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 0xb07fc93172b93f65e9bb37c477bc0ff26e8eb429a5cf4829267a922cea693ec8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f943dd4-65e9-4cfe-8ea2-a1214224023a.json and https://artists.proofprofile.net/proofs/artist/5f943dd4-65e9-4cfe-8ea2-a1214224023a.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 0x106fd66da8328e170a0c541bf1ce082154c001d2d33f20d862c76c0ff3ad8fb2. 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/GBMA22432056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0a80c800c892560d99b9247e1821978425b6c261cf7aabcfb1475b763321ec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA22432061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf678fb5c7958467160134fc44ff1498301570ca7dfbb94848d8eceba9b0b614a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA22432062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30abd1a720e65f535aa453237b4309e800fe3dc9d3b2ca053e949e709aabfef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA22432064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6c8ff9127ea6a567a1a5f278b732f665b84152f5fc8402bc68325764117889. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:07Z), 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/GBMA22432057.
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 0xbcf00fc7d6bf9c6d84c462f695bee91b20aefeb10e4688faf48e268e1d68e97b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBMA22432058.
Na Ceannabháin Bhána & The Mountain Road
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacb34c00c41a2a0b258c0b3ea56bc65437ad580ff41be96b134fb1e9fa4cfce. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBMA22432059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c48b29cdf23ae8e03865a0f3a780068b893ad5814095ee76312e2ddd113779f. 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/GBMA22432060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4ea4eaa116d223aa35683537470a9324b82724771a6e8838cbc78993d5e610. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBMA22432063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32d40ac80e3b6fbe718427d00e01236c099ae0cd367516425aa8d49e9ddc2ed. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLFP2266455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98c2e2c5fcf4dc30ec5d0bc81efa7614ac56035bc93b0399a98c7c74c2e37f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2266457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8400c31421136e133976134cc353006aac776f97db8765127edf426ddd05a5. 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/GBLFP2266458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180cc893853eea13292b44fa97271ea43a95c67fc81220d44001ed08743a34df. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBLFP2266452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d524ce5c0999690c2dbdf52871e31343dd17640a6bf8eed8d47c1d78489377e. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBLFP2266453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819923fafa8278e5aae9c90c64329d8d281ef2f0179b53c3f96595178a77cea3. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/GBLFP2266454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37821477b695b6ce456b73bc9ba62f0616c732b4a21431f42f0e4848f0b65db8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBLFP2266456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d359aff30c7349cc0ffd15fffd82833c72e4bffb599c21337a22a35e7f228a0. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBLFP2266463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccaf5c9aeb86f5292d7597cbe652dc3d8957383e60285e60bc27312abca03f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX53U2038384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c72e7689580f7a65f661e1c394e3500279adf18abce7e2cb8887eec08e84151. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2031085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48898320526288a10dd898376d65e4f5dc92f4f98a34ceec9576dfd4f5af40a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2026275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24572fddbe9a26ac574cba764c38067a42cbfef5e278ce2d7605ecf101f29e01. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2031099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4013d93012008d1ef2754b449fa3a1769bc6b45e1f66e086ac14d1c8c69fbdde. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/GBLFP2031111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441d8a042b826a314df6633e041d2d031cdc795e116812fd09333f0040c1b712. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2031121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0de99a97fbc99f2f349d547a02626c7a328aa4d6511bf846ffe62b52a3c24a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2031149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebec60f4c12e00786f256fee6156e4113219691c7361e99ce880507d1a09e3f4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLFP2031096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96ec5e24e0c6c7afe758ffffa388d90fe78d82f3570c97b4143ba8ba6fbdf3e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GBLFP2031102.