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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cf76380c4042d0557257c51e3f4b72c2034489247c2a396f9284070aa0ac12. 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/CA5KR2405204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9530e2ddbece5afb60da9eb1b9f1ce3b2f613e37ef61080519a2f8909f7e41. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 0xae2ddd92ff50ec6b00fbdee673c14544c8767aeddf8bdb6eff7c81e545bf4fd4. 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/CA5KR2304352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5872246cacf2a0f5337de0438d3545c55ff3bfb39c911fc7ae1397f6b935380b. 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/CA5KR2304366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dca9e14bea32868e7f469f694daa97f396193140fb89b13b4ce366eb19bc0f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 953528 (2026-06-13T15:41:10Z), 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 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 0x176346507c1d918f906831342ad0e197ab9612eecaf97e208dee0e9ef7b0123d. 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/DEH742230778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730353c1c59977e3318a9d04f6ab0108b81c519d2df82afc2810ec78b1610dd1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEH742230779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50826df92057d9c856d32d4a4f57ec97a8c8383b272520fcbbc48c6d27b76b45. 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/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 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.
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 0x4b144ba5b44b8b619c7d523e3cd84edf2cf0cfb28300b5fcbe719f5e09538295. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CA5KR2320882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3528310b9a8915a50cbe65894d782c3f6807dc130219c43708deff3990bbf51d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2320886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4941047ddc46bbc0e94858f26e41338260834d87d9ad05897a7ca362f0505e3d. 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/NLCK42215874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9799f6e466b9417f8a964f10a68484a0d42d31ab666c3694a35f7570c38b2002. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/RUB521220438.
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 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 0x8f26e5a9d5151f9fa5c10746fc442010f201e770be60a3f3f1723ef514df9b88. 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/CH6542256402.
Sky Signal to the Club - Valerio Innørta Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d326b141f69447ce0879d972d15110643e45421962682dbc86099909b7883f. 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/CH6542256404.