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 0xefb1beadb9ad23d3b163292182464bdadb586a971776ad5c6590acf823b8f0ff. 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/bc3cd4fe-909c-425f-b8bc-5ca95ce7abdc.json and https://artists.proofprofile.net/proofs/artist/bc3cd4fe-909c-425f-b8bc-5ca95ce7abdc.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 0xa1f0c63f01649f4e1e0da7e424a36d80e4cf837db542ecdadc406075129ccc86. 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/QZFZ72065878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb42aa9f15ed4b9328a530e0a8ca4eaa72757c2315046d2cef3503ea58adcd4a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHN72034798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657084eb143bab4dd450e9b27b8398779a29f7cf7c3a2a515407d74e00b1b95c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:23:10Z), 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/QZFZ22111603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3c7af9b14520287f8634b6a4146868b56cecc91297a5df7a1da3c5be0bf3e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZK6M2104733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb1c7e54210e5eec88c34b75160b34e897629b23df8b2d4a4e78f5b11269ae8. 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/QZDA82268010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8121779d92925f2a3c987902f5942c51da8399a8bffe3c8f2790f573f3644193. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:42Z), 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/QZES92290177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5948e835f3957b87d26d74e0db12b836760660f6f75976431bec0422720b97a1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZES92290179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb1c7e54210e5eec88c34b75160b34e897629b23df8b2d4a4e78f5b11269ae8. 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/QZDA82268010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6023d7035a2149630d57048bbe9e2df91f1d6f6ea7547307e93459a02f92d04. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:27Z), 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/QZDA72313828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bfa7ecb00e3e5d95540c2db7c1bfe1d1083c50979308db4c1f2c1ec6353ba9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA82357208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8df2a8da00260c248e05ec91be55730c15cac032230b4c8b1ef23e2ffa9b963. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZDA82348527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a186b1f2c17e8be851b93feefc83f43e3568aa8def2fa25c1a565643b1b18d1. 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/QZHN72350796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccb7951410c40f009831c7ea939e08c6a8e545257c8458d64f7aa239efb652c. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:47:16Z), 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/QZHN92305196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564ff6407597527807541ab28762ab3cb5febb38750bd9ada355b8be8e3849d7. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZHNA2368201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda1ca821aeb31be1b6fed8cae0ab738e756dcf3e9ff2fe574174ee91e1752c4. 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/QZK6M2308854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce639dd904b4cbb5116f7aa6278221b822b107c5ef55d5e4ecb99967f316eb05. 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/QZK6J2345883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4b4f59ef5587646e541943042f9ff21d52bb84f4ebcffe56079217be43d6d2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:57:50Z), 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/QZK6F2328106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d21734f230530d47ef3fc9b0207ecce910df6f806c5d936c8bf734d270e763. 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/QZTAU2399017.
Heart On My Sleeve - w a v e s | r e m i x
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2762127e7fe5afb68ab83cf9d3c5284510bc0239aabe3ba8b3a3e9be75366. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZTAY2327292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4748a2ddb590d12e458b00b3507f1dab632a5831c772d223426471ae2ca0db9. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:33Z), 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/QZWFL2335666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209c56b12053e831dabcff749e048b659c6818ad1cc581ce058623e82a0c4cd0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:29:04Z), 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/QZTBF2491680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e31b60ee82735b2537649cd53303bafb83385e43246a7a87a23a50c6bd2c42. 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/QZWFL2431929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8771234a01780ba162ffd8f6f2a40f19c5758e7d8e9f79830b320029d19c43. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:14Z), 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/QZZ762545090.