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 0x16e5be389274e53d5334301c116f840d8d6b7c7efb4f7d590b2179b14a5587ea. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83809dd6-2337-4479-97d1-8ccca4cbdc95.json and https://artists.proofprofile.net/proofs/artist/83809dd6-2337-4479-97d1-8ccca4cbdc95.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 0x7178e8de14eadfb290647977eafb6bdea7bf91bc4ddde5bd79e60ce6e979c5f8. 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/BR19C1302001.
The Sound of Silence: A primeira noite de um (The Sound of Silence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb9db435e303c45ac8049eae7f8a4d7b1cdc0e2878ca18d849517548451b9c3. 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/BR19C1302004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f62fdb56cde3d5cd2f07b191efefae15f72efd4840739fd38548fb57ddee81. 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/BR19C1302005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8253cf6812eb3a20edbe07a707e1a3cabee272c345541754e589d6522f1bee73. 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/BR19C1302008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12136cc6c16495a4426eb62918c5e41948ac591aa32e645d4d58256c44102e25. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/BR19C1301997.
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 0xe4e46ac08116c6840252dd8ddd62ca56bca8a1b150900d4892d42899dd478523. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BR19C1302000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9476a8ad45936719c43db5093f9bcc38a9f57afdd2b0dfe4ed4a8beae910717. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BR19C1302002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e96bd2651eee863cb23852bc3aa1596dbc1562afb0919811aa7419b9bf4ba09. 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/BREIM0400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfbb2a2d102a913ddb15c544bc57339b640867c144cd8784fd0d746a74de157. 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/BREIM0400011.
Blue Star: Noites de Moscou : Tema de Lara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190ca0ed3b7f4f88774fcbf660df44ad52650f76bc0f58a4f41c4593dbb8b1e9. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BREIM0400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec580c91213796599019653158995271351954a5824dbb4afc0c1efa11aac58. 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/BREIM0400013.
Tema De Lara (Lara's Theme From Doctor Zivago)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376284310edc44ca6d832c19a4e390729988a0ed6a4f2d0f4d0860f3cb40d672. 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/BREMI9800272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb845a0df155d5757276688309ce1331eb6c604e3904bdcad391c4f2114ced81. 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/BREMI6700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26cd5e2bc9bb47ec43f6785f496a82056e79151b63e2c486fde159448e745b2. 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/BREMI7200175.
San Francisco Be Sure To Wear Some Flowers In Your Hair
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f017fd9ebb495dc960e555e04588b6584344d2a7fff1cd2c47b06552be8ade. 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/BREMI8600324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eac4582e8d58bf45227b851da6b6f727c7bf87c504c5ef8d1b838035bd84556. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BREMI6300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348be48cc9092f2ca341483f1884129d545d07007b99779ae9a09b901e193247. 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/BREMI6700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a7a0402754f2eefd7be04a033ddffd972b84411bd10efe7019e1eb93c869c0. 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/BREMI6700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c719e5d6d21a50d00091bc08bd6dd6f85a68aac17fb61788eba341d03cbfb1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BREMI6600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9add3ed7530010947910a0fde9263bb618899b3d0956f508f818312b42e4b039. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BREMI6700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a8ce0c9a304f35e921666da695e222d7e51deab848904568a1ab72e11ac759. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BREMI7000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb9c5729485df94e2f4d8da21c1ca87c7b1f523b6a8100d576590d3d40876c6. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/BREMI7000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f43666fbe4960d1d673526ddd0dce465fbb98b7831b4182beaa1f54855940d. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/BREMI7000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7aef279b6635e97e2ff428fa9ac8a3b3c718047ed3ebccf607b56008ee35ed. 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/BRVWD1400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1664a52ce59c5230a54469b03b34b759f871f6b7bbbd51844113146e8281ce00. 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/BRVWD1400032.
Pot-Pourri: Blue Star, Noites De Moscou, Tema De Lara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e11614c2df0ef298563bd62b8299cab8a492a24cdea059222c07cc9980de728. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLRD52343490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf031a43980b65446ec03f8f90172b3be0862cddbd03ecc3084cb56f7bd6950d0. 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/NLRD52346578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a33e785e68adcdeaa50e5646366f6cd527148e96f2b538823f54fc05d0312d9. 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/NLRD52346579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc022489dd8703d7746bbd2fc84d5ffa11bbcd2f75cd67d6e55e23fb44faef27c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLRD52346582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70830638253b46c3623448cc7cd9197ebedb87262d4ec1321a2544f17474f995. 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/NLRD52348669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc918e9a7cc4b359899214df93acc0eb5e6387efef5779855465b13c7b5774928. 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/NLRD52348673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb345554434ee15cc728c1c4cddf90df57d29f1999e28868dd646728e14673c9e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NLRD52348658.
Nas Ondas Musicais da Surf Guitar, EP. 2
Nas Ondas Musicais da Surf Guitar, EP. 1