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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5888e32f338996f0b999dbea45b0f397e7da16b47780fe33e2667bab156a425. 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/37e5b373-3d59-4acd-8351-16f8ea918220.json and https://artists.proofprofile.net/proofs/artist/37e5b373-3d59-4acd-8351-16f8ea918220.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4fafd2ba489ead3147b85430ccf2eb3aac32e432b80ada3c3ce92d2970c426. 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/FR59R2227704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5c1b38f8d3fca16fecce15c2f139728c18e5446f317475d60d5be5525f5d5d. 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/FR59R2227705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc071e51ab47ede45a77df161223e522acbd22e1fe005dc6cfe12902a89f6d7da. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DGA062236916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c5821e4b95e211f79c98b191942069c4256dec9257fb5f404d822245ef5e3f. 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/DGA062236918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bc3ba9f9f498071f48fa020c045005f8985f9022827cb1f88e10754a280d7c. 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/DGA062380397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7bcf95509125b99ed5836a5d584c74bc3304601d0c6a0fe23efb70f85d8fd1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRX762495726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d1edaba1d23eb451d29a24ac852d9b91c0d8879bfe6b73d163146d001107f6. 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/DGA0P2310465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc10760b83a12634e6bd0671c8239481486cfffa007faf1c96b97f37d491af1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRX762495727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a3c197e91605f16cb7883fb06068428c4db73cafa9f2dbcb62ab06b58e6a7e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FRX762495728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7c226f02fe1e32879a5dedf751be5f34c9ed6542f6c63dea03a89f6dd56123. 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/FRX762495730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80dc27378f30baca97393dda3ab5f7cf6c2981676396ab604e8158d1a877324. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM4TW2556303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701d8d8f053b9def8678bbd7f939cf995a3ed115e9149445747a7c1e451b8a64. 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/QM4TW2556304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbadb2440293f730bc18d62df07f44bc0fc078f16891eec2ee3b36160b615520. 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/QM4TW2556305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1748cccf4270cba69644b5f6630ecde68b0d4f8bfd62f9950692e40b4f27eb34. 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/QM4TW2556306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8612cc5610346aaf688d161982fcd291cddcd91d54d1bc610718b9d0547645ec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX2403086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf46fe983b6e29a5c567e1576fbaecaf05965a03645ad43fcb1c771d40709762. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1539804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7827c223cd98d4441ddf26168e8dce43ccfcb4c9bfdf2dd2f5bcb2647d31b35. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US23A1539806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd728822b38cf37f6f52f866fdedd9d61e6eaf8812770bd634b5064184ccf3760. 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/ZAUM72300960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f2478ab511992990b816ead2560e50856b55a868a86d2340ad531388b6e2c0. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GBPVV2300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e251074d2c1a179326cfbbc6786f445f811bd7fe3517d013a68f4ac8ce864a7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZAQ652400427.
Aluku Records Various Compilation SA Edition Pt.4 (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1b92e5c36d8220fada44932b36b9e1df0dd4d3312a19afcd7793426e8a62ba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2404443.