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 0xe9c049630e5b8e600d1f9c3177415f17f96b9321ebb8a9df964ea1301945dd86. 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/7918be52-6ab9-4283-8606-209966134f62.json and https://artists.proofprofile.net/proofs/artist/7918be52-6ab9-4283-8606-209966134f62.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 0x2fc21111a8ba94020f13666f9ea08f40688aaceb98fb7bbe17c6d0f3e4ae32d8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:33Z), 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/SE4X22300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff53c025b7bbb0dc3c69dde76a6c2f739977c75bb0ceae83ce90f21ff78ad2ad. 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/SEUHA2300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcd2e7af629c0e176866b1c8c4130c885736259777e5de017e7d6194feca54f. 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/SEUHA2300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e65fe9c6fd9930e7bc05b3d70c2c1c05f6651591ce4a8163ea3b5dfaa6f0dd. 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/SEUHA2300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883ada3b1534cf00a83669367a63673fb17406cb825b1ea5f13351e1b0c95707. 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/SEUHA2300708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e62d80a6edc5ed527a3bc246a7b68264ae00b2379e62a706646eb602769f03. 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/SEUHA2300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac26915eedf32690686a6562593fb79943287e2430fdf0e9086b90c66a70814. 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/SEUHA2300710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1a6656c6e58e5451e6ce303ce0c34452140fb5ebb2870f9b50792d6f014468. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEUHA2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ca65372da086dfb5010f5ee4de4627b3ba6526627265d96b11b73412812f2e. 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/SEUHA2000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf19e2535a49d1c1f427096f239613a7c51b3e858d56d657554ee5a004bedac6. 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/SEUHA2000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3496a40c6c372f24eece447d1ff4b3d188242cb56c07089142861640b0392c. 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/SEUHA2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766e60d42987e0ad26b18d34dd271c6f1a6578afa6cda6aee637b4137734b40b. 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/SEUHA2000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebc0b8b295c890e3260bdbf95645a7569a2203408e63f3d2ab0f054a1493e81. 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/SEUHA2000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865602e96af2456ad03ce555567180573f8d0601f050ae09ed47795089e97b43. 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/SEUHA2000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda35d2ef1371336b80637e86d1a21c07d4426cffb4bf1cb727ca3f1cdf485949. 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/SEUHA2000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28de649facf3e337fa246b306e2ae499415ecb7d889e6239f031661f0db6b548. 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/SEUHA1701001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f524cee88799dfb96c049a3b44f28c593ab6250418fc2793b0f682b4532207d. 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/SEUHA1701002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a53215c5ab3e3bee1c1dff77dbce4964c390187d8b2c4e3f5a40d7c6b36f5a. 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/SEUHA1701004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60dd37b2e1c20bb0b2f4acf2c3366dd887cd29443972e02823ccc990e2d72f0. 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/SEUHA1701009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e30bd312bf3f383085fc7eeef20669611ac961136bc30e7e858c81f85a149da. 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/SEUHA1500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3a072d3ce7b5743774978a6b47b8004f0deba124b847104b4ae6baa0f0b319. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEUHA1500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daa33eb8f4c85edcc61aaa4af20bd2371aa631e027e4329316f654a52970ec7. 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/SEUHA1500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb7e3306f1b95d34457bc755900c755b3f7bd921e56846c476da4097fa139b6. 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/SEUHA1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb95613c31a6fb7679383cd30b58d7a1842f9edc7f94bb2d53a5531df0ccc11. 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/SEUHA1500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66070ac991045c693d2457030f6eb9697b96947b5e5b04ddf407c031a284305. 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/SEUHA1500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3065a4c4729d5a92b567e993600bce9bcf94c722fa40f3bd212a1798bad5adef. 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/SEUHA1500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b9a5b0ebf8bc0db87bbfbf55ee7d4bd8ed23b6f0faf439e060790b0c336fa. 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/SEUHA1500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a356395cbaa0fa96bda3e53a9ecc7491003bbc5f5a86ea5dab8566a96ab6aef. 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/SEUHA1500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295127a28f613b414dad48e0fb5574d846710c8c2c87130d2b7f599ee4e1f0b5. 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/SEUHA1500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9bad2963a210c904d464cef9b4f91cdd49cb1b8a2a8dc653863270d2b56443. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/SEUHA1500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556daa745ac212316560ad7723a2c725081072ce867d3afd32e5ce37a3d618ce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE43Y2200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1a6656c6e58e5451e6ce303ce0c34452140fb5ebb2870f9b50792d6f014468. 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/SEUHA2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd23b67c28bcbc5ec1274107b3abb61d55f15604c856c80ab25fcf415f9d7ec. 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/SEUHA1801001.
Laura Jenna Ellinoora Alexandra Camilla Jurvanen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bc5a8cf3e111e2fde523e5e6e8a05e461b609f3ba21ed8c82e2d75c5a7b0f2. 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/SEUHA1801002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36646a4c390e0d240b339bf4e1498f747f788c467407c11a2c4a393aaec86e5. 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/SEUHA1601101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd701d356389754e6e0e5ba48b0697ab96a7d0ac56c831a126b6b952dfda75e19. 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/SE43Y2101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb30c9402760d57030bccbfcce79a0f357d82ae8c3c05f0bfbec098c77055f16. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE43Y2101302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3faf6193a0e62f8903956220e31860532f51a67266ceebca4cfdf56de3f6ca. 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/SE43Y2101303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35bcb24a25e826af45ed8cba2c041e369cadb57a8a8d9e808e0133da9433d9f. 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/SE43Y2101305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162deaf1b5b9243d0420b3b13da462562239d025268ae81f1b8a2886aa812f64. 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/SE43Y2101309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaed1199ddc4923373675895b489ee9353457e5ec408270fe9fa202ae75bc83. 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/SE43Y2101310.