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 0x03a8ddb091a4ecccbd9338a98fcf8b8ea9c7ef9b356f69976971948e62624e7b. 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/6703b119-75a2-46ce-9ae0-845d1a3a1ecf.json and https://artists.proofprofile.net/proofs/artist/6703b119-75a2-46ce-9ae0-845d1a3a1ecf.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 0xd1bf9a76577168dc63514888ade1217afb01227d0545b002be0f62f56fcd8c4e. 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/DEVH21800694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e3b3badb18fda0e69ebf5f1a8d1ccad4507e194c9e5e9b34a731b50ddf6b71. 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/DEVH21800695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a30d7c9ec2e8d57efc7a1a7fccefb907ded2feaa67649e92b56a91c2d986b30. 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/DEVH21800697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1bc2423c92142b8136abdaaae36bc9d54d0a9ca4d48abc8ed09fa797f8f8ad. 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/DEVH21800702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeec1999e73f57ef0cff137a91a66cd8de02690e5d191be1c33c34d13ed8037e. 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/DEVH21800594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd2afec172b66b3635ef84a9b2da07668f206d4cf11be96d2051f555d2e4587. 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/DEVH21800344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e2440bd147313b20bfd6ebf765cd8ee7676f54e954df9374e90ab50109a745. 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/DEVH21800348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95195e7bafd1c1ce4c14fefdee6b89d079085e5653c869bc36d2ddf40d5ffad0. 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/DEVH21800349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eba27f942ae1ec22ce80f4e65fed770c2a9d406336116cc6278ca866f39690b. 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/DEVH21800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c29694176fb3c88b96157e8eb25c321f2c62983b776b484db77c84cc093b30. 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/DEVH21800352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54687339ba4b065be3cc034b3f2d623eacc22f4edfdad101707d3aabc10b1ead. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEVH21800353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40c2c0a792b47ef51d82b873bd8d27bf20ca8c9d81bf2b9f2c29f757ea3d6c5. 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/DEVH21800354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e3b3badb18fda0e69ebf5f1a8d1ccad4507e194c9e5e9b34a731b50ddf6b71. 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/DEVH21800695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ae4a26cc671782b19dea0fd0d13273caa08004c276f8928830edc891e0dc89. 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/DEVH21800519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34662ee9804250cf3c118c5d2512d6fa7e0e9297360953adef4f57e46fbdce40. 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/DEVH21800521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ae4a26cc671782b19dea0fd0d13273caa08004c276f8928830edc891e0dc89. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVH21800519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e2440bd147313b20bfd6ebf765cd8ee7676f54e954df9374e90ab50109a745. 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/DEVH21800348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c29694176fb3c88b96157e8eb25c321f2c62983b776b484db77c84cc093b30. 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/DEVH21800352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e64a47c89b789f5e9e4ab0c4d32e41f6fc169c630c92d76afc7c35e1ec1c2a5. 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/DEVH21800089.
Café del Mar Ibiza Chillout Mix I (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0904c4aa536be9eecbcca5a07c1481516bd59627d1f08b29e219fa49d8113f67. 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/ES8742301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ae4a26cc671782b19dea0fd0d13273caa08004c276f8928830edc891e0dc89. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEVH21800519.