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 0x3dc79f7ccbf8257df3f9befdab68e307d01fc2d3c46c4ed0670d2defa70aaa51. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40755c68-839f-40a1-a775-9185648ddcc2.json and https://artists.proofprofile.net/proofs/artist/40755c68-839f-40a1-a775-9185648ddcc2.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 0x75022d5f6e1cc584e03cb508f153d72d64e9a51179315e67bfa5c9323b049810. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRBMG1904082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49dd6ed85c5a735ff64dd84dca68a42197095933b766c6ecf46e5766ac81a03. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/BRBMG6100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d324f931fb65e0eae863827c9d9b3fafe959cecdb240d050f81ee9c58939ec. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/BRBMG6100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6ed7ffdb509cbc030f5f32d85d1eb351680fef41a3487471c86ea766b08d06. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRBMG6100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4eb0e844acf7ebf0bd759aee9aa560e544328142bee796f1f45801273bd487. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:48:08Z), 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/BRBMG6200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fb96fe4bcfbdb68f24b915b3231b33238704269c965acc26449100e5efc507. 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/BRBMG6200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd492b2d52c1fb158bee5238cc1bcc67465484b6624b1c239e954f19d2d16391d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRBMG6300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce78cadf0de9a6e8877a656ecb4daa19d4d6c6975429e4399617d7a32f49db0b. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/BRBMG6400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f1fa5c3c172940bcb072ff1c63e47f18112d46a07dcdf3098dc8b5ce416e3f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:25Z), 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/BRBMG6600112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b6abbdcc300bbc8396c437af22730d63c0913e90e91d502e64f3ef9effe468. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:01:02Z), 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/BRSME1905179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10642af03bd3b04f80b9ee2648646512b3e4345db7789cc15c27b733bffd85c. 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/BRSME1905180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe88ef5d64665e7bd3927248da10a079dc24ce83048e514a3cf751bb3774ead1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRSME1905182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8061295cb9d49cab4f47fe267417058a609474af637688570900d9ab9555d075. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BRSME1905184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80178cd16f99203525506640aea23107b0f8b23d34ef9041d184642478744b6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRBMG9800788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78643928fa96bb5d3cea4779ba5bc9402bb0f601c9c6f900611c79001e3aefb1. 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/BRBMG9800789.
Forró Dos Compadres (Forró Das Cumadres)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae93e0a1c1fc36cc801d6f286f8a8b9dfd9b3f3dee6b2168cca6b7d7988e46f4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRBMG9800790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a32eac25ce3d52f7182a15527da426960931e368d0e5bca4eb5f87e297e168. 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/BRBMG9800791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c3c235a3f0180378266408cd20f1b927b373d6e1e62136c7c4d0a1c478f0df. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:30Z), 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/BRBMG9800798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad83cc63bd2c44659a1e0c5ee406f7f50cc04371e31a5885aa1b02b8106c3e4. 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/BRBMG9800799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23f8d2e2548686ee3b5cb9fdc8e3ee23cbc2e1f133c4c8c69699438921be229. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BRBMG9800800.