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 0x6fda23f51b8a179926f8ef35b05b6e544661917e01126bc673561a5210a573a4. 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/4913fc15-4986-4b62-a893-16654cdce3b9.json and https://artists.proofprofile.net/proofs/artist/4913fc15-4986-4b62-a893-16654cdce3b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nitar o Läder - EPA Remix - Dansbandsrave
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 0xaa46c71e3f79d30ad215c59b302f4fe035f7d9e16f6c747ed9cbfb3c774947a4. 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/SEVSZ2200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21adc07098ff11b26818c287daa2cb344234538719c7958cfe30b16f0b186491. 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/SEVSZ2400805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d71b3e645719292ee9adef3dd162a1c76822a1e0871294f285fa2b50bdea3. 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/SEVSZ2304101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb9799b11d531f88bede42be179c59d1559b66e8302970d7812ade92224170c. 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/SEVSZ2303201.
Var ska vi sova inatt - EPA Remix - Dansbandsrave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b86b4f51d83ada278ed424f7f017367d6f9409d70cc3665976a0fe55ded800. 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/SEVSZ2200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa46c71e3f79d30ad215c59b302f4fe035f7d9e16f6c747ed9cbfb3c774947a4. 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/SEVSZ2200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d9315d4ef558f903fe8d896ad8acdd6a12dad1404b808b4c95ce4f148e6a6e. 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/SEVSZ1903502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65703ed80da69abe0f726c6ac393acec8a8717734fceda6c178d7242d85edec. 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/SEVSZ1901803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dccf28d7ebfd0be197a2bac9db3f8138997608c9b366eacfc1a30107107e08f. 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/SEVSZ1500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4adfed31d509b18878fb4910b347058ab7e59647aedefcfdd71a6b288b45a2. 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/SEVSZ1500703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7dbbd5501ab9b8b716259db05d53d85039fe87b1d6af64c2bae9a4a99354b9. 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/SEVSZ1500704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6924a760a0e858f3e7b97e1a99518ba6f13ea1e7b859e4fd67731d6acb45761. 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/SEVSZ1402201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaa05454c7a240d031f3300c3f4c57092218bf14a9540218c8638a79ee47a96. 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/SEVSZ1402204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e26e3910dace05990b5bb8c30d1d7a22e72cf9289af60654f78477606e29663. 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/SEVSZ1300901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eef9a273b785b5831fcf66fd4e7354ca4e41f606d720f53002a314bb9ce2d1. 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/SEVSZ1300902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1efc566de2c0ba5684ce99273cae73966e26585334a5003de554e784fea534. 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/SEVSZ1300907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f758fa5f7d42f43057927cc84edc787e2df20f8ec8e38f516cc0fd6f39c6604. 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/SEVEO1200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae776c06e3028232a6cfc3be4b6f8b63b1bf8b00e5a12e4f827a28f3b6c6b790. 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/SEVEO1200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792a78bfd8063f1da4098757c384e3eb35afc33129c0e3a827a49185cb0caecf. 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/SEPQM0612761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7d96acff29077e277258e0f002f205907ca9cb4778755076255baee704dbcc. 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/SEPQM0612762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ab94b14019f34030db97ac0f493785d172cb81ef9395db657fd80778cf1e97. 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/SEPQM0612772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deb6d5f2152ddc3174231726e06a3b6efa9014cbe5778f05de9f5a03ac33cbd. 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/SEPQM0612773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f472081803596c24d1f5f865963b35efa0216f4b4085634cba208a8e849c7b8. 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/SEPEL1001005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36738502ad52b8b40913252045f795a51078522f06decc1e347c93a7f83313c9. 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/SEPEL1001001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a1905fd44448ff4cb5f2b64dfd1d29dcb3618214d53da1a58a47e1a128516. 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/SEAMA8246010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d71b3e645719292ee9adef3dd162a1c76822a1e0871294f285fa2b50bdea3. 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/SEVSZ2304101.
Var ska vi sova inatt - EPA Remix (Dansbandsrave)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b86b4f51d83ada278ed424f7f017367d6f9409d70cc3665976a0fe55ded800. 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/SEVSZ2200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d9315d4ef558f903fe8d896ad8acdd6a12dad1404b808b4c95ce4f148e6a6e. 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/SEVSZ1903502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a1905fd44448ff4cb5f2b64dfd1d29dcb3618214d53da1a58a47e1a128516. 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/SEAMA8246010.