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 0x7c6e57750cf8dc8928ad8176d7554dbdc1491a81760162a4876b55991b1f14dd. 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/e1e39390-3286-45ad-9bd5-cb687d54ee76.json and https://artists.proofprofile.net/proofs/artist/e1e39390-3286-45ad-9bd5-cb687d54ee76.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 0xde809e2f119fd6e98a32dcfb2650166efb15fdf83cc9e559046c75c37b44126c. 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/TCJPQ2114486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355d22dc7be8103b650a39fa8c8279ab62ed37608761656833ee0318126ac0ea. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPQ2114487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6c530bdbca1156bdb79aa2edc49a37b8df420ae53006c5fb7069faf69f2b5b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:07:23Z), 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/TCJPQ2114489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7853e8eceaa00e91e74a90c88fae1eb4a3596db6857e882d16a040f2f3f089d9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:21Z), 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/TCJPQ2114577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8d1afae071dbc73bba4c6fbc0633058f8cea5aec6257a9ad7e2a087e91e1be. 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/TCJPQ2114591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcc43c34f9d900dc3bd9b4b00aac6f3a7bfbd716ddb26c147c07bbe1e88f17f. 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/TCJPQ2114592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991ae27ef117f01f5d51de1be7cfd516c43a2b191d666af8b732a88a0f47a6d. 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/TCJPP2180007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bcc3ed4eac1153d715bb9142d4dc2f3cd68891724740dd6625e1e6ab725655. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:05Z), 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/TCJPP2180009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20963bb4517c1d3ec65ce5ae72b56ade4a094a548dbba6c376367780b08580f3. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCJPP2180012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032c7c3492808abdcdc1965b480f524b6ee74b9ce28be64737f4fbef1e1c9280. 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/TCJPP2180013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955542cb03ec3123c305200a15d3da4ed3dff9d60e47b356a461eb4debd27691. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/TCJPP2180014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceb4bccc4a7628408c6313a35c1a203420c2cc0a6109cdff729287ff5e1c129. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCJPP2180015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1bd038f5772b57caf46bb355b621997ab96e5938ff60875a0984d2cd59d29c. 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/TCJPP2180016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d73ffb8bc497b411ebf215f7704d12e4930980b9fda789b9853443028b04e4. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPPC02111903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130f91070052ca7ab8aeff4a2aaf7b05d6bfc3c26f26b5274068bb33c3e50b11. 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/JPPC02111905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809afef933234e78761a9fc01abf748858d339f7292ba2f438b12bb2f30143f3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPC02111907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb501142f8b9a8749f807961684bdeb47e9f9c4daf3b14c0d5ba623cba61dd1a2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPPC02111909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b98f0bac92cc79e4cfe2ea1880945b9958ff1dd21ff181843e4b6815588f8fe. 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/JPPC02111910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df2ae39d9d9d1dc670cd91302d51f5591567b3555f4ba12bf9a16b57a8b483d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPPC02012246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d73ffb8bc497b411ebf215f7704d12e4930980b9fda789b9853443028b04e4. 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/JPPC02111903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130f91070052ca7ab8aeff4a2aaf7b05d6bfc3c26f26b5274068bb33c3e50b11. 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/JPPC02111905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c48547f923a46403118600240df7ffb1921282ce73496e8698142f2f0b7df5f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPR2284891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f5455f0f4e777a0a97080c55bca3778755939601c572a144a3236a2ae2fe1c. 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/JPPC02211432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bff10bde8ab958d7965c3f45ebcc10872530d58d41febbdb650553e52a650b3. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCJPU2208662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de7af158d5d8fddd4bc1a557ad0d82dad3b7dac956c2534270fac29d39a3de6. 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/TCJPU2208665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3cc3e09c43d8cdb4ddd272ce6279676d1c8a365f0f75eeca1ec80083c369b6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:51Z), 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/TCJPU2208666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6069cb0ebc909a1e408b4a5a8c2d7605c0f91c134e22b225b81049d67a7b61. 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/TCJPU2208669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a6e5f0d6cd9cbbce67ea4b55a4af69a6a7022a00209e73c281946d210d4845. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCJPU2208673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0ba4c3db780853c8d3e99c3150e559c064dcb2d981a703df0c52cf72f32cd9. 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/TCJPU2208678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65598806f24f8011721b5b36ea3dbc0f9d1d16c35fe9c94a2b041e5f0b805fe2. 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/TCJPU2208680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090175fe4e3dffb42c9e385caf2bc5a3cdab0bb364cfe6008721828b7543c5fa. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:05:36Z), 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/TCJPU2208683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8160db6e9cfd4e18a340aeeb2db4c157de10dced21d8309628bdb38d1e27fd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPU2208685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefff728fd1020169d419291936fcb096a0566e7cb39d7a7bf04d00eb097ef85a. 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/TCJPU2208692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cff7004085acc0a38c6ac0c2a714fa8f746ee040d9dbeb2b1a46d32d3bbc4df. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCJPY2351358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8fe360306e319702432851023d83c48b2a0e4674d31c6ab56ef61f2016710c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCJPY2351362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e194f9828a96028ecfd716fd147016e67b7372f7f995bd45f5a205e43f34869. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:05:45Z), 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/TCJPY2351366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1c0692df98923c3f9f7cb69ed556da9ba57294ad331347e38627cc8139e968. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCJPY2351370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679ec26a222024be52dbcdf08505d9b4a74667dae22014d564dd4f370d5a1bdb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:44Z), 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/TCJPY2351375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6e7d410f26e4c17666fc9e3cf465b75ecceafafdb83b3f9f6e3ac49d69d3fe. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCJPD2412854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415a30bcb65d0fb969bc91f377a21cd28ce3a521205803eed7a1a8f4fb1d8315. 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/TCJPD2412864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb68817b054a0184cb09e24e737bb6ca73c076d53dbc2294a1403a440669cc0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPD2412870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff4275579f7f7407a427ae26ed3ae18aad6d878748e25faca4e4c0a19a81dd0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPD2412876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f95dd531144d4f92115f9349ba25f64fe1bcb96acda6571e9dfcf167c56c2f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPD2412880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71697936a29a58e7346ba13fced8975a4b775bffb9bcfc1b2f8f8bde06e7aed4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPD2412894.
Kokuhakujikkouiinkai -FLYING SONGS- Koishiteru
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd722ddf2ae5fd3364a3eb68622f772c7b998c494e9c5ae487c3e31df9f54ce11. 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/TCJPS2265912.
Kokuhakujikkouiinkai -FLYING SONGS- Aishiteru
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a6293bfaff3b0e0b181ad3cf6bdfa844608042d1f7bb9a4c7137d74bb85f80. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCJPO2126890.
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