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 0x92c18c6b0a5312f9efa87a57ae9ef70c7975a2a669ffd7b8dce5d8c82e31a7c9. 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/07c18caa-a835-40aa-82ff-aefcb8923434.json and https://artists.proofprofile.net/proofs/artist/07c18caa-a835-40aa-82ff-aefcb8923434.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 0x1b8c5dfea76769d6c8ea45cd2ca77cbce7aec9030102cf9193d74fde286a5908. 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/ZAUM71901378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710f069402a9ae8fc5eb51b4f7e1e0723b9f4dee813c476bb3ba6d7e470a04ac. 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/ZAUM72002313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879d1fd542442da524345f3e257b5da26db60e0138857b26ca270b3a21dc8ae4. 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/ZAUM72002311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb73d8f04ba88e6114d8b9c59082a31ecbf0c76c8b41717c9e1963bceaf09d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAUM72202029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0950a6201ab419710e21094ade03bdc48da6d404926093a8360d54ba1e39adf9. 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/ZAUM72202032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad43f6c91587094ab41548f152a422bb85e97d85adf871ea1f35ccfae6bc1ca1. 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/ZAUM72202030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65baf8e64a50e006cd708e923c5f851077ce603b965add4393a081a6d33aba2. 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/ZAUM72300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b37fa67f794b05b3b02779ef728fffa2bae27bb5b18dc11305976f03f3a727. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAUM72300237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad43f6c91587094ab41548f152a422bb85e97d85adf871ea1f35ccfae6bc1ca1. 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/ZAUM72202030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c819965a6b85410b0169803adb8b314f6b8ea2761f10f6159dd029a790db40a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ZAUM72300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d943d58baf89666cc3908153ad475079807bbf3417942e76a804d2255f7577. 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/ZAUM72300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb73d8f04ba88e6114d8b9c59082a31ecbf0c76c8b41717c9e1963bceaf09d. 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/ZAUM72202029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc835d5ef602c87f94cb653e40cb94d20d74d3b1f90c7c41bf4bf3037a9a0006f. 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/ZAUM72202033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d4e030be15fbe2c4ca25d7e185d8419658340db4d99457523230bba6db3ca2. 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/ZAUM72202031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95212c937082a99357b27fe50a0537fa310a9b424f960bbab2e2c4115afe8ea7. 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/ZAUM72202034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65c0ed0ebf589b4998c53b9566c2f43708e3b084da1a59262e065ed7f5fd765. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZAPQL2200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cf08df2f19854371ade9c2bcd67b0031e00022cc321461f779e52f1b7fdb2a. 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/USL4Q1961804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc388f6a0fe1be99e6f7adaf4597f58223f5e61e2e1e9e45837181f30afad6a5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ZAJ811800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85ade3b545fe1f0ae3199d60ad86b979feb09bc14469d5ce4d44e0ce2fa5ed9. 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/QZNWR2347840.
Disco Damage (feat. Loufi) [Jayms Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ba11b767575a53f0fa02f6acfaeb40fe2659d2342339ef9fa59525facadaac. 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/ZA34K2301165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a35620d3711232356c2bf8b3673b98a997bbf3ddc82ebaf7de4840c163ac32b. 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/QZNWY2214440.
Doef Doef (feat. Katinka, Loufi, What The Faf & Wortel Kombat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6affa6b7b4d90a4828c26e9519f36721e5e24e4393b6d40f679516327ea008. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAA012000181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6affa6b7b4d90a4828c26e9519f36721e5e24e4393b6d40f679516327ea008. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAA012000181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8ff6991c5e78cff4dad9557ccefac9cb7cd6d96fdd3a1d08b042443f12198. 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/ZAKN83300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8ff6991c5e78cff4dad9557ccefac9cb7cd6d96fdd3a1d08b042443f12198. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAKN83300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8ff6991c5e78cff4dad9557ccefac9cb7cd6d96fdd3a1d08b042443f12198. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAKN83300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad4b89dfa168c5bf271ffa738cd27a643cf87d23a3bb8a4cc5ebc62aa18c04. 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/TCAHH2398273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad4b89dfa168c5bf271ffa738cd27a643cf87d23a3bb8a4cc5ebc62aa18c04. 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/TCAHH2398273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96658d113a3ac810706b1a21327cc1cf6c7faaf57feb552b3c5b5f761140aeb6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ZA3OA1700059.