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 0x10a7296cf56d4db77f3301f09bbfff078a716080f63d93392d36b2f21576db38. 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/e6992e04-89a0-4fe5-8117-e6733eeffddb.json and https://artists.proofprofile.net/proofs/artist/e6992e04-89a0-4fe5-8117-e6733eeffddb.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 0x128db4b932e04e19b43c88be683a67ce611a19b0da5704a4bac0b6c800570032. 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/FR59R2283643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1e71fc88b1a5cec371432d490ea9f66453132d11a1fe15578c32a65f6d16dd. 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/FR59R2283645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc3166ed6afa95bb28f0943b383c2e5e8d8a0f3ef2f3aec2dcb0a16d3485bfa. 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/FR59R2283647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24abdaba374358213b657185c301e6d1ff7625e7ec6a352dd4153931e609ad5. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/FRX282288663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e684d5e1cd506d93f98a4b2e1233e7d2b7436220bf6b69af3ec0df8a46ef470. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FRX282288664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c05a1f91bad1e3c2ed7eee2528a38601dbd4ae60311ec1d14c0471af0fe6c5. 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/FRX282288669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f02878ce624d26bec36b7d3372c31b48779aeda6e46c3916337ad4b1e02c030. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:20:58Z), 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/FRX872204381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6680849f484b6401c4b07a4a644fa6f894bc4004ca8d0f279ed9a9102d384554. 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/FRX872204387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197158b128be4cccb68e3023adcde07975b9b7dcdfe29faf29b514ef35c6b598. 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/DGA052262268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddb67198715e0b803e28f9bc31ab05eb90ec841da0b54da40e72bb703fd008e. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:32:16Z), 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/DGA062233329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb397840b460daef5a28a9f6e6816b0cc9d609e1520ecc4de03697a1a68c4266. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DGA062233332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4710302e1151246d80cb8f2dee6bdb0eff0e1241926d528c80c33a90f89b2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:17:11Z), 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/DGA062233337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d4a8e30b405a1c12d1902f07af08a6512bb2c91e03a3b42dabcbb8f55a2c94. 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/DGA062233338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36857155dc4f392dd8e364e56a661d4798f9247b8dec0a1a2db9d2b5f711011. 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/DGA072256896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58196f17a7870e4fd72faee37df71a4f8016aaeb663d1adc802548826e77c558. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:28Z), 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/DGA072256898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c31a2d3e353068681741f12db0d9c195ec32aad0998b9aee6a8f549fc923aa. 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/FR10S2395361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32f15d40f70ecbab3c0b9b908b9551830148ee13d50d792e25e18e85e430b35. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR10S2395363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacda76324085158cdc79b0dc7cbb08969f9a63183fabd98eff81f2de0eb50af. 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/FRX202352829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0de706cec48d6998d016a6d8c52ff9c59b662b196789d4da893502c4280168. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX452369214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e08bf12f6cf3fff36ef2839d7ccf86c1491462d146d7a8a14d20c11353b9762. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX452369216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5172874d87647f7b2b17012bd953e625a5347db59fe52d1b2480e8d88f18591c. 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/FRX452369221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f83c94656ceea8abcc27c834fad10e3e2705090c7ded0e0405ca174acb3353. 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/FRX452369222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0930d30e0485b2164ed2e8d5ffe3027c3ef26abf6d8ffce78b823018e908a3a. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:41:47Z), 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/FRX452369232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00aa19a038c68015c0ea2d14934b707b0a90cdbe89571fd61568b1bf8ec544b. 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/FRX762386147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e3a190659e67a5e00df9011e52401ff55bc9579a39c8e389ceb463901a3551. 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/FRX762386149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b81a57c9e7668fe4641bb36e0fa5b2f321e32b820073e61462557ed9c1c6ce. 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/FRX762386150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf513c45e7dd30c809dd4d038e49324b869c0b4d4c2c2f36f867055a887fc46db. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX762386151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c04241e97f4655fdca8cd4567d275aac680d0199c01b98ab3de058ccfc62470. 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/FRX762386152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a3d9522ca1307a40f064456ad84baff95a4d75f17e316d4573ec39732f4948. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/FRX762386153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0e9fef0002ff1e7b6be3ea3392c246fb5565b220085ad45cbe8b591a4b996b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:05:04Z), 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/FRX762386154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c00aadccc90671f281219a28763e95acc0f690582caa2250f2b55084b5012e2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX762386156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63171f3f2f7851c41cd8af67c6fdf87600dc632e497eb4108ef99bde224a86b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA092335728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef625cda933e9719c982ae80dd94bb037a018f9c17cc6d5748ca2e62cb86ced5. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DGA092335732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8712f972a87d9033e0e1b6e009ff579668c72d71717c3c040977ffe886475c. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:28:16Z), 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/DGA092335763.