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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb751fc4787f23861a0444116dba1513ade3bf754ff3bc2bac7feb7c45ad06356. 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/bba024ab-6422-4d73-b365-02777c9f4af2.json and https://artists.proofprofile.net/proofs/artist/bba024ab-6422-4d73-b365-02777c9f4af2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609df4577e6998f0ac82873d22ae7b83f85066ad7123440747c5520510a8e551. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/BRUM70900942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962d527873bc678e43348a281c6a5866d8c4e3caba1f1f9fed29795b89858f8f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/BRUM70900945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc954a74448d9e99972c892433e09a73b18ba0dcd31b96b898a27099b40224d74. 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/BRUM70900946.
Menino Da Porteira / A Volta Da Asa Branca - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cc0b6363c7ad22e34b59f307e57311601cfd7cd8b4ffef7c39b6d739b78849. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BRUM70900939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eae6941dce3ea0aabc09ecf20ec8d0c57d543fd22fc036e63824abe259cf8c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BRUM70900950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1368c4cdc222dcd3b31c8579bde42669f4cb3aefcd8a2e19f6439ea22462651. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/BRUM70900951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b65b32e7a631bb011bad7e8c4be806f52a4b3cf4b21fbadcd50e7e6d0cf244d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BRUM70900948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4007523956f6e6199967ea882938b96638bcc92a746672d4827629f95b339401. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:17Z), 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/SE5751858694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516860acf6ed591ecd1dd3049c44d83155f04b8f5daff11ca28e9c086bedda2a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE5751858695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b844b46987f90b77edb5362b23b2da68bc7ae4faca745022cd1425cf507270. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE5751858696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcbfd4c483e20db4453c7136cb8b0731474df45924c36681e1b3b7c65880aee. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6A91828029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb38b8aa7fae3aaef4466f8a08fa7a26151463e6c133430aea9a1243a3fd5cc2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6A91828030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11268620ecde1d1533f101d520ac0fefc8f49282c7c64fb3ed16a2d6da53a264. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE6A91828031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791e3062825c57635fba95e7fa242e7e70092af2bd475d644fbe403b720ee8ae. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE6A91828032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbf4db90700b6c030f78af8832ff049c295e1371d358576e762f83c67de39e4. 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/SE6A91828033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381d99745ad9958ea5ab3053021c6872f0805e43705e5e9c5f6dc1a1ec1bd68f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SE6HN1906814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c21856aff7acb19f485ad187c9866db0f1c1b61bbf1c0c884af5374d012ee2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6HN1906815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f59e96bfb7712806fe93ad6d3bf96a8aec3f043b0d7c37c253bc76da9d1a1a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SE6HN1906818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a87f92b785ebe27d13a9d38ab36b9d3bd67ae96ce09324b9560e9c954e4ea1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:44:22Z), 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/SE6HN1906807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f05a130070b14e5d31a29548bb999dbee439b747420b42f858b2df59c090dd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE6HN1906787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e989939f421c97c533600126c724527ba193355111f27e68f1332573be05a7. 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/SE6SA2290473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54d62a3f844de701292927416d524979cbb45f93b173fcaaa85ef3fe09a4121. 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/SE6XY2299145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45aa29de3acdfa8cb49ee97226ba319204177f97a2d798ca614f04c39a0916d0. 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/SE62M2253313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc880ca644ca79042c41ae5ad11c9bf9453c43f495f8d5eabf5aa46e60e6252da. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE66N2215549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ebf11a2d2ff4703a9b3a0dfcca084bafdac773c415eebeea6a7b0e42246751. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:33:49Z), 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/SE5752346692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd432f400d14208a7f799026e1c568d9f9983ca0d9e8b02ea756c274dd7a1063. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE6I32309226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c72d286c76cb083244af9d9d9ee6c2a28fb16535f17b5e943bb34da7236fae. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/SE6TI2378762.