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 0xe6fca5d7f0eb3e3ceea80408433570c666c09c8678c1a146fbbff42a95e49989. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e62531e-766c-47f0-91ec-deaa3b032efc.json and https://artists.proofprofile.net/proofs/artist/9e62531e-766c-47f0-91ec-deaa3b032efc.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 0x1ef8e9f50a4bd7387fd5c79c24ced8d004d437d6e3f760df85802e568c8d3a85. 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/SE3GO1300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fee909916f62cd0b0485822ffa8c30a36d49a9a0ad88bb32111d270aba1898. 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/SE3GO1300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5e7542a26e62367341fba525c8e6558a259804c5c99e4d4a5a59f7359d0845. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SE3GO1300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e50dcef7dc7a68ed38b253069e349dbf8031f6bbdbe19fea8d3bb062c6cf65. 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/SE3GO1300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f701c7d5267785ccdc26e48d1e70bce63337cd9e9b1ea2d807e63ad38f1b61b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/SE3GO1300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bf800573c51398d3803ebf67cf8dd0a7566ff7f3f2eaffe6cea3861f53b627. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SE3GO1300407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5b8e0afbfb722589fbfe615f682b320f88bdd44de8cb3c1f4b4cc7e0c9cb0c. 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/SE3GO1300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f4e4f2c91898d8248ff113420fdfd3564245f90ae96514d51bb7f383343921. 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/SE3GO1300409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71418bac53c89aec3d0253c459c91c9ac64bf7ac06172f68a9550673c5e3f3e2. 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/SE3GO1300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c60c12645777b49e31ba3bd3770302a67555940835fce9697f79006dbd1f59. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SEVUX1200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b7543ed45f6d8ff8761f26edb2ba26fc0d2ac77adbf24d144a783946efb173. 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/SEVUX1200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b30b67032e247a5f7fe271c488bb71252806afff996a1068e9bb0e0da101060. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/SEVUX1200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e9346f6a75a90fc4b6d63f14929306a0c8539369e1c8f755d7dca8493b8766. 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/SE3GO1501301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b7c030077b878b045dc74bdfb10d30a6503d20d67d684aef30164175a0848b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE3GO1400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f02a26f23c97a1cb8d72db421f633fae0dfcf9efc7acb8b2fbdfdf2e798ff. 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/SE3GO1501303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216218fce8b14c41f8c41ae9da17a23b8a3cfc70c880967368622684e99c6120. 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/SE3GO1400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631b83d637fabe85a570a97f0dec2129d2ded7102a8b1573947db2b0b3b660e. 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/SE3GO1501305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b486dfd1715278a055031e0711f6d51d1df6d7da96d1e9c46c81a5bbc7344e. 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/SE3GO1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dcad8e1193078354f28a55c05456cca757cf57fa6a132211b71a80750041a4. 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/SE3GO1501307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e229a88b0beaae3235877d32f709376a7d7804774014d858e52ab1f4d77664. 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/SE3GO1501308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded69bedbd45d0e938f24a5d715a2e541b8e5b3fdcabd47c93c4263c10cb6105. 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/SE3GO1501309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498fbe6052dab66d698a5fa8e0bc1591c769588d0f575c41dc9de576c55fde12. 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/SE3GO1501310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2c1eae22fcd2064618e112c202c458b3acec2bbd7dd11b72a90eb0f0c05349. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/SE3SA1700901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418f8714d4c9d905f420c367c6c6fc25a66fb889bf1a0dcd496160b782b81cdd. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/SE6XY2581446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5949bcec1ec5d1795698fe6ffad92cd8cefaf4773ba97b3bf59f31ab49f067f7. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/SE6XY2581447.
Hemmaplan (feat. Alpis, DaCosta & DC Grimsta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849edf566a5d54fb3309aa499fbdc59b3083903d69efd8840d902e119b6f0ee3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEYOK1301365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9aadc8ea82d889b7fbb34fa2cb201b0d4604970603808eda916a9d067659285. 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/SEVJH1400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d882daefbb9af85f5cef8319536a10dd21f405b118ff5ea8b0538bdcd5f56c7. 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/SEUM71600995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb677d0b1e84a4585cc084bae2938958ac70467b4d4d171bafc93f3b6c78b42b8. 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/SE5752386806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f60ea8976778670eaf9fc28a07bdee693f55816a614c817edccc87765822d5b. 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/SE5752386807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee5f43841e5124ddee76c812d1243a78b48e7b7f22f6192b21f186b70f274f3. 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/SE6I32264426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448493b2172a977c2326e5ffbb47ba7db7adeeb3bc7aefc8dd9db76bdbfcc7db. 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/SE6I32124140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3c85329f36368e90d1cfd39315caaf71a03ff0ec0cf257510114f80b547d42. 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/SE6HN2068378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e83e546661400ce05f607511c6dc537435183d1899985c8540fb3d7b72d584. 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/SE4YJ1900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c396a903c4825a64acb523deaf768041986b504d643557ef37a1ce8b9f5d891. 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/SE3GO1500302.