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 0x553cc0811a8299fd180d640dcb34759dbd639f49027ccb4dcf2c9229445764fe. 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/a941a3f6-9290-4236-9d3d-6de0d5aa94d5.json and https://artists.proofprofile.net/proofs/artist/a941a3f6-9290-4236-9d3d-6de0d5aa94d5.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 0x72091e62ff52ade2a425ceda7343341f7c8122dd64afa67cda09a6fd34c31179. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/PTFA11201692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3e9a57fc73696fd92308bbb8ab92c5e7df7b27de9c50548000789e84ad2ee3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PTFA11201695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55115828b48f15cddbfdb5a13a8f99eb44815427ca34bfa4a26485945e035c22. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/PTFA11201696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6663b6f57a722b46856a0e06be8638d0a2733aa3dfaadfd77943398c5d9a896. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PTFA11402045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d5d9f838882cfa6a8f2fe19f1e43d9b2ea1702fec131ab0b5d5c5e77d2616f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PTFA11402051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cbe173ce645793c13509ad544e76f8ba9f0027c2703cb0aa0239333489967d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMDA61505681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb086f03388347f1a8429f0e1b99974f2d233cd86f7ede38a5abf989c6606843. 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/PT8DW1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5346de50de0d2ebeb3a2b9f1b8979deca9856982367bf6f63bf1144db3de6557. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/PT8DW1700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8b12faf38f6584337459fcc9f0b329f42d362e921d70436bd38c1c9175bf21. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/PT4HH1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81a9f7968ddffdced69eae5a1bb1a1c885f68af7646af1cb85ce2224bf22860. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/PT4HH1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5346de50de0d2ebeb3a2b9f1b8979deca9856982367bf6f63bf1144db3de6557. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PT8DW1700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9ab075a49fb416b629dfbff15b6972fcb119f73d813b295490bd483e3a008c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PT4HH1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dbd57d099b62f369dfde3412e38ddfff6139baa867879c9940ccee22b5573f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/PT4HH1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0976a1466f9179f3c947b9a80ceaad903ace239504cc795b490a22f6577237e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PT7IC2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98ac56fc4b1642a40bb98f299fdc5bdf95ace551e016d4514e3de84eea83546. 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/PT7IC2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b7a38f9ff279158a0afaa766734498f698931753a54aeb521366ebc8e51c64. 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/PTNO12400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17ff5b1d227a766dc3aedee7b2e4e2c09a0088a015a6dd6f9d425a784ee8b15. 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/PTNO12400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8322eef78c58d9adc1d12c83c02884f8aab0ef4c68af2478092238149f3a698. 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/PTNO12400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0976a1466f9179f3c947b9a80ceaad903ace239504cc795b490a22f6577237e7. 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/PT7IC2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8188c7544015133b0ac3c65ef15b93e590eae6426582dd52b0e64146837169fd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/PTNO12400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf027e61d1f7d2b41c80b22eed973062e51b8077dc5fc959df6702ec4b4053d4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/PTNO12400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b9a0a7996e72c91605e6f04c0a5756a726352b1f7c24eab5a84ba420cccd03. 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/PTNO12200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b95370bcece57ba979f4d50302043e23b87f29778797ec35a3da5f243d62456. 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/PTNO12400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbc3587ca72a9d50619ef57b4a1899b03aac53a28c6a082b51b51bf1b76e517. 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/PTNO12400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb579d153d908ed715122f89440d260a919442d51fe2e2bcaba291d873a2b22ce. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/PTNO12400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41757aaf532b6d06543cd45eb4fe9124724c86a88b4da315a744cef518e8f40. 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/PTNO12400051.
Love is on My Side - Eurovision 2021 - Portugal / Karaoke Version
Eurovision Song Contest Rotterdam 2021 (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4f092aa864ab84f4c2ecf61e1e0cf98a559c28bde53aae92c715ee1e51151a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/PT7IC2100014.