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 0xf43bed6c3a2f987e3697c93f4da8cc173cb98291900a4364a5d617af42710fc8. 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/d13a91d7-ec75-4f8a-8aab-47d13cdc2dd6.json and https://artists.proofprofile.net/proofs/artist/d13a91d7-ec75-4f8a-8aab-47d13cdc2dd6.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 0x22c6046e82f168cfafc1b8a47c8911494b375b5d52311a3816dd5a2a8cd5f926. 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/GBEUE0801211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd803609938f48281061f003cba93379ec2ba3603a6a943698ae70a783781752b. 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/GBEUE0801212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5936358daefed2fa5fd38945f8d1504fd4a13fbcf56d3c0965002c3441308c3. 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/GBEUE0801213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783fbe5018a05e0ef29d73d739f40ebad83c81fc116853500479fce1d5755d06. 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/GBEUE0801215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd885e25a15db8c0235512aef5108cd3401cf4cf74a8441fc4ead27e49f696257. 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/GBEUE0801217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60283e6d5d48b7e8b477bbc31b19c50105bb6f607067a24fc30c131eea02b4ab. 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/GBEUE0801218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1134104e725fdf1e1ed06780d98b09f19a595dbdee11e8cf0893f05040f0960. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBEUE0801219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c69056bf81199f80232f5c889f7434b023bbbaaaafcd60017da1c7cd015914. 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/GBEUE0801220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d0b307304b670658aef6c09a498a6c7a412c44ef7506f07698d633eeac12f2. 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/GBEUE0700643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b0590a435fdc5ea7278a9ed77dd04448833191c028879a8e5239de22a967de. 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/GBEUE0600436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475a83aff7e81f77dda0256d77f57f72d6ac29f4ac250f7fd68e362b0890d948. 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/GBEUE0600440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a17768742da48564c7dfc2807362b5498a9fae7c403c65178759ffd38c87cd. 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/GBEUE0600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc39a7cd59b20e1db7779b9ced01de0994b7a7c615e7939be7a7093b8392c3f. 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/GBEUE0300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6b703f1c47251dfa9846883addcfc090b2ef94c7c550b09d2d7fe1959265cf. 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/GBEUE0300451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55f1ca94ed4b566bad0d7fbf6389b2364274715c4dc7164d774a94caf675ceb. 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/GBEUE0300452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0d6fd3e50dbf356847eab74a8a7424411e4f53dd8aeab668663ed1cfd070f7. 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/GBEUE0300453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4523aaebecbf86b41614ff1a9291facccf239b56c4a6af78e5bf227a4e15ec4. 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/GBEUE0300454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a8c679a78140caf978428af63466b4b08a9282e78e5bd210098ef771450c4e. 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/GBEUE0300455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaffdeea493b59f37383ea6aa4c59747a8d35c6063dd2e4d530cab7bd2165e2c. 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/GBEUE0300456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43bd08898a78180783f250a7faea39f98b24eba2ea14a1354307d9630adb477. 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/GBEUE0300457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ca11bfa484408f83d7d6f670d9bc5e1f5ff5339f7e9f93b9aef047059f3908. 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/GBEUE0300458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488f37a16aac40a84a9d14a7271e3d6596fc43a29536fee11e1f07ded59a7b9c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBEUE0700850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355f84b54f75e331de99241b4062d81be2a771bfc039c02eb66ad477e8415836. 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/DEZ650521328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f2b47d28df4eacdda6af076fc491502cd9aaee8328f367fd46116b1b88b45b. 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/GBEUE0400026.
Chill Out Masterpieces 01 (by Hotmixradio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8f3413276893f9339d418e41a75027294e0c8ffc1d91492895ed4ebb09c86. 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/GBEUE1600248.