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 0x40868b47910add5d93f6c7e8f85d84dc75930681d8c57b4035ef342210e05e14. 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/c67b35f5-1b32-494d-a94f-571b5c4f7c9e.json and https://artists.proofprofile.net/proofs/artist/c67b35f5-1b32-494d-a94f-571b5c4f7c9e.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 0xb6a8c1137b5cfb86a62f648265f2135d650453d17aac3cbe9bc0aa16cff70db8. 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/GBBLY0600765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b38a0795069af9d7a6d1e7a367eb8e6767be7333dd6ab2f5f0d344f13db5e6c. 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/GBBLY0600774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a780d5070b53d6ea6e14a14aa00a80a7f3dac88af34dff0440fd9d3ec2ba437. 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/DEM070111033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff16645cb8ebae43ca3c8c697a74a32e15aafd9996ca08deeb2a5ae7e0203320. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEM070111034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698e761898ee5e4801de27f17b8bc5f9f3564d49a0ec84a3093c92c86a3eff6b. 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/DEM070111004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111e07640150b37119c3381f7b81d59ad7ccc238f1aa3ae0c947f41896f141de. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEM070111009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a4b72c32f5b06c68fdce54975081c522f07a10dce5481e7eb97c4a4cd72e11. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEM070111011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c8dac8f92804983b70298cf9791bcae28a3dfcd637da4cc49b308a3fb7de6c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:38:22Z), 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/DEM070111025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cfe3164ac273d3ab90fcc3f5c24f68c25a2bc4cca9306f5ba60b9ba024dc17. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEM070111031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814d20507d7b5a138ac99740b52975ed69187b821fe6d6f08f4fede223c4da85. 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/DEMT21200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d80c646d2376de3b6565b53bfdc8d05072969a40d9cdc3067736455a9c2bf5. 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/DEMT21200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7349c06dbddc69f2741637627c67d100a604435fd9696cd36ab7f23a4efa40. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:30Z), 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/DEMT21200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eaa831b62dc0a24942f197e4edbcccbbaf1c589880195179b512f65a443657. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:54:49Z), 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/DEMT21200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d444fe0410cc325b9791555e4b19771476e6a2b05f4aa89be84179494449d8f. 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/DEMT21400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a347ec896500713e9559988e53af28dd2589836981a454334d2bdca1ffe1e8b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEMT21400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128d41a5fd9d50f1f498f9c7a7642aaba25cddc87dc3400441a7742182d2f4fe. 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/DEMT21200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480fecf34d23195fb6d2233d6bf29d95c8d09de3cae62085938f448ba5b6db81. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:52:30Z), 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/DEMT22100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71f5e0aa5b965ebde5cc86eb557e0408388950a8465e27834267043be63832c. 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/DEMT22100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfd6cc6eceb048c338d7dbf553e2d1d4b1b369c49d74cd725d61dc590486b63. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:22:59Z), 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/DE1MZ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde467275926be24cc24e1be49317de9bd13dd8fa268047a593f049d5640cd5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DE1MZ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdc50b3efc5cbd2481e3b3da0f1e4ed833756199fa5981779c9cd40cf7c5cdd. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/DE1MZ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d402b81935cc9ec1dbd71d8fe75319f9a02629c4c4775bedafb51f332a52216. 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/DE1MZ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38046c47a0b7d373764007126befb8f38fed7da6093c6f4da2e0fb9da905971a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:22Z), 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/DE1MZ2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb802f35d36918d332ef76818b6e571d3972a98943b22846171bbf77fbef0ec3b. 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/DE1MZ2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dadecd1d2bf8921eea67a023fa7760b1bdfc0f97ac6ebf0371cec7ae0c8d499. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/DE1MZ2400013.