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 0x3d70afc495988c420bf5a01cadf78b11b1c4d2f0229b5a9e84f2d433cfb9d922. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df2b5ce8-2b81-48f1-99f8-f91634b89fe6.json and https://artists.proofprofile.net/proofs/artist/df2b5ce8-2b81-48f1-99f8-f91634b89fe6.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 0x3e23a72a260d346da494cd9d79319112d4defb1d401f4d9fd43c9bc6c9fc0344. 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/FR96X1970577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe712dea01dd771c2ea901d4a194a515d1734da51f333afe04ba37e95b6e3a8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FR96X1970585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc11456900ef6dd346cd9a3d7bf6dc3459db43f48b55d16a3a054e72b660d92. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FR2X42095253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57429b8221cde725d34409999db43b7b3a1738845f802ff8072b66851bd885e5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX282008891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04761afbc89a11af8362a60d5eb247b0ab580b78d7461fca708866752e012e42. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:46Z), 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/FRX282008904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08408f7c21f7fa56e0a5b0a5cdbdc4238371209b5a65d6e2f3ef5bde0e36ffc2. 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/FR59R2142415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03da15e1f00f326015ab422341fa0e59c06877c81b9be94621890b86e1d0baa7. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:47Z), 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/DGA082316618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9655cafda5939deca0e96a2001f4f756a11d083b91bd511932c520a7b27a302. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DGA0L2378027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e806461375f50b8ac12e9bc946c336bbe0381fb8f62f91f930684d686219a5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:21:10Z), 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/DGA0L2378028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036c767cfe873cf6efc8de9db645ed877fa2a357404bd8c4b8f9584ad19eb9a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRX762474141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86408fc1921202630dda8da75c6ecff2424d2ecac61ae91e1674cc2a2fb86340. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:50:45Z), 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/DGA052406661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014196ecb1741e55f11b8d79d94c9e651d20a53f2647b277aeaf73303fca070f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T04:59:30Z), 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/DGA082465258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c14246c37a63fc7ba50f3964f6c8ebee5445570b7a5e0b24dc091c8161f8a2d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:08:03Z), 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/DGA082465259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f057b78bb54476f028c5f2c55ab04befa318d694033082fd822738dd3dd59e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:17:15Z), 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/DGA082465260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bdc136845774b3519d6771f4ace8c09fab00134288cd4ede0b5309c4a0f171. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DGA0M2436399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f56d57b07f4f5c1313088d9fd7bc9b907ada0ccbce9576b8bac745b12c89ca. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DGA0S2478417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4406176e0accb6c2f5e18e823ab016cf74697334946de21745cabbdc74799f. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:32:27Z), 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/FR2X42582995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8d4fa6aa1f83accf89b24157a68da6747c477af522610afb953eb12c9a587c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:33Z), 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/FRX452586024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ccb2b511a8cb3c312f122943a52b0fdca5b222c9dc5a8b84309b671afbd3b8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:10:10Z), 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/FRX452586028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f84eae03ffd148b490926d8c782e7e4370cc84be3bc46630a139d3bcef6a4a4. 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/FRX452586029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8ae06e8f31a2dad501d0fa207119d4a716b437a51fae5b9d12e9214d9a669e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX452586031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62970b750355c1c606762ecb2ab3384e68b3ef6fb7cafa9901965b4beb0d101d. 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/FRX872529637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38f75378b072b42f4ecea89b1ba89f39f786839bec6e24a6d276041135c095c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FRX872529639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e895bf89b7f811d8ff7b1b6dd3afcbe037fc7299b39ee4a952996fbdd79943f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:51:21Z), 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/FRX872529641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b954972f296aaaa0d61f21691af67f42e8bb0c58ff50f22c3e663b48aa31e6b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FRX872579329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443cd59bc2a46cbb1304feeca6ceede1cfc66c5c07ec7e0071d64a71915062cd. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:55:28Z), 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/FRX872579330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49836b16f0bb47a85bfa131aea4a5307e32f2949b42f0d4069b0d54922528d79. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:38Z), 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/FRX872579331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfb70666ff9084e084d3bbcb8c5ca6a7e0d265439a6f762d27c697f897427c2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX202316819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a3ed988e4e628e7cbc11099bbea1ddfa58f805ba214dcd596d2bac3aebb136. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/RUA1D2298096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8138886719b6087e6131caf5d9c4655ef3d99b9ecffef2d57657107fee147d38. 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/RUAH62428114.