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 0x3e55809e7b2d0ddc3a55998bbb1efdadd42ed25a677def8545f63d58dab04221. 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/ddc7c916-7cf4-4e2f-8542-8c7d016dcf38.json and https://artists.proofprofile.net/proofs/artist/ddc7c916-7cf4-4e2f-8542-8c7d016dcf38.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 0x92f77e6e4a4ed7f7192ba778494239c9f17a7bac95ab03abc1fd7a9ff964b62e. 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/QMDA72193657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138e6df05695b68c1a0793dd5ca4d9a363c37b3ee8d51e9d454f396a1d67e54d. 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/QMDA72193661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ce995e0ce8bda848337565985cfd6081d76d493b71998fdd5395b48b20fa33. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMDA72193662.
Five Crazy Skeletons in the Middle of the Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c75314350cb36705f9b09eb8c97940affdf03707a12726cf000de1a27ac1f7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:16:48Z), 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/USL4Q1911608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04d9f71442c5ce679d8ad207acd532e0736b72acf1cb88161646dc34cfabed1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USCGJ1983406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fcd039b7194f1d77d8a6d0c7e4d0cea87cf037be33c26919a6de8cfd455e09. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USL4Q1911612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82adc6deea805b9fea81c9d84723e638777a2c7a2cb4208956f3c6cae2f6a1c2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USL4Q1803194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68605044f0d9ab31c498a4963d663ae76924813133b96a2895026e18a225cac5. 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/USL4Q1803196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5df6cdefd7620c54966fa96247a3daf69650d7c491708aa87c645902b75ccc5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USHM91895900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b0f0c44939dc89bc97511e51cfca4cb2ad8fbb4ae6512e64c1f1bcf7d92db6. 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/USHM91895902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebdc125fabe31a812c5da1d5df3a38baa4ae4b5a802f5835811d01d2ec05de7. 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/USHM91895907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd582851efd2731eadb1ddf93e1be9ba8dc6b56e8bd55d75378c1cbbf4acc0da6. 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/USHM91895908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9566343b6ba7088880ba58ce9fc7f6ad27fc640cbd74d0f1794d65931962f1f. 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/USCGJ1983413.
Spooky Hickory Dickory Dock And More Kids Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf431c74e69a76095e40b7c309fa863a4897a884eb1f97f30013fda167627a0ce. 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/INY171502225.
This is the Way We Brush Our Teeth with Spooky Brush
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c33d00cb9af468d0309fe4d384fef7b21b282bc1efb4541612c6908079378a1. 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/QMDA62260705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc452eb1e68fc6fe5a8ae8c16cfe7c77246faef844f9f9c1efd09f2f6ca240786. 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/QMDA62260706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d726382e77c0b40e0015f7d759736190c0314c6d4d1f5a78ba66c1887c5533. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMDA62260726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a7fdce7d110946ad8df3cc89dc3b682154e9a52e02e16482e4470729d1e222. 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/QM6N22376335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999ca573418379a8b2a3bb90f2fb874a983b5d15acc1231d211f0cd6102e7c66. 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/QMFMG2350113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a51973d30ac63543df9e44c6cf0e98da6b85f19175701043478a3ca1e84f947. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:02Z), 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/QMDA62439343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4fb8b7924a801c31fa8ed5028fb8d2bf0f56a58fc49b7c560d1eb6c42ee050. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:03Z), 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/QMDA62478942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4214d951baa0920456c879b8ca236c69a8b636a83bbc8a79114043947aad05d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T04:59:44Z), 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/QMDA62481860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fafa3955bbeca9c0de06fc82886f7c8350ca9443ee108dd0b1a1a4321248f7. 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/QMDA62439241.