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 0xe330e1e32b6fdc83d58b282bc7d30bbac0a32a20735c822e5f5de14850a1e278. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6174ab3-c4cd-4b58-899e-c54957e9619e.json and https://artists.proofprofile.net/proofs/artist/c6174ab3-c4cd-4b58-899e-c54957e9619e.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 0x56f1e0986805ea858bb55c200923eedb38e4961e116357c819815971bac782af. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US83Z2509442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991360dc0167789ba68d97dc402446e2dfd1d2d2d92ce02f12ee28689d22929. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US83Z2509444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47f52e6770bf76185fc7721203cbeebce86cbf2f891cb6a330e4d499f82b742. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US83Z2515023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d44bb5b296599a26cfa157fe84d577c235499007f88f20ebf1b89075989f75. 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/US83Z2522606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494ccc227d075db8da156ef1b4a6e9cd61eb203df450ae00fee7a6551d29131f. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/US83Z2522607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c36e9a696aa12734e092e7c112250cfeaf891d6311ee199e1d8e5b72f2d51bc. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/US83Z2522608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e4019ac07d15b6832d5b0636853832775b50f0a71ec7e139f9cc7a461399b0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBLV61917006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7cf1888121d1f18b64cca2e7c3fc29bb3025a4f7c11eff25b519f0a5dfb583. 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/US83Z2461493.
Espiritualidade - Weird Sounding Dude & FM Dub - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d5f89f521a49542df910b3870a63396e883556147e1202f6db5ef2844f7bbb. 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/US83Z2467549.
Something This Way Comes - BIGz, Freedo Mosho Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48b712e9d5322976a4bc39678ed033072152fe4eabe0dd5a54bc45ca90cee2f. 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/US83Z2474798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7150f344d5d7b19b6bad7406ec589bc28e12321c66e8dee235f9618caeea6868. 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/US83Z2423221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7150f344d5d7b19b6bad7406ec589bc28e12321c66e8dee235f9618caeea6868. 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/US83Z2423221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991360dc0167789ba68d97dc402446e2dfd1d2d2d92ce02f12ee28689d22929. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/US83Z2509444.