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 0x3def9756299826e66f79517f3766be641381f364360bbcd24f912ff0a4518e01. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7658ef46-d5bc-4193-9eaa-8f7149a25272.json and https://artists.proofprofile.net/proofs/artist/7658ef46-d5bc-4193-9eaa-8f7149a25272.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Senhora Santana (bendito/cantiga de ninar)
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 0x5ba3b0f45efa8224aa38f52d0ec47f9d124644b9f7391744ab40f91a68d8dba0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRMOO0500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4c5c9d57aea6edcf93a41785ddab6846fddbd1a76369d5f141703f72d90b2d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRM0O1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a038737d3f54d60814e1f00b2f7be76f414182fe210e243adcc7a5d88996d6e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRM0O1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a812a597255eb92b3b5164d3fd8b658d5ee93714d865c31ac2a416b16a6b811. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/BRM0O1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87de1f1cab96cd1097b3fc6e281241ba371a87da6784694519843936833323b0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BR9GN1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4abd0b90649fd665b03f8c98d479b1e8a230d0a39e4a08f0368db38c5efdb1a. 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/BR9GN1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29168d93b807a3adf056b81d4c37f4f2e419f6d36c738039035e82fe88a1d135. 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/BR9GN1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12eeb00add37e77de3ba4b7e738f889f5b7a1f5d6eafa096dae5bddb2e1f244. 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/BR9GN1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4bfed1642f7d3eab62e723d702bffd7b02097866713ae45ce0e402c0153dc1. 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/BR9GN1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd84e3d84b2f0e7aae0d4a073443fa5951ce98b4ead88538417903ce20fc3cd1. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BR9GN1300009.
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 0x6d6ab9ef26ec8329a70398e1c427fd92165396119621b930ed262c12881c38f0. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:33:07Z), 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/BRM0O1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1fef7990f99bbb2aa7e74cf5f0bdf121ebc3dff7628aa1dc5832ed521517ae. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BRM0O1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfa321e912321d7a072fbf26cebd6bc7351a488ae5d93f40f643a9d79769633. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRM0O1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9e499a0e7baab5ebe6e15c3d54feee8499d2ed367fe5d01baf15bb0f6e3eb7. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:29Z), 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/BRM0O1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea85dda3d13b5097e98e9a840b298d4e36fecbd7711a9ed505c2c85654c4dad0. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/BRM0O1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1e746359b36eae89518ac123fe2e63d8642851ce12644108edc560038c5d24. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:38Z), 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/BRM0O1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec5680e84b5e0e5c2781cfe6ca81e4dbcfbc9dba122597b537564c5c089e537. 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/BRM0O1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c438ca87285ea599b35afbaed836fdb6d7535e50c6c47e983c401f91b310f17. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:49Z), 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/BRM0O1300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e9b9ca3f8ca6879e523a1b29eab5dc2659f01aca736df5f6ec59a6187a38ba. 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/BRM0O2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fddda546fa9cc19e1ba5e802328a40eb5e6e268c3d30e14819b1c8071d9d9a. 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/BRM0O2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe5ae25c406804c02de689129564774ac678d365b1b337693cb15c94de17ae8. 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/BRM0O2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a26f731ef1f4e7a7eae5c9b2346d50433751f8ec20d16b02718dd3648d896e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRM0O2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0dbdcbbdd66b9a97f6e5d31e866d9f1d1914ab6f75583d1e353701d7921f95. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRM0O2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b862fc2c3f4b010b16662deed1d223e9812d795bd2ff373de90f8a8d549642f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRM0O2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305b08190f548f79562dbbac2da7e9bc3b7644797b29bafc8c3836185284ff36. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:05:05Z), 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/BRM0O2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae57b9c65d266075a2f4dbc200986f2cde3f290b6a296857ab47e397a398ebf. 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/BRPOU2000096.