8e8a1cf57c6ba5384b875f5168ac76d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM22044321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518580a826e7073b3ed3979969b603ab0d89ffa895ae396d2e725cc45a22c41c. 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/QM24S2006965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7bbd3c490ef9cf82b94a2d802585ff90aac2f9bb7f89b0e6c3a4b10541b89. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/IELOI2025196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784594ad834dd0c45db61aeb858b5cfb0407e2992ad4c49c7244f430eb9510dd. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AU3SE2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934dae3b7c2599e7f428e248d21b8dc8e375544a6681385c7dbf49dde6877f04. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM24S2101770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2e93d963d2ba4260e7fec482899cd764eb50668ff247f52b63727ddc5a04f8. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/SE5ZV2107501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dc1ebc9e47c21f76c31f803b7cb681c6b25c23748f7da5ff2bd8982207d19f. 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/QM24S1903415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4795d53cad8249d61d211abddd11e24678e188321db80fd8f92fbd4cd4e1b0d. 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/QM24S2105672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015568f102a77b532f232e76137171fe0331f8bc946a9c881ec9c575adbd7127. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:23:20Z), 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/USDY41761696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dec471d42172591f7aa1c2c9143e2ff6f9799acf4816b94edbf0d1d0fe0495f. 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/USCGH1898708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56adc080ebd2c4219d9d37ab42b222fd7ff489a3852756a367beac9821402c7f. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USCGH1898709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29deb4215a41cc279f8817bc458744852f8c27d1d6f693ef91ae523f424bc0fa. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:02Z), 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/USCGH1898712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86ab0c302259daf1721ecc3a778c2c32252fac32cee70dc73edbcd617e40ade. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:02:45Z), 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/USCGH1898715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14314d7260372392186ad97e9ef976a8327dcf45c475aecffe96831306aa922c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/UKN2C2102902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a521fa6ada9d7a2905a224b699e9629a97e312efb77fdd7585e8fd9192f0f65. 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/AU3SE2200763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f6439052c13dd4fb9b42c589d7052f2275c0bba950f99c65274c89df4a2ec9. 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/AU3SE2200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7d14ed56e4011e94be247d8530df776395551823949ed8a5d6ce93b9460781. 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/AU3SE2301099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefa37a32cb4d2f8a15ded24681ad359eeae654a1afc9e903097df2035d8de4e. 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/AU3SE2301336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31560af9ae11d2870a00f10800c979659fa8316c077172b4c03a909bf23a27e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/AU3SE2301390.
Two Romances for Solo Violin and String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03f95f5ce3e9e6cd4687800ee7a0317e2ade8cda1bf717ed27d373b5733a835. 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/SE5ZV2326401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf9538347ea2eede2dc6926d7f19f4d7ea85c902f0bc6c202070e9ea41acbeb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:54:14Z), 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/SE5ZV2326402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aa4649c575d779ca85c816dc5d1b9a3a7ee56ecc9d8adc0d960172e2b6f07d. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/AU3SE2401111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8a2058787722c731d64f01243270e4b1f29d6a1a629622b100dfbb80b859f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AU3SE2401367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ead743923391811da5e30cea21d0ecfa03ddb49d169c6c7d2491453ebd5ca5. 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/AU3SE2401855.
Closer Than Yesterday (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aead3aa0a964a793a944eba59e92cd5f436d1a1d956488ef3eb9a86952275c. 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/AU3SE2401986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fdf3b5b20a6e713f599533af63d546ab68dd743e8485d377c3665c98ec33cc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AU3SE2401971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7792a9cae3568f628140381de7580833c54e03b13f09192a870767ff37d04ce3. 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/AU3SE2501026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139118259ff497d2f6eee8fc5af2bcbd2bad49053a39a8acc97f769a096578f0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:53:34Z), 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/AU3SE2501828.
Remembrance (From "Eleanor Quinn - The Hawthorn Hill Rider")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62748f2ce0f26e148dbb7ea59d5510483710353456ba364b8f433d7763eef086. 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/AU3SE2503434.
The Safe Place (From "Eleanor Quinn - Shadows in the Salt Air")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233ac3b514634b527a4c60303b876f571b5e7dc5fec7ef16ec76736ce8b7f6ee. 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/QM24S2008057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4795d53cad8249d61d211abddd11e24678e188321db80fd8f92fbd4cd4e1b0d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM24S2105672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3fc7a1aa61239ef4febd20aa8873fa247dcb3c25d89b8eff9f05e7388c5f6a. 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/QM24S1924051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a865d3309db8ea9e0da41043ddab19f089617636bce85233bcbd061db0f4d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM24S2002609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c26ace2711f238d9e2daacd7e947aa3bf549f6db39eab8099a38c2b59298b76. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM24S1912548.