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 0x951871d6a81378197931e970f7e4bf48a1943d9e217d3a9c08d2e938c1fc42b3. 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/ec1cbe5e-3922-4a98-992f-fd07d3407444.json and https://artists.proofprofile.net/proofs/artist/ec1cbe5e-3922-4a98-992f-fd07d3407444.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 0xe95c4d97d7ab990518a43203e74907e726cb4106e5aa9fa841f2e02c5999dd79. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADK1718880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7732aa9807f2a744a9ae76c19f788f71a722f799fef537118411e5f705e215. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBKPL1803823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55a17ab9ac7beed1a354d324a79323e2cb4f9ef43ba131c897d03ed629aa533. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBKPL1960110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa1b6ca0ddb95c43615e1cc1d1d588a1f4134dc0c921a07a9b2ce0ca2f5e68c. 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/GBLV61909380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992eabd0da755a788f6f00c83fd915ef65cd46d1bb83c271b6a0fbaaae331022. 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/GBLV61909381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9da2279e3593e9f4f3d1bb8d6fc77858df6980cb80359c1043158385f21029f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAFQ2164020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a31a683fa60bc4f066c62f4a55235d931f2b637a14e4ec2dae0fa488ec6ac9. 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/TCAFQ2164022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232b2cddf0b2f338d74bfb681909f99a16c53c4472e92129c45f2db439691588. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAFQ2153614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb90bd6cd0d4e109863e56ffaa5290c50c62d39175475d9dfb1ea3f16881033d. 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/TCAFQ2164027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03432b465c3d6fa9ddc1f293cdac417b8f25063c27e003c6edb7e2b2a0b88416. 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/TCAFQ2183042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f544d3d23f4b66573469cb6fe248eecd6d82673626a49f8008a1e590ab280cb. 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/TCAFQ2164035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54de8130630a3dae00a17eaa939c8e0efe30da8fda76140f7b6fb032cef52a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:31Z), 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/TCAFQ2164039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb02eea02f05fe03a264bc180ecf71f76b590e2029bf1ccebce281f5b6e4c146. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:16Z), 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/TCACG1504327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4338d6eb065b6325dbddaf1e51995626d4fd54fd05a988a68485ab54e4530f0e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:37:51Z), 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/TCAGP2243818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b0b4a70b6c66cac420d730aab65911a752309dbe5caebc07c3845e3130bd43. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLZJ2349677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282f9ffcbd46229ba62cd4fcb5d463a34edea7679596b29bf2ab17e95e18d642. 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/QZNWY2382033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b0b4a70b6c66cac420d730aab65911a752309dbe5caebc07c3845e3130bd43. 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/USLZJ2349677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45e068209b3d28164781f4802d6069490733da8b5d492c160afbe67ef0e2bbf. 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/QZTRX2358969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ae9a403ad655552a7b229250c747072e85daf3a2ccc478b4e7d3a701a3688b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZHN62459456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6174f7c4ac5b73b47a809908fb89100d808c505f3af19f93ef9d75bb659f02. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZTRX2443217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe95ec51119dadf2ac6ead5bb5d23e66012747da9a03218d8f49eb797e84dec. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZWDE2463271.
All That Remains: The Last Retrospective
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d56febfe9177549ac7cedab3c2812eafba8b8ce945732839e4defd453293672. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCACM1614481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc512a6b0328532dca2ae63246a3452019c97d56b577f8bb49ba03f3fffbc7978. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBKPL2280836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703b8973ae8fc49d5feb03007afeda30671ba6f2f7444c2267d9fb5a66f1470b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAJN2592943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc58d846cca74f39e8c1fee42ab63d7396731c05490efc2b07cfc9a0cc832cdc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJR2570623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2686a3b04668557dad4978e79775dffc725b9f4587b94e04599af2fb42e30b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZ5FN2446262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a38dc9349ecccacec43750010a298e374942cf36ebfc375b3f548686fce28a. 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/TCAJS2570800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc13f1f566021700465b6a8d9035fb57e8b188a4609fb4dd5ba159bc1c9ecb9. 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/TCAJP2526959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703b8973ae8fc49d5feb03007afeda30671ba6f2f7444c2267d9fb5a66f1470b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJN2592943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe95ec51119dadf2ac6ead5bb5d23e66012747da9a03218d8f49eb797e84dec. 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/QZWDE2463271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3357604d2d137a8f1d48578f8b06799f1e866753dcce920f961e0d098607966. 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/TCAJR2570928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598917f63e428b734492ac1844076a28252676e320d6e669b7e615e19071373e. 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/TCAJS2571193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f47c82b14cf5df973114115886834903a23765fff583a085953a26f541c02fc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJR2571205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ea3b108dfdaca341b429e2de92fe2bf2b1b4a1ee0d854a3d7696fd44c1d80f. 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/USLZJ2522173.
Nothing But... Electronica Selections, Vol. 08
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eea808e566cf28e2b8dcc755e76567150197c3c0b2d45ca93047f05d84497c. 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/GBKPL1958649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3ca116a8fa3b2f7de6f17e4da5ca06cc02b87782383431a748d0c7dbbd8e95. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFJ2125217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816a709eaed03bb3e0356335f4c92f768fb445743c56ab8961893f9f3a4586fd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR10S1496833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e145e6ae369491b318a803dee08c58dea331bf047b62e630686229cb24cbaad. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GB8UU1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027cb9967fbcf03442dda997bcfb489073c0d6db3cb807575f5581fd5cb2256d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FR2X41532154.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch