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 0x55dffa17048597b36ca0ead6ba15280907597874e2438b0df3592d12ebb695c5. 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/afde2704-c9df-44fd-a12c-2d5e616b455d.json and https://artists.proofprofile.net/proofs/artist/afde2704-c9df-44fd-a12c-2d5e616b455d.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 0xb50acfe115cf2c35fb789e0c1342b15879427146deb132d126a8756f7efd1f39. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEVGT1103704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf382360cf22d733f7319042264fd399d6734a29ff35bbff3e448bcfb951eb57e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SEVGT1103706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1093546badfb5eb0d61b5af6a5ec1c139de00fa3ffd8930ce627260ecab8a7d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEVGT0602404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a38c66be4b15d9543d60460c2e69380c2e268082796e85df030f380f391e3c. 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/SEVGT1301709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903aeebee165f4c2b83a200dcc075c1103e9d17d0d7b54f378dc2adf7bac2fd9. 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/SEVGT1004818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28808cf3bab8c08ab88ffeedfa3fdb6a2fac8b4c5c5ae42b5df714f68374b93. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEVGT0904712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a5cdba3ccd5a569893c7c021a7c22cf3a3e7352d1466230a96c5b6085a0d54. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEVGT0604411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3498baa36f89f7da3d0dd1eb231df428c36df850eb947e938bf247516a7ced9a. 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/SEVGT1301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a5291d3502e8b661f75e7b4afb12290d54d136b571dd5257d22e78039351e. 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/SEVGT1004812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af2d4808209b694cd9c9a255198bd6006be967b6ccb8a00e044bc272b338c48. 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/SEVGT1004805.
Barnplaneten - Älskade barnlåtar och populär barnmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a5291d3502e8b661f75e7b4afb12290d54d136b571dd5257d22e78039351e. 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/SEVGT1004812.
Barnens lek & danslåtar, Barnvisor - Barnlåtar - Barnsånger - Barnmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3498baa36f89f7da3d0dd1eb231df428c36df850eb947e938bf247516a7ced9a. 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/SEVGT1301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af2d4808209b694cd9c9a255198bd6006be967b6ccb8a00e044bc272b338c48. 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/SEVGT1004805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316cc63803c3ebda6eee0b94c1ee992ae8d6d6dd1d25f25f77f942e04db3b496. 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/SEVGT1104601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50acfe115cf2c35fb789e0c1342b15879427146deb132d126a8756f7efd1f39. 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/SEVGT1103704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28808cf3bab8c08ab88ffeedfa3fdb6a2fac8b4c5c5ae42b5df714f68374b93. 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/SEVGT0904712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648f71e947ac4e0e91ffdc326472457434d5d1f43e256d5ef890d9bfbe302f16. 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/SEVGT0904704.