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 0xe9e29b2d0226275d427a07bce8c7b00f4b91e604122f82b7dfac1e746a97f671. 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/102674e1-6fa5-4573-b0be-ea3f514c1db1.json and https://artists.proofprofile.net/proofs/artist/102674e1-6fa5-4573-b0be-ea3f514c1db1.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 0x3752c443bbc50b93c937a30c8bf29a32ba992b8c852c7e0b633956e8598c9426. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SEAMA6362040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91be76f35c9fab276cd8003d05e10cda46f4c9c8a2f2e8d0290f3102b0b9a11. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/SEAMA6462060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808b323c4745fe537317a554f414ce4956c1045b841619efb6ebcca1e8819ea8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SEAMX5700677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73464ee280427cf0aec11adab39f6c537ce467049b2c97e238a650d1e57f962a. 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/SEAMA5872040.
Gröna, granna, sköna, sanna sommar - 2003 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4c1e0d9ec22a4fe4d9dd4b528d7fe9429827c75aa894ee2423b12129356b93. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/SEAMX6400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c2caab16c1d5adc93cea96da506c4eaed92e3f09aa84f964a24157dc607be2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEAMA5872070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcc64f7165e57b20cf67de382e7e2d8a0a1486a558f09fac96ff2246b4f7558. 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/SEAMA6672160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1f61621dc59cf8ca86b8ee3100c8f9d0c1150ac0f27eb7273410bfe9082bb1. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/SEAMA6272110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3340fe3b828d74d7d737845dbf309386e471b72d57221e18b776562a7f4040a. 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/SEAMA6772170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb8194d00f14c6e521a7c26b17a0851b0babed84bd168a60b98eef5c07d4908. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEAMA5972090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f95d99bb470d0c2e58f17ede93f9783dea0fecc4ad1538cb50ddb13f5d26d8. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/SEAMX6800392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3752c443bbc50b93c937a30c8bf29a32ba992b8c852c7e0b633956e8598c9426. 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/SEAMA6362040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcc64f7165e57b20cf67de382e7e2d8a0a1486a558f09fac96ff2246b4f7558. 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/SEAMA6672160.
Våra Mest Älskade Svensktoppar Volym 2, 1966-1967
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3340fe3b828d74d7d737845dbf309386e471b72d57221e18b776562a7f4040a. 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/SEAMA6772170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcc64f7165e57b20cf67de382e7e2d8a0a1486a558f09fac96ff2246b4f7558. 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/SEAMA6672160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf870f896a6f59acc3819decb9124caffbf35e616258d6fe48d848a224c521efd. 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/SEAMX6300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300d8487c98176c0369c4d154a7718ad510c77692ab0a493eec340a49f7e406c. 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/SEAMA6862100.
Jultoner från förr - Originalinspelningar från 30-, 40- och 50-talet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f29e567ac6e8a504d2e2d6dd95acfbd2200e28bf25e27fbc35548d719c77c0c. 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/HKI190615219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dcf3608e56b24f06e53e52ce50ab539beee33a43c5be98221d4bc9768f9ad0. 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/HKI190615220.
Festivalfavoriter (Utländska Hits På Svenska)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73464ee280427cf0aec11adab39f6c537ce467049b2c97e238a650d1e57f962a. 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/SEAMA5872040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435de71f370b947edecf742c1446c74075a55f8dd91ed8f7468e4522c0b2f17d. 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/SEAMX6200383.