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 0xd3a31e06c3c1d75cfbbf01004959a9cab3ee748333817382a94eb15ab5ab8d32. 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/13981193-bee3-4704-a1f6-00b9b714b65a.json and https://artists.proofprofile.net/proofs/artist/13981193-bee3-4704-a1f6-00b9b714b65a.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 0x75e5be7037dbbddccc790db817b64ff69653054140746259f3da92d95275dffb. 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/BRTRB1741927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22b9a7f7208fd0c0688363019897ad54b7bc4cda94a221992280487b6070f9f. 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/BRTRB1741928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda27c2bee4e8dd19c1fa4e251a7b2c228b45469200b4a724aea36bdac3bec507. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/BRTRB1741932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45035198d37cde076b9fb7b5a1ccd94c730613c3ea6a532e321a80788dfd15de. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRTRB1741933.
Movimento No. 1, Concerto de Bach para Rabeca e Flauta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576410c92e6a059a461ed564814949e8a2e02822e7d815ddae8809c66d441abf. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BRTRB1741936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344c41ea660e31720bb7b2b04f6e286f4177ce2e67dd8747b036d32e97ee4714. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BRTRB1741937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442e8a5e71efc40aaa3911e9b33e5651c99efa5a04e62259dbd935b18e60dfe1. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/BRTRB1747958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d93546ff85dee6cf61a0aab5d89cfda5e7ad7c07967391a95bb877d3643465. 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/BRTRB1747960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23d4c7d707c91ac5fcc8990aaeb02bafa8d696f9d6310af70b32d4e45eb32ce. 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/BRTRB1747961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e30de9b9b1307bd58159260514e7d19e780a703c4234c47ae6b96bc8c0d32a. 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/BRTRB1747962.
Madeira Que Cupim Não Rói / A Pancada do Ganza 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec2594abf80f619ecb7318a432ee93b7c785258166a648678076df6faa7c18e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/BRTRB1744681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0393849e8baba8b498bd8bbf8e6bdae023489326cada0e662acc7016379d708. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRTRB1744683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5a5f44a841ecece636067a7453c1c9d3168f7102ce84087bae8d92ef7147c2. 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/BRTRB1744734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866e2f2cb8ff6804851ac790f97ac663c40aec1e2995ee6e45aafd58bcbf23bd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRTRB1744738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a8e259356ea8323e5c945726e9981c6078ead94076159cb0e3bba95df068a3. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRTRB1744739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e33439b2ff142b3bed8ecb2667fad4d711325272ec1dc462453c9b4cf9158e1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/BRTRB1740921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582767c15dbfaa9337fa8bcbd1621f92774f02e00c1fcd1a4705230926741170. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRTRB1741720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e75edfb735ec338efef5fe4c1fe1d06f28f9ae5c7405a2a752b5dde2d22874e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRTRB1741725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be1f0120ec74f396e8752e7d40bf3ea6dc8791dbd68e8fd92c2d3d84e972c47. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRTRB1741727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e300d3d45f262eb22e76ea5d9955b5207c83dca5ac7ca6d51382f83685b13bd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRTRB1741738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d0d434a0ae68de560b67f5d01503b80bc4c7ec8bbe015ad7cf821a0fe15592. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRTRB1741743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413affd77b8c3bb3f6d2754132460e9d7bbe1e2102c01f735cda1933b1f659ba. 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/BRTRB1741908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fa850e8614ac6bec2ffe39993003bd7d8f1281e71d4ed0271a1e0c0fcea646. 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/BRTRB1741916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6563d1d9800bbd22d64bf3d675d178551a53b8fa996e91505373b62f7cba8613. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRTRB1741917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebccba324c44c6701e517c01612be3732e953ee67feab0407a7524b2fbba55c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRTRB1744745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568608936d1bef9766ced59837b8513f2f0e5e1722d3884b3cb38380a5ebf1f0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRTRB1744746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0497a6eaa77712e07f9afc49e0445d7706a7388303115465d26b1254a196c401. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/BRTRB1744748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985841bd0a36813609432cd1a3625ee4a075c9a1f73f1aa442f96d11bd1ea24f. 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/BRTRB1739354.
Minha Voz Não Silencia Porque o Poeta Não Cala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770f1834b25bf8d50b3df3836e5c15a9ae018bfe9edc41ac94350bd8a8d3fe4f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZGLM2091535.