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 0xfea8cd4cd18f47c8a06fbec9bddb2b1230d7f974907988c078b408301c2d1957. 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/7422f2fb-311f-4bc1-baff-721888737e26.json and https://artists.proofprofile.net/proofs/artist/7422f2fb-311f-4bc1-baff-721888737e26.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 0xd39d458d6259b841d92770df692b7d6d5e8a5e3df45f631d67c6107d9b8f9eb4. 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/TCACQ1657435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb65c6df78b10b1004acd089a5b74628e398f8fa1176b2514c93f284927401b7. 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/TCACQ1657436.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0255beeffc47c811cc44156ece60ff04998c29e45b05e171845f22f7f06301e5. 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/TCACQ1657439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0dbe9c28568fca808a7c24d13571755f43dd549e246a7fe616ea2c53e34f0a. 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/TCACQ1657440.
Champions of Rock (Live in Concert Vida Arena / Växjö)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4caa144985662153d06acabfc1e47e2c5ec111a0003737b79c291ad810b646. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE2VN2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fc9abe2ce21579a26d095cf1d51f61c02afa90ec2a6bfa660083f9d6c8d9b8. 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/SE2VN2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e02d04ca26c7fed8492f996f2116b76709c0b04407100d466fe86acc05bd715. 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/SE2VN2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9591c45dc4c86bfd8f82a2395b58bc0ee4c5722c12ddaefb226def326a0f07ec. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/SE2VN2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c6ea4c84b0a9379261d67a1595cf5fd36005b0b1a19b1f72caf0bb44c10067. 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/SE2VN2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe124280d20dc2d9b009767d8099f6f4c3618627e0d744ccd6d3e4ae26dc05d3a. 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/SE2VN2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe89b27e376fd45028db3bcd99f5b7ea3187cf7a5990d6edfb7d7886c1d4c27. 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/SE2VN2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d378b0f9823ae5b5ed49f47f5ed7c0e27e72c3e7c33e6b718c38cb5cf5a697. 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/SE2VN2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffd21504fb71c85bd0be4e31382e2ae9371fff76a2441e7a5e6420bfff56f5a. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/SE2VN2000001.
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 0x37a865ae373adcf7762a376f22ac33169557b5bdb570dd8447f7a28cc13eb22b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SE2VN2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49b362faf87796d7edce763d55b2e31583e9dec4afc6e9bb78844222586c2e2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/SE2VN2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cc0257264da6c54848520dad20247948d4ce29aa68cd25d76c8a20e76f4ee4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SE2VN2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2167fe1d286ec22133b2fcb71b681859be9e8c7944c38b2d23a253cf3e1cbdcf. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/SE2VN2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6752eea5a93098ebfee058108cd30f0d3537b57f9ab1b2ef39275c05c1ae0b5d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/SE2VN2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b3848a73b9b0d3643a2888209fe2a8e3f925a45e6fa7460e713652ca68ddb2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SE2VN2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bb92d3ddf7e602e662b5c1c79a390cc705913de9a51b578d96aff057c5c07d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SE2VN2000016.