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 0x27a3a5805667094d6160a5423fe69ef5a73fdc75fc12b48671dd36809212267f. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3784083-f4de-4d78-bd9a-17ccd06913c8.json and https://artists.proofprofile.net/proofs/artist/e3784083-f4de-4d78-bd9a-17ccd06913c8.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 0x06383f7763db88072caf27db373544ceb24fdb10e97b87c64431814f1b5a5b1c. 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/US5UL0925179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07087ec3f6c416e502b19bd3e175435314e1936597dea0991baef9592973ba3a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US5UL1440250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443c3538e3c1358fce2281abf8e3fa02ca5aa240380ab55527f8a81edfb8280. 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/US5UL1401842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5993472d9a0018ec82f23b28965cb441ee795ad699454acf9325e5ecd6aaff. 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/US5UL1226769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fa04aefca855e7bd3bd1982114931b4a76f47a8091035aefc0189b6ef7219b. 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/USY2F0600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c816f4664982de4c63d880fd9374397011c28dfc2ab977ba0a52eec92338a9. 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/US5UL1038237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9766eb179f19dc2b6335a50e5375f00cc1b7875da877f65523a4c5de1e8b049. 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/US5UL0736173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99026724cbb685aa977dcdbd902ded8911fa94568b5c2aff37115176496e2b5. 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/US5UL0726551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda79a1006a4eb5f8f7387a30729c7996fa7a7c6e6795e11d193476c0c78ea894. 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/GBPS81513106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc8dd3fd852eaf5090bb1d5b44a8dc463d0b3b0a9f5049d6effd083df1c9048. 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/US5UL0694497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2d0d7e5bf4a23182295ffdfc957fa9ea06945553728ee233db1d249d7d55c8. 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/US5UL1248448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7474be0f0dedd747a5015fa41b82b6a151cf6ef8209f9da47998d34e141f788. 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/US5UL1237554.
Coole Musik zum Tanzen: Lieder zum Tanzen, die perfekte Partymusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dca9808a714f08810a5726ec071d44e574e686709e4c554af6af6277d99290b. 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/ITO102033501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1187673aaaef38afc1a6c8f51eb798175de6849ba092bd195c65f361bb9f9d. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ITO102033500.
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 0x4d32636a6a19659ddb9cc83f74f5279d710a9a95bf196110b640438b36fa4fc9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ITO102033503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd65c4c8bb9625f9ec6fc970c7f3e7cade96bfe30acb21d4cc0a2a07cd1f4996. 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/GBPS81513060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df5903f7929bf69a54272b7f19f9c8387e64ad825b0fb902b236ff63ef4c659. 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/US5UL1344510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00823452f148f481055567e5b678741e12f2629c1b1dcf5eb1297a0cfafe45f. 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/US5UL1103792.
Spanische Gitarre Für Romantische Nächte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6721ed67f06772be72e59f436af582844a50606bbd9c9b4c4fff1c05a9fe1b75. 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/US5UL0764030.
Tango: Tanzsport, Tanzmusik und Lateinamerikanischen Tanz