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 0xfe1ca3607b2aa6130c5f7aa8819dcac9aa989ff060752e572c758c2d88b85e36. 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/b149baed-236d-4182-8a4d-70fe33d2cca8.json and https://artists.proofprofile.net/proofs/artist/b149baed-236d-4182-8a4d-70fe33d2cca8.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 0x566f668f39e511d8864cb97851599841b363b4433ce5b2b4906c8fbf54c4a560. 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/BCAPW2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd50622df7dc55ac5bee81807d73076958ad8577a8ea3816be236fecdce04517. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BCAPW2100004.
Vem pro Baile da Selva (feat. Dj Isaac 22)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163c36fc3d5aec0d5f564b767d1b51b584219310aab464c9aa0f91e0d60227e7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCHTZ2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc512d00fda610e46e59348089056a00e72e8a4bfcf4c77523113cbf7a68f02cd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BCAPW2300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113b4de3d3b6da6a36a14adbfd8c3cba013cfe69349dafee62600430fd44d9f3. 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/BX7O92300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a7fdf52151e1c023a726b9c5f8b24cac94631e000850c37b32b18bbd5ffda7. 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/BCAPW2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9a87b8966e18a19bab379cb401c761cb74c24abcce0202dd5e033b9b21c2fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCKKP2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500ee4669ac6a5eaccb0cf16672acb69835d41102aeb2c2dc1e3eac171aad3d4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEY472573849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f60b5d4683b80a97390a4fb6eb42ca34fead1f0f88a83e06453421be7cfcdb. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/BKQZH2500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b80d3abb32846acee2067ee79d8156bdbd1f7d2b78b9524777bd3dd8b73cc27. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/BKQZH2500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe57a0a361939e95a2c00f85b52a9fbd9fda1844bb978f8c450189d4ab66b9b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:17Z), 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/BKQZH2500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66af104d853a7d033aaac055d3d7a11906b188a9bfea0b5f4da453e3e38fa18e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRSME2301160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f208e762d3625869bf3fc4c618a1f3a5935da39bc7b8e27331912a6620d7d2b. 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/BCAPW2300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd4ce8b98020200cd51993ca4eb3ac0c73a27a12aaaffdb6fb2c3de416a8dd5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCKKP2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf659d7091b6b853a30889622e33f8c6a459f12bd3fbcb941a7115651b94e44. 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/BCAPW2300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209d03d482c73dfaa54d0c73b9ae6542ab52e196c620cf1397004bb906b82ef2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BCAPW2300092.
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 0x63de195f9df8423683aac275e8dd01bcef2a4b4c1a13e66ba3c343aa88576e7c. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BCWK42400014.