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 0xc305688c7a22f45180b367a507dd75c9bb260e58bf6f944ba8ab362c675c7b2a. 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/360ef208-45f4-49ad-9eba-aa6688e4d677.json and https://artists.proofprofile.net/proofs/artist/360ef208-45f4-49ad-9eba-aa6688e4d677.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 0xff1c6a2fa6dc69450dfb6bcbba6d3abb9f2c5a52d4ad79d578f3b4e2896ba565. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/BRSME8500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba2a091dac406755fa25a28f800f82bfc00b278001583df9ad061a1138c304. 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/BRSME8400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c3d808a326577e4c9f586d495120f2babfcded62fc704062bf9121b26bce4e. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/BRSME8500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757b3052868bb7e4d88095fa0448d48689c2c9ef727004cfccb934306584d091. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRSME8500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6748173db6c4fd7d82187d7ac5fccc9ba860cb7dcd1c58b8b5d5c9ba86ee9c11. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/BRSME8500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936575a6e62ae4dcae2068b011b8b403429c8ec780f4093593fcbf3059b2249c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/BRSME8500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7d7d409b6d1ad4f4fcb4caeda9d04477f786ad791ad63df25ed9d2819953c0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BRSME1500811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19de15f1d0208f08ffa246c3dc0cb9b312483971deba6d2cbb803b3da154b07c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRSME1500814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56cdae7b0cdd6b2559eb729bea9d7e163ba9e50886c1cb7d6ef918dad44ec92. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/BRSME1500815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0386b5f35be0b4f7bc39a9ef5fad14e952a3ce6f761a5741ac91d786eba9ae6. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/BXVRG1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e23a8db81a24ba6366a83eb68e0616583e107801cdd59cc8cfae605adeebec1. 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/BRTPA0200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba2a091dac406755fa25a28f800f82bfc00b278001583df9ad061a1138c304. 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/BRSME8400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7d0cf79f011407300b4d7e004ed9795c929140ea66ab871a9860d86c5edc4d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRSME9400828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7522a2a7f26f88bfd03b63344238b7180fb21e5cc0bd61bc1d8ba8a8a9317d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BRSME9400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba2a091dac406755fa25a28f800f82bfc00b278001583df9ad061a1138c304. 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/BRSME8400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133a9918694e5d5502e8c07c85ba546b293e6c28604c658e2279ee91e257f92. 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/BRSME8500088.
Não dá pra Parar a Música (No se Puede Parar La Musica) (feat. Metrô)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a0bd463e36b954fb5ae0de81ada0aa0ce00af25479fa11dc51579e6abf10d1. 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/BRSME8500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133a9918694e5d5502e8c07c85ba546b293e6c28604c658e2279ee91e257f92. 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/BRSME8500088.
Os Bons Tempos Voltaram (Você Era Feliz e Não Sabia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133a9918694e5d5502e8c07c85ba546b293e6c28604c658e2279ee91e257f92. 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/BRSME8500088.