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 0x0eccd716474e961b1789dc8441985a6969afc54c1b5ff4a6ccab5ae06655f99f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0cfe378-1353-47fc-b736-c886e9243245.json and https://artists.proofprofile.net/proofs/artist/e0cfe378-1353-47fc-b736-c886e9243245.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 0xc65fbf2b01900f4bf800eee365176b0f98c185840ce1dd84d006341deb0cb521. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBLV62313251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526fd7b01aef86f07b7f4204587561543b6bd6f100ae662ed35c92521126da27. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBKQU2408583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ed4fe0781d7b5662a64537c845889e4fb99bdf08bcfbf1bbd9157d4b58b8a3. 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/GBKQU2417536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2cceb6df6afd8f3d380e784dbc4085b372b5eed09aaadc7dea00e8b8b8c33. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBKQU2417537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a9748b68d615c7623e0e6a43a5ccb7ad4c0357eb24b741142264e081c02de5. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/GBKQU2423616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107650f756d38e4235d26baf6d3f2b0969049be2dd48ba019a2722a7beae851b. 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/GBKQU2425969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4781691c5c3c87dc7623c906002018daae04de85aab865731497b368555751. 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/GBKQU2425970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc073d9b293c8c3abc3038f854f128371332a1bc988defec00b33059b4743b602. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBKQU2428194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6081381164b39d36c013b88ce23f3a07f4023c0560db7a6d0a49cd9a0073a9a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBKQU2428195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc54d0c0ddd8013161699723ea64b99244e3df565a3152b6d64d6e1689ffed4. 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/GBKQU2428667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd2b8726aa8b925f0aed0673889fc83430e0b12a62e71ed32dd72998456a79a. 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/GBKQU2434913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558a6d7ffccb8ecf53a20e0f4b34b8f1de4b0305246f2c9479a5f240f3ca0c3d. 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/GBKQU2434916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8db697fd89c6d5d04fc88be1668131c8274801c6ac7fd6da2d4233d5859207. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:55:48Z), 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/GBKQU2434917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90db2e8e7bae7c04bdee3f9a96aa94317bdf2db9ef35ad64faedc3fb03cd85c4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:59Z), 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/GBKQU2443624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eb2c0aa164fa0bbf2302d1266405aa389da26bf9a270c89578248410f299b4. 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/GBKQU2443626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a06856671f9cb51fc3d59da3cb1f6c0cd85caa77e9bafe6c9964d822eb62ff. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/GBKQU2443627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bab6ec6ca41d6f8a5860bcbbb4e00e79a5eeaca5d4c4becbeb6325588f812a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBKQU2443628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91877eff44f7734ea9d50494f6fa402408fdc707a56fd6898c3276c709749bcc. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/GBKQU2456587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aebf47abe86d657d241b12c61ebe6c8e3a46b32f192c609b9501b18ab71bb4. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/GBKQU2456589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccea8d0b2b8152ff60ed0bc17f6429b89a0046583ab0c47c99c51cda0d1906b. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/GBKQU2461380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e46b0c6f21f586a259588249895522e7819344ed26bd78b396d351b2a1aeae. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:39:46Z), 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/GBKQU2461381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179363e039dbf4d474228e3dd40473661f2c230ea95c5489b7f651a8edf3eaf4. 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/GBKQU2464014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1964efb52ec63ddcf9e36aa67e06457a36d31162f1ae57f57b3bd861b875cc6. 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/GBKQU2465797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae23621b3a2bd538558a58be4cdc4a2e3efb9367490cf830f058b62fb6cf6c6. 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/GBKQU2467964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25937c6ebd792de973c0ba92d8c631e8aebd45deef86e4328c48ceffeaf19e0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:47Z), 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/GBKQU2467966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9c9ad367d9607f236cd065457b184861fc3c32c13a5042b5d6be34b98442a1. 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/GBKQU2467967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94a9b7347bf8eadf6f345994e55c81442c395dd593d0e8104a9c53b9c8d8e48. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:41Z), 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/GBLV62404941.