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 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 0x0f6cba0123e29d1f60f22106cd18452063f2110f2e949fbfa5c0e8a2d7f93b89. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11500f86-148c-4cd2-a790-d2e280b815d8.json and https://artists.proofprofile.net/proofs/artist/11500f86-148c-4cd2-a790-d2e280b815d8.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 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 0xf7cf76380c4042d0557257c51e3f4b72c2034489247c2a396f9284070aa0ac12. 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/CA5KR2405204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a6263cc952e89e1f3f1b755b7099d264b7fcf35f19d9957ce8cfe39ed3aed6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEH742176769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9530e2ddbece5afb60da9eb1b9f1ce3b2f613e37ef61080519a2f8909f7e41. 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/DEH742176770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a5018aabba0860c925a8ed24305ecfc2bb5ab2f4ff9e45fc553563051c1dd0. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GX4R52210122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2701a2b311140e0e188322ef63a06c7dbab8c3dc29cddba835bb415a91f76788. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CA5KR2304351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2ddd92ff50ec6b00fbdee673c14544c8767aeddf8bdb6eff7c81e545bf4fd4. 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/CA5KR2304352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ba490f34d596c2f01e6fb47639282116bb6b5ac00c7b1220be86028d25b7e8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CA5KR2304361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5872246cacf2a0f5337de0438d3545c55ff3bfb39c911fc7ae1397f6b935380b. 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/CA5KR2304366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486c89035ca4ecc0f43034ee9810be05e3cd1503183cbb0bea85d64e0814ccbc. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEPI82323182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d9683d1f79e08bd67b0ad3305053860fa4e9599688f3e99fa0bd9d855b8e62. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UKN6K2301229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675a79de1293ee65556ebabfb88ca122f4f3ccad83029321a895e6d8e7a711ae. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/UKN6K2301231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dca9e14bea32868e7f469f694daa97f396193140fb89b13b4ce366eb19bc0f. 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/DEH742230769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd693d1d81fdf46c84df1b059af012214d0fe3e5ac2ed25eff83e43ec1ce77d52. 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/DEH742230770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba1e02e6e66069410f24e3b7379e4e375f1cd91fee2de80d7548a34010a736f. 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/DEH742230771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab83be0084839fa93fe6b180beffe7315fb60ce52df441b303a41108bbff6d90. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/DEH742230772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e5f794d92cdff70d2df087d8aabf5c8569530a4e9bbc6500f0d344cc099e6b. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEH742230773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a041e10b0c8d81336e51caba43419f50b65ec70051d759356b575446d07337. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEH742230774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33f42d63a7b87fb72b69944c78b3d780bad604d3e4fc2319f45dce52a97d0ae. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEH742230775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb044a76a2da289b25d3ceee4dbc7521bd1089af2321e0f56d70f1bf330ff6a4c. 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/DEH742230776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd26c22be4facec528af155c8607c94224149b4ae9202b422f0cbc5c20504bec. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEH742230777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176346507c1d918f906831342ad0e197ab9612eecaf97e208dee0e9ef7b0123d. 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/DEH742230778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730353c1c59977e3318a9d04f6ab0108b81c519d2df82afc2810ec78b1610dd1. 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/DEH742230779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50826df92057d9c856d32d4a4f57ec97a8c8383b272520fcbbc48c6d27b76b45. 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/DEH742230780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4df80416f17b01b3dbae5dc1c7187fe331b769556ae12789a42c7a113b4a1d. 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/DEH742230781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b144ba5b44b8b619c7d523e3cd84edf2cf0cfb28300b5fcbe719f5e09538295. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2320882.
Les Bonbonnes Sont Remplies De Cocaine - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f4a2b935d265d4c385b72fa6a3a294c8c3912a5ccdcfcebe1597fee0e39784. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CA5KR2320883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3528310b9a8915a50cbe65894d782c3f6807dc130219c43708deff3990bbf51d. 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/CA5KR2320886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4941047ddc46bbc0e94858f26e41338260834d87d9ad05897a7ca362f0505e3d. 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/NLCK42215874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1caa19410604662a0e8a53344b35f5ecdbd7fcafe628582155ad5e8050d6b5f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/NLCK42215879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9799f6e466b9417f8a964f10a68484a0d42d31ab666c3694a35f7570c38b2002. 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/RUB521220438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8905992a4b15d56769c565048092dbb5eca9b3d601403b48256d547c175cec4d. 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/QZS652253824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf3c35bea337180fd52e7ba8a951d578bb92b557b28e32654098949ccf8437c. 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/QZS672213586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5c1bbf24b5e988cee7ff5ca19a2b16619e0f527d339a6fe5c84f5ea65ebe9b. 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/CLKT22103810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1f7645f39a36cb9bbff48208cdc2e98951f4a7fdb621d747410e66c80d1e3a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CLKT22103809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dc036470c47d2d9c4b61ae32174f0621d93655fe8f4f081c8d1121043e36f8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/NLCK41084270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea243d4983e27ae08c1385735b06becf397e85802495838e30fb7b0e88c0155. 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/NLCK42229709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b547dace366f8fe34139c3a429e33e2bc29bb013d7f45a9f066a04f30d0fc65. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CH6542256401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f26e5a9d5151f9fa5c10746fc442010f201e770be60a3f3f1723ef514df9b88. 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/CH6542256402.
Sky Signal to the Club - Valerio Innørta Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d326b141f69447ce0879d972d15110643e45421962682dbc86099909b7883f. 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/CH6542256404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ce99cb98983dcce3ac7cad676a3b4c9257fb2391c9123c9e91ed0959f65a65. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CA5KR2433220.