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 0xfd57e9499dc7d9621953509674d010522e8550f56e12ef7c6206e5d9bbfeb996. 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/032f4933-0f24-49bb-8dab-ee4c0856a3df.json and https://artists.proofprofile.net/proofs/artist/032f4933-0f24-49bb-8dab-ee4c0856a3df.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 0x8bbfd06e0b55c94746ffcd154e4832db6f9d6f158f830283bdabffaba2ff9a64. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBEUE0500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f55adff9e3c8a33d180800f329566ab1d775493dcdc9317518c2c7609148748. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/GBEUE0500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4364e082c4b0ac5c78ac8ea011d51997177eb4b50c7fd4c839c6ffa993e89ab4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBEUE0500390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103c28cf7641660d976e8cea450b0a7ca50ec8789ec21c74413a24d61d640ae0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBEUE0500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a96b56ccb8663a2eea8abd913f40ee382a739c098511ced6adb0efa797145a2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBEUE0500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079ce776922a01c09ad44e40874d635899d0b70c8fbb83ca46f884967ba20e5c. 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/GBEUE0500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b43aef27e5375c6d42c0a093473d3d73a07d064375c63ef741068eb4793830. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GX3Q92525162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f053d5d74d9b4e954234b0693bd00d504539b7ef7259128d91f486d2c964288. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GX3Q92525163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6239c41ed439d28282c318bd5392a45772caf64874725fa88018509e90c634d7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX3Q92580634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a95fcbc417d6c57713dab3e929d14ea93f85d0c421642efbdcdd6dee63e0daa. 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/GX3Q92580635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb895ddf0ed9b12f4fc3ecddd176e31b767a453dd1cb531887c0d42fba9e72ba. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GX3Q92580636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981d73311a612058aa51e051a95d10b870b949b8afacc213bc234db65a9fc86c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GX3Q92580637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d967609e771ab5aa1275419f2f3cc10f829051e35b6efafbf361d8644bfe43. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUBEC2598011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279bc94b1fd81f2ebd2f2626ffa6f8f74fbbc2c3bbec0c63bdbe0edd23108b0a. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/AUBEC2598012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7397c1010dd8b3b5fcdb13c0a111e63542dc425a71dfff276577821f1b7745. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUBEC2598013.
Dim Lights, Smooth Chords (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136106715bc793a105d9c02cb574e1dddfbe939082073974af37a2df4f4dcf7d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/INAE32500480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63229575fb75317ff415dd4f7f9e3bc5cd5e2799bf559437d0c607cbce0195fd. 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/INAE32500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb31226b9d8949e5968a1e311d68c034fc6b7fae27ba3ae8f459542f2b1d3584. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INAE32500484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91029404fad17d89f17d414ed77de0cb319ea064fc43b5645811be2ba67319e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INAE32500481.
Chill Out Masterpieces 01 (by Hotmixradio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3320f687dc0f8ebe3e9becaddae74a6fca684098aa04ffa8eab063196d408e5d. 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/GBEUE0500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3320f687dc0f8ebe3e9becaddae74a6fca684098aa04ffa8eab063196d408e5d. 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/GBEUE0500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbfd06e0b55c94746ffcd154e4832db6f9d6f158f830283bdabffaba2ff9a64. 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/GBEUE0500386.