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 0xce7b250e26bb5021ade7070674b8b333cf8443a68fa103d306b1958772389a0d. 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/e59e32d7-6c8c-481d-93ad-86b892bbefdc.json and https://artists.proofprofile.net/proofs/artist/e59e32d7-6c8c-481d-93ad-86b892bbefdc.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 0xaafc229e05df8c23585cb93aa2dd76b030c3afe8971c081f543a6e3b72bd6a4b. 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/ARZ601200002.
A Primeira Vista (At First Sight) [A Primera Vista]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0542a9da29c2ca7860fd29f19a1017ef55739263d723dff8e545747b5d27fd3. 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/ARZ601200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4541ba68bed5954df30b8c718d7df6256e46889ad45770b76830ec758d48b24b. 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/ARZ601200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa729ea14b7124869261c1987ed7a9f457852c0011a5951605f895265c5b9e1. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:31Z), 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/ARZ601200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444b43dd10f6b631651b6ab8b44ee78f809e308158604bb8f882462a54827406. 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/ARZ601200016.
Hari Sundar Nanda Mukunda / One Love -Fragment-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac732bed097f5a93c802764b2c134c3e9f90a95ef6ae79d22387c63cdba18e28. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:56:19Z), 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/ARZ601300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138c05c95b18003dcc2e4a8e8f7cefa0b4cfaf26d4e0a421438cc6fe7201bc57. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:14Z), 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/ARZ601300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce4dcc6e7e011278cfc66e8410be3b576d05de41ce22186db875771404a7abe. 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/ARZ601300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413355c8e0b79f593c539c08ece91bc93de9b67ab8330e818900f4117c05afd7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ARZ601300004.
Om Namah Shivaya Gurave / Here Comes the Sun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211874589893ee4f10e08c5dab64656573ace9180ab4150b052f035735b432bf. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/ARZ601300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aa721e29e5248164ffd766f3ce962dd857104cbfda02e645c4a3a937344996. 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/ARZ601600003.
En Tu Corazón: Hari Om Shiva Om / All You Need Is Love (Fragmento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495b31c772dc76aa0561aeda7f3f74197f53aba2f2a4164f09f4090e3d4f91fe. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ARZ601600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5da94d6fd6be6b4e8af3f2db3b6e286f5ae6a3f30bef7098830121c330e5e34. 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/ARZ601600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8006f6b2871e92d5afe6f7e7c026a91e9f2f3138d69c27124e10e52ab9bb8186. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/ARZ601600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fab46906a990b500561f1daf84125ae3a1e111ef7f671c49c65124fb825fb50. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:53:26Z), 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/ARZ601600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9063f14cb230b672f7e5bfe562ac8f1c6800a5d7bd3863236ad45caed4b155a8. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:33:21Z), 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/US7VG1876883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0306e1fc528dcc03a547b87c349cb13c9855a360f14cc4d77ca705edd581cd. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:40:05Z), 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/US7VG1876884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683771bd9116261ec44176383409461c9d2db9897e92b467845fca521fd2fb4a. 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/US7VG1876885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0abd69ca909d86a0912b5120ab80bba8e5af7611085786aa92f5a775a3e9ac. 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/US7VG1876886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbc0ace870b29f1e428718860eef1a6d3104236b37b53addd85df5228ff5ccb. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:10:59Z), 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/US7VG1876887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb202e07db7f7c4eadc8ed489448bebab8bccdeb4e22e4bf87fb9d3619b6b23ba. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:48:54Z), 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/US7VG1876891.