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 0x9dd64b8558f8842d688ec0aa937283e64f24d81bd418b73459c9ec4f87aad7a5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e4c2ae1-bf2f-4683-9989-d8ef664656d1.json and https://artists.proofprofile.net/proofs/artist/8e4c2ae1-bf2f-4683-9989-d8ef664656d1.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 0xb23299e6b3efc4f5f91990b14bdb9e49dcba8070c6806242f4f58ce732ce2e15. 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/DEGC61902187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95f6f7c1fed5cb7637406c42e6877aa23948f21ca949a50b2ced3cc98b74e14. 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/DEGC61902188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01da345adddaa619e29c59c8283c32248d314d96ee3ace28b00857b7f09c819. 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/DEGC61902189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b5573fa713a61806c66d4c5e069733d6a42a341915c003599ae1cbe7ef905b. 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/DEGC61902190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef9c9595f9140b015a30d5a0870d5eae75fc1202edec9aee2fcce00b72e7e4e. 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/DEGC61902191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30415c7b99d5715dedd14b06caa4b79f9b97cc331572cb6027b15c1be3a2cbfe. 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/DEGC61902193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6621d292db97bf75dc7fe3eae08dbd19bc29a2fd291e548d50b88843d00a20ad. 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/DEGC61902194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0d9e23ca9daa80c14d5f6b21fd5b11bf916fe7babfc98d17822e3191c1810d. 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/DEGC61902195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5107bcce0cec78063f8bf03f3e8ec09b3bbc4e4aed19b61e3beeb471e38f49. 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/DEGC61902196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba98fd66949be3760f5d5c20e14de7bc0518e68f004217d877a0d482cb79aaed. 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/DEGC61902197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b4c3e2197b120644ece8a343566d6d879c366f395b93b70cf2ec8df4c2887a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEGC62302910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b12976a2234f592385c2a6661501af80c1854828c99a288aefb0d9e1c1bcf99. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:40Z), 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/DEGC62302915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e027248754450f5224cdac3ddce00309c5297affaeb56d745b435b46931d89. 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/DEQ022383663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b8323103680fdfce8e827fe24907bb594f551aef8113d567ed361f45455e86. 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/DEQ022390377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b9d752e32447c8b09276027399b37a98899b65d93d45224da9271e54d66040. 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/DEQ022390376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b8323103680fdfce8e827fe24907bb594f551aef8113d567ed361f45455e86. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEQ022390377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b9d752e32447c8b09276027399b37a98899b65d93d45224da9271e54d66040. 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/DEQ022390376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd7b61193150cdf4244e521b0ce38baba38bfa4a3819aed8f03edc42b7094e0. 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/NL1AP1917861.
10 Years of Rhythm Section International
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d47c414e087ae2022a4db181f208bdb78425ead94ba2df39dd13ef66d6a3aa. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEG932404253.
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